In the hope of each production stage becoming
a vessel for realizing a recycle-oriented society.
At Chiyoda Ute, more than 50% of our current production activity takes place with recycled material.
We aim for zero plant emissions through recycling, using byproduct gypsum for the core, recycled paper for the paper facing,
and wood chips produced from recycled wood from demolished houses as fuel for use during the manufacturing process. We
also work on the recycling of waste gypsum boards. We promote recycling in all aspects of gypsum board production as well as
at building construction and demolition sites. We also take pride in contributing to the protection of forests by replacing woodconstruction material with gypsum boards. In this day and age, where a recycle-oriented society is absolutely necessary toconserve global resources, the social responsibility of gypsum board manufacturing businesses is to establish a recycling
system for the various stages of production, thereby contributing to environmental protection. We will continue to exert oureﬀorts in protecting the global environment.

Construction Sites

Recycled Paper Facing

We promote recycling of waste gypsum boards by collecting
scrap gypsum board from construction sites andregenerating new boards from the scrap.
In 1997, Chiyoda Ute wasdesignated as a Wide-range
Area Recycling Industrial
Waste Disposal Firm, the 6th
to be designated in Japan,
by the Minister of Health,Labour and Welfare.

The base paper for the board is almost 100%from recycled paper such as newspapers, thishelps to protect forests.

Recycled
Paper

Collection and Reutilizationof Scrap Gypsum board
Chiyoda Ute Plants
Zero-Emission Plants

Demolition Sites
Scrap wood chips areused as fuel in our plants.
We actively work on setting
up a system for the entire
industry to effectively
collect and reuse wood
generated fromthe demolition ofold houses.

All our plants are zero-emission
oriented with an aim to reduce
waste through using byproductgypsum and recycled paper as
raw material and scrap woodchips as fuel for the production
process.

Synthetic
GypsumGypsum board

Preserve Forests by Substituting
Wood Construction Material
Gypsum boards have been used in Japan for the past 80
years or so, replacing wood in home construction toprevent deforestation.

Utilization of Byproduct Gypsum
Synthetic gypsum, a byproduct generated
from thermal power plants and fertilizer
mills, is used as the gypsum board core.

Eﬀective Reutilization of Gypsum Board
Reutilization Work Items

1. Recycling Plants

Work Items

Company in Charge

Exchange of agreements

Construction companies (emitting company) - Chiyoda Ute (recycling ﬁrm)
Housing production companies (emitting company) - Chiyoda Ute (recycling ﬁrm)

Muroran Plant
389-12Sakimori-cyo,Muroran City, Hokkaido
TEL 0143-59-1100

Exchange of MOU

Construction companies - Contractors - Chiyoda Ute
Housing production companies - Chiyoda Ute(up to 4 companies may be involved, including collection and transport contractors
per each construction site)

Chiba Plant
12 Kitasode, Sodegaura City, Chiba
Phone +81-438-63-2511

Gypsum board delivery

Chiyoda Ute

Installation

Construction companies - Contractors
Housing production companies - Contractors

Yokkaichi Plant
928 Takamatsu, Kawagoe-cho, Mie-gun, Mie
Phone +81-59-363-5563

Separation and collectionof scrap gypsum board

Construction companies - Contractors
Housing production companies - Contractors(prevention of extraneous material mixing and water leakage)

Transport of scrap
gypsum board

Industrial waste collection and transport contractors
Designated carriers (chiyoda Ute) (advance notice/ issuance of manifest)

Receiving scrap gypsum
board

Chiyoda Ute(carry-in hours: 9:00~12:00, 13:00~16:00 weekdays)

Reutilization

Chiyoda Ute(reuse of gypsum / paper treatment / request for treatment cost)

Kaizuka Plant
16-1 Minato, Kaizuka City, Osaka
Phone +81-72-431-5211
Okayama Plant
6-9-1 Tai, Tamano City, Okayama
Phone +81-863-32-3551
Shimonoseki Plant
7-1-1 Hikoshima-sakomachi, Shimonoseki
City, Yamaguchi
Phone +81-83-267-6464

2. Recyclable Items
Gypsum board products manufactured by
Chiyoda Ute

Waste Gypsum Board Treatment Flow Chart There are two ways to treat waste materials.

General contractors /Housing builders

Collection-transport
contractor

Freight
payment

Freight
agreement

Transport fee / Disposal fee

Transport and disposal agreementsCollection-transport
contractor

3. Unrecyclable Items

Construction site

Chiyoda Ute Plants
Scrap
gypsumboard
Collection-transport
contractor
Chiyoda Ute

Chiyoda Ute

General contractors /Housing builders
Transport
fee /Disposalfee

4. Items Containing Extraneous
MatterChiyoda Ute Warehouse

Intermediate
waste
management
contractor

Scrap gypsum board fromconstruction site

Transport
anddisposal
agreementsCollectiontransport
contractor

Crushing

Intermediate waste
management contractor
DisposalfeeTransport
anddisposal
agreementsCollection-transport
contractor

Collection-transport
contractor

Chiyoda Ute

Chiyoda Ute

Chiyoda Ute Plants• Scrap gypsum board containing extraneous matter(Other substrates, metal, cement, rock, sand, soil,
wood, paper, cloth, wrapping material, rubber, vinyl,
plastic, trash, and other matters with particular
caution required for plateshaped construction
material.)• Items containing metal such as screws, staples,and nails• Items with bonding material attached• Items with wood, plastic, and vinyl attached• Composite gypsum boards (damping board, styro,urethane, lead, and etc.)• Items with water stains and oil spots• Decorated gypsum boards with cross-pieces (HIT
Ceiling, ESTEN)• Gypsum board products by other manufacturer

Chiyoda Ute Warehouse• As a rule, we will not accept such items.
• If we ﬁnd that items brought to us contain extraneous
matter, we will contact you.

CONTENTS
HighPerformance
Products

GeneralWalls・
Celings

4

Xenna G Board (hard-type)

5

Sawayaka Gypsum Board・Sawayaka Closet Board (humidity control)

6

FC Board (formaldehyde adsorption and decomposition)・
Sawayaka FC Board (humidity + formaldehyde and decomposition)

7

Tea Life (tea leafs, deodorant antibacterial）

8

DampingφBoard (sound insulation)

9

Gypsum Board
Reinforced Gypsum Board Type X / Type V

10

Water-Resistant Board・Non-combustible Water-Resistant
Structural Gypsum Board Type B

11Sound-Absorbing Board
Ace Board・Non-combustible Gypstar・Non-combustible Cosmo Tone

12

Airtight Board
Gypsum Lath Board
Super Board

13

Decorated Gypsum Board
Gypstar・Cosmo Tone
Closet Board
Pearl
Estane・HIT Ceiling

15

Glass Wool

RelatedProducts

Construction
Materials

DATA

Calcium Silicate
Damping Sheet
Ceiling Inspection Opening

16

Kita - no - Yasuragi-Smile（humidity control stucco）

17

Refreshing Health Grain (under floor humidity control)

18

Sukima - Naito・FR Felt・Urethane Seal・Acrylic Seal・G Cork

19

CA Bond, MK2, SD Bond, Joint Compound

20

Joint Tape, Corner Beat, H Joiner, Curing Sheet, Curing Tape21

JIS (Japan Industrial Standard) for Gypsum Board

22

Test method overview of various physical properties

23

Types of fire protection materials

24

List for restrictions on interior

25

Manufacturing process of gypsum board products

High Function Products

Unique TEchnology

Xenna G Board (hard-type)Gypsum board with higher level of ﬁre resistance and soundprooﬁng. Its
strength and high density make suitable walls for schools and hospitals ,where higher strength is required. Use of this gypsum board on the ﬂoor ofresidential housing will reduce the noise transmission to the ﬂoor below.

High
Strength

Sound
Insulation

Fire
Protection

1.3 times the bending andbreaking load compared toconventional products・

High sound insulation

Non-combustible

by high density

materials certiﬁed for
9.5mm thickness

Flexural Youngʼs Modulus of
2〜4 times

for wooden frame
residential housing

Examples for the use of Xenna G Board

Xenna G Board SOUNDPROOFING FLOOR♦Type C (Hanging ceiling)● Combination of Xenna G Board and damping sheet
delivers outstanding soundproof performance.
● Added ﬂoor material and the improved ceiling

Flooring material thickness 12mm

board installation method have improved the soundDamping sheet thickness 8mm

environment by 2 levels.

Xenna G Board● Use of Xenna G Board provides quasi-ﬁreprooﬁng

thickness 12.5mm

Structural plywood thickness 12mm

for 1 hour for the ﬂoor area (15 minutes longer thanGlass wool 24K 50mm

the usual 45 minutes). The double application of
gypsumboard

Gypsum board thickness 9.5mm × 2-pieces

enables meeting the ordinanceFloor joist

requiring quasi-ﬁreprooﬁng properties as well as

Beamother quasi-ﬁreprooﬁng requirement (15 minutes

Ceiling hanger

longer than the usual 45 minutes) for the ceiling.

Ceiling joist brace
Ceiling joist● With the use of dry method that attaches thematerial to the underlying plywood, installation andmaintenance is very simple.
Heavy weight ﬂoor impact sound level
Light weight ﬂoor impact sound level
Floor vibration level● The major components of the soundproof ﬂoor
structure are gypsum board and damping sheet .

Performance (improvement)
LH-61（7dB）
LL-62 (7dB)
43% reduction

JIS A 6901 Standard
Category
JIS product name
Code
Thickness
Water
Bending Breaking

Xenna G Board
Regular Hard-type Gypsum Board
GB−R−Hmm%
Length direction
Width direction

When a 500g steel ball is dropped from a height of 500mm,
the board placed on sand shall not form an indentation larger
than 20mm and the crack formed shall not pierce through.

Impact resistanceHeat resistance

12.5
3 or under
700 or over
250 or over

9.5
3 or under
500 or over
200 or overm2·K/W

When a 500g steel ball is dropped from a height of 650mm,
the board placed on sand shall not form an indentation larger
than 20mm and the crack formed shall not pierce through.

0.026 or over0.035 or overNon-combustible material
NM-11391.15±0.15

Non-combustible material
NM-11391.15±0.15

4000〜6000
300〜400

4000〜6000
400〜500

Type, Certiﬁcation Code, and Bulk Density of Fireproof MaterialType of ﬁreproof material
Certiﬁcation code
Bulk density

g/c㎥

Other Properties (reference value based on our data)
Youngʼs Modulus in bending
N/mm2
Wood screw retention strengthN

4High Function Products U n i q u e T E c h n o l o g y

SAWAYAKA Gypsum Board

SAWAYAKA
Gypsum(humidity control)

Wakkanai diatomite mixed into the base material creates a strong humidity
control eﬀect on a semi-permanent basis. The board absorbs anddischarges moisture and helps keep the room at a pleasant level of humidity.
Humidity Control Mechanism of Diatom Earth
Diatom earth is a sedimentary rock found in the geologicalstratum where ocean plankton (diatom) was deposited andhas fossilized. Wakkanai diatomaceous earth, in particular,
has many ﬁne pores for outstanding humidity control
performance. These pores absorb and discharge moisture
to help control the humidity level of the house.

Microscopic
photograph

Wakkanai
Diatomaceous Earth

Excellent Moisture Performance Suppresses Growth of Mold and Mites

Excellent Humidity Control

Before humidiﬁcation

A study was conducted in House A, in which
SAWAYAKA Gypsum Board was used, and House

B

A

B, where standard gypsum board was used, to examine
the changes in moisture levels under normal day to day
100

living conditions. The graph shows that the level ofRange of mold multip lication

humidity in House A is lower .

90
Humidity (%RH)

After humidiﬁcation
A

B

80
70

80

40
30

40

60
50

70
60
Humidity adjustment range of

10

20
30
Temperature (°C)

SAWAYAKA
ClosetSuitable for use in closets and closed oﬀ
spaces where moisture tends to build up.
The board helps control the humidity andprevents the spread of mold and ticks.

調 湿 建 材（社）日本建材・住宅設備産業協会

T09−0019

20

40

Sawayaka Closet
Board has beenregistered by Japan
Building Materials
and Housing
Equipment Industry
Association as a“humidity control
building material”.

50

S-8 Paulownia

10

10

0

0
July, 30
July, 26
July, 24
July, 22
July, 20
July, 18
July, 16
July, 14
July, 12
July, 10
July, 8July, 6
July, 4
July, 2
June, 30
June, 28
June, 26
June, 24
June, 22
June, 20
June, 18
June, 16
June, 14
June, 12June, 10
June, 8June, 7
June, 6
June, 4
June, 2
May, 31
May, 29
May, 27
May, 25
May, 23
May, 21
May, 19
May, 17
May, 15
May, 13
May, 11
May, 9May, 70

A.SAWAYAKA Gypsum Board B.Standard Gypsum Board

30

20

SAWAYAKA Gypsum Board

50
40

House A using SAWAYAKA Gypsum Board
House B using standard Gypsum Board
Temperature °C

Temperature °C

A.SAWAYAKA Gypsum Board B.Standard Gypsum Board

S-2 Robofuro

S-3 Andora

SAWAYAKA FC Board (damping control + formaldehyde adsorption-decomposition) also available (see next page).

JIS A 6901 Standard
Category
JIS product name
Code
Thickness
Humidity controlling property
Other standard values

mm
g/m2

SAWAYAKA Gypsum Board

SAWAYAKA Closet Board

Humidity controlling Gypsum Board
GB−R−Hc

Humidity controlling Gypsum Board
GB−D−Hc

9.5
12.5
150 or over
150 or overPursuant to GB-R (see P9)

9.5
12.5
150 or over
150 or overPursuant to GB-D (see P13)

Type, Certiﬁcation Code, and Bulk Density of Fireproof MaterialType of ﬁreproof material
Certiﬁcation code
Bulk density

g/c㎥

Quasi-noncombustible material
QM-90710.80±0.05

Non-combustible material
NM-94170.80±0.05

Quasi-noncombustible material
QM-90860.80±0.05

Non-combustible material
NM-9455
0.80±0.05

2〜5
200〜500
0.02 or under
0.04 or under
2000〜4000

2〜5
200〜500
0.02 or under
0.04 or under
2000〜4000

2〜5
200〜500
0.02 or under
0.04 or under
2000〜4000

Other Properties (reference value based on our data)
N/mm2
N
Length direction
Humidiﬁed deﬂection %Width direction
Youngʼs Modulus in bending
N/mm2
Compressive strength
Nail holding strength

2〜5
200〜500
0.02 or under
0.04 or under
2000〜4000

5

FC Board (formaldehyde adsorption-decomposition)
Board
Adsorbs and decomposes formaldehyde, one of the causes of sickbuilding syndrome.
Mechanism of Adsorption and Decomposition of Formaldehyde
Adsorption

decomposes formaldehyde,
detoxiﬁes it, andFormaldehyde
ﬂoating in the room

prevents re-emission.

Decomposition

Adsorption anddecomposition
through chemicalbonding prevent
re-emission.

An adsorbent traps andAldehyde
adsorbent

Quickly Adsorbs and Decomposes Formaldehyde

Excellent Formaldehyde Adsorption Effect<exceeds the 0.08ppm guideline value set by the Ministry of Health, Labour and Welfare>

Formaldehyde concentration was measured before FC Board installation (withThe formaldehyde adsorption capacity of FC Board and SAWAYAKA FC Board were

only framing) and after FC Board and wall paper were placed. The graph shows

measured in simulations using miniature models. The graph shows the attenuationthat concentration was reduced in each room with the installation of FC Board.

of formaldehyde. Please note, however, that this data was obtained from a miniaturemodel and is not a guaranteed value.
1.6

0.106

Before installation

0.10

Standard gypsum board
1.4

0.08
0.06

0.062
0.054

0.056

FC Board /SAWAYAKA FC Board

0.091

After installing board
and wall paper
0.062

0.056

0.046

0.04
0.02

Productwith 9.5mm
thickness

1.2

Formaldehyde (ppm)

Formaldehyde concentration (ppm)

0.12

1.0
0.8
0.6

Guideline value set
by the Ministry of Health,Labour and Welfare 0.08ppm

0.4
0.2

0.00
1F living room
Southeast

1F western-style room
Northwest

2F living room
Southeast0

2F western-style room
Southeast Northwest

0

6

24

48

72

96

Time elapsed (hours)

SAWAYAKA

Board

Gypsum board with both humidity control andformaldehyde adsorption-decomposition
functions.

JIS A 6901 Standard
Category
JIS product name
Code
Thickness
Humidity controlling property
Other standard values

mm
g/m2

FC Board

SAWAYAKA FC Board

Gypsum Board
GB−R

Humidity controlling Gypsum Board
GB−R−Hc

9.5
―

12.5
―

9.5
150 or overNon-combustible material
NM-86190.65 or overQuasi-noncombustible material
QM-90710.80±0.05

2〜5
200〜500
0.02 or under
0.04 or under
2000〜4000

2〜5
200〜500
0.02 or under
0.04 or under
2000〜4000

Pursuant to GB-R (see P9)

12.5
150 or overPursuant to GB-R (see P9)Type, Certiﬁcation Code, and Bulk Density of Fireproof MaterialType of ﬁreproof material
Certiﬁcation code
Bulk density

g/c㎥

Quasi-noncombustible material
QM-98280.65 or overNon-combustible material
NM-94170.80±0.05

Other Properties (reference value based on our data)
Formaldehyde adsorption-decomposition property
Compressive strength
N/mm2
Nail holding strength
N
Length direction
Humidiﬁed deﬂection %Width direction
Youngʼs Modulus in bending
N/mm2

○
2〜5
200〜500
0.02 or under
0.04 or under
2000〜4000

○

6

2〜5
200〜500
0.02 or under
0.04 or under
2000〜4000

High Function Products U n i q u e T E c h n o l o g yPatent No. 4018086

Tea Life (with green tea leaves: deodorizing-antibacterial)
Gypsum board with deodorizing and antibacterial properties.
Containing abundant active ingredients from natural green tea leaves, theboard provides a pleasant green tea scent.

■ Suggested for use in residential houses, schools, hospitals, welfare facilities, and shops.

was produced with the joint development of Itoen Corporation and Chiyoda Ute.

Qick Information
on Green Tea

Green tea was introduced to Japan from China about
800 years ago.

History

OH

High expectations for the antibacterial and deodorizing
eﬀects of catechin! Green tea expands beyond justbeing an enjoyable beverage.
HO

O

OH

Choose from 2 types

R1

Tea Life Regular

R2

Substrate for wall paper andpainted ﬁnish

OH

Research

It has been revealed that other than catechin, green tea has many greatcomponents that are good for health, such as vitamins, ﬂavonoids, theanine, andchlorophyll.

About catechin

Catechin is one type of polyphenol. It makes up approximately 10% of the weightof tea leaves, and exhibits antibacterial and deodorizing eﬀects, which has
attracted attention in the medical ﬁeld to develop ﬁbers containing green tea
leaves for clothes and towels.

*Please select wall paper and paint with good
air permeability.

Tea Life Closet(Paulownia T8)
For closet walls and ceilings

Eﬀectively Adsorbs Tobacco Odor

Demonstrated Excellent Antibacterial Effects

Tea Life and a standard gypsum board were each placed in a sealed box andA viable bacterial count (CFU/sheet) was made after a 24-hour exposure to a test

then exposed to cigarette smoke. The adsorption degree of ammonia, one of

specimen culture using the ﬁlm contact method established by the Society of Industrial

the components responsible for cigarette odor, was measured, which

Technology for Antimicrobial Articles. Test results conﬁrmed that Tea Life (gypsum

revealed that Tea Life adsorbed a larger volume of odor compared to theboard with green tea leaves) has an antibacterial eﬀect.

standard gypsum board.

Name ofbacteria

Acrylic sealed box

Viable bacteria count (CFU/Sheet)0 hourAcrylic cigarettesmoking machine

MRSA（※）

After 24 hours
Standard gypsum board : 8×104

16×104

Tea Life (gypsum board with green tea leaves) : <10
Gypsum boards(※) MRSA : Methicillin-Resistant Staphylococcus Aureus

60

Gas residual concentration (ppm)Standard Gypsum Board
50

Cigarette burning time

Tea Life (Gypsum board with green tea leaves)40

Tea Life (Gypsum board with green tea leaves)

Viable bacteria
countStandard gypsum board

16×10416×104

30

8×104

20

10

＜10
0

10

20

30

70

100

130

0hr

Smoke remaining time (min.)

24hr

0hr

24hr

JIS A 6901 Standard
Category

Tea Life Regular

Tea Life Closet (Paulownia T8)

JIS product name
Code
Thickness
Other standard values

Gypsum Board
GB−R

Decorated Gypsum Board
GB−D

mm

9.5
Pursuant to GB-R (see P9)

12.5

12.5

9.5
Pursuant to GB-D (see P13)

Type, Certiﬁcation Code, and Bulk Density of Fireproof MaterialType of ﬁreproof material
Certiﬁcation code
Bulk density

g/c㎥

Quasi-noncombustible material
QM-03240.75±0.05

Non-combustible material
NM-09480.75±0.05

7

Quasi-noncombustible material
QM-03240.75±0.05

Non-combustible material
NM-09480.75±0.05

Damping φ Board /Damping φ Mat-In Board
Using the damping mat, with a thickness of 3mm which
consist of a paperboard layer and a special viscoelastic resin
layer, was attached to a gypsum board.
Damping φ（photo of back）

Excellent Sound Insulation

Damping φMat-In Board

Featuring a 3mm damping mat made of paper board and a special viscoelastic resin
pasted on the back side. Damping φ Board and Damping φ Mat-In Board prevents thecoincidence eﬀect seen on walls and ceilings with gypsum board and reducestransmission loss in mid to high registers. Furthermore, Damping φ Mat-In Board will
not interfere with transmission quality when directly attached to concrete building
frames.

■ Sound Insulation <comparison with gypsum board>

125
160
200
250
315
400
500
630
800
1000
1250
1600
2000
2500
3150
4000

Sound Transmission Loss (dB)
Gypsum Board Damping φ Board Gypsum Board Damping φ Mat-In Board
12.5mm
22mm
12.5mm
21mm
24
24
26
26
27
28
29
30
30
30
27
26
28
32
34
37

19
20
20
21
24
25
26
27
30
31
33
34
35
35
34
34

20
18
19
21
23
25
26
27
29
31
33
33
33
28
26
29

Sound transmission loss [dB]CenterFrequency
(Hz)

24
24
24
26
27
29
30
31
33
35
36
37
38
38
38
40

Center frequency [Hz]■ Sound Insulation Performance <sound Insulation CA Bond method>

22mm

Gypsum Board
12.5mm+12.5mm

Building Frame

37
35
36
38
40
42
50
56
59
61
64
64
65
66
66
67
68
67
47
55

33
35
32
35
34
37
48
55
60
63
66
67
68
67
62
61
63
64
42
53

36
35
38
39
41
44
50
57
60
60
62
64
65
66
67
68
69
69
48
55

Damping φMat-In Board

100
125
160
200
250
315
400
500
630
800
1000
1250
1600
2000
2500
3150
4000
5000
TLD
平均

Sound transmission loss [dB]

Sound Transmission Loss (dB)CenterFrequency(Hz)

Center frequency [Hz]Cross section of a building
constructed by the soundinsulation CA Adhesive method

Performance
Category
Thickness
mm
Type of ﬁreproof materia
Certiﬁcation code

Damping φ Board

Damping φ Mat-In Board

12.5

22.0

Quasi-noncombustible material

Quasi-noncombustible material

QM-0636

QM-0633＊All products produced after order receipt.

8

Damping Mat-In Board Thickness 22mm
Or
Gypsum Board Thickness 12.5 + 12.5mm

General Wall & Ceiling Boards U n i q u e T E c h n o l o g y

Gypsum Board
Widely used in the construction of residential housing
to skyscrapers as ﬁreproof material conforming to therestrictions on interior ﬁnish stipulated in the BuildingStandard Law.
JIS A 6901 Standard
Category
Code
Thickness
mm
Water
%
Bending Breaking Length direction
load
NWidth direction
Non-combustibilty
Heat resistance
m2・K/W

Gypsum Board
GB-R
12.5
3 or under
500 or over
180 or over

9.5
3 or under
360 or over
140 or over

15.0※
3 or under
650 or over
220 or over

Grade No.2

Grade No.1

Grade No.1

0.043 or over

0.057 or over0.068 or over

※ Products with a thickness of 15mm are manufactured after receipt of order.

Type, Certiﬁcation Code, and Bulk Density of Fireproof Material
Thickness
mm
Type of ﬁreproof material
Certiﬁcation code
Bulk density

9.5
Quasi-noncombustible material
QM-98280.65 or over

g/c㎥

12.5
Non-combustible
material
NM-86190.65 or over

15.0※
Non-combustible
material
NM-86190.65 or over

※ Products with a thickness of 15mm are manufactured after receipt of order.

Other Properties (reference value based on our data)

This product is certiﬁed as a ﬁreproof product when coated with gypsum plaster

Thickness
Compressive strength
Nailing strength

mm
N/mm
N
Length direction
Humidiﬁed deﬂection
Width direction
Youngʼs Modulus in bending N/mm2

Gypsum board thickness 9.5mm+
Gypsum Plaster coating thickness 3mm or overSpeciﬁcations for certiﬁcation as a ﬁreproof
material when coated with gypsum plaster
Type of ﬁreproof material certiﬁcation code
Certiﬁcation codeg/c㎥
Gypsum board bulk density

Non-combustible material
NM-8618
0.65 or over

9.5
2〜5
200〜500
0.02 or under
0.04 or under
1000〜300012.5
2〜5
200〜500
0.02 or under
0.04 or under
1000〜3000

Reinforced Gypsum Board
Type X / Type V
Widely used for ﬁreproof and sound structure.
Type X has inorganic ﬁbers, while Type V has inorganicﬁbers and inorganic minerals. These are added to
improve ﬁre resistance.

JIS A 6901 Standard
Reinforced Gypsum Board
GB-F

Category
Code
Thickness
Water
%

12.5
3 or under
500 or over
180 or over

15.0
3 or under
650 or over
220 or over

21.0
3 or under
850 or over
320 or over

Impact resistance

When a 500g steel ball is
dropped from a heightof 650mm, the board
placed on sand shall notfrom an indentation
larger than 25mm indiameter and no crack
shall be formed.

When a 500g steel ball is
dropped from a heightof 800mm, the board
placed on sand shall notfrom an indentation
larger than 25mm indiameter and no crack
shall be formed.

When a 500g steel ball is
dropped from a heightof 1000mm, the board
placed on sand shall notfrom an indentation
larger than 25mm indiameter and no crack
shall be formed.

Frame resistance

A 1000g lead bar ishung from the sample
specimen and when
exposed to ﬁre of
1000°
C, it shall not
break nor drop for 8
minutes.

A 1000g lead bar is A 1000g lead bar ishung from the sample hung from the sample
specimen and when specimen and when
exposed to ﬁre of exposed to ﬁr e of1000°
C, it shall not 1000°
C, it shall not
break nor drop for 10 break nor drop for 12
minutes.
minutes.

mm

Bending Breaking Length direction
load

NWidth direction

Non-combustiblity
Heat resistance m2·K/W

Grade No.1
0.052 or over

Grade No.1
0.088 or over

Grade No.1
0.063 or over

Other Properties (reference value based on our data)
Type, Certiﬁcation Code, and Bulk Density of Fireproof Material
Thickness

mm

Type of ﬁreproof material
Certiﬁcation code
Bulk density

g/c㎥

12.5
Non-combustible
material
NM-86150.75 or over

15.0
Non-combustible
material
NM-86150.75 or overThicknessmm
Compressive strength N/mm2
Nail holding strength
N
Humidiﬁed
Length direction
deﬂection
Width direction

21.0
Non-combustible
material
NM-86150.75 or over

Youngʼs Modulus in bending

9

N/mm2

12.5
2〜5
200〜500
0.02 or under
0.04 or under
1000〜3000

15.0
2〜5
200〜500
0.02 or under
0.04 or under
2000〜4000

21.0
2〜5
200〜500
0.02 or under
0.04 or under
3000〜5000

Water-Resistant Board /Non-combustible Water-Resistant Board
This board has a greater resistance to water compared to regulargypsum board. The board is used around kitchens, washrooms, toilets
and other humid places. It is mainly used for the base material forinterior.
JIS A 6901 Standard
Gypsum Sheathing
GB-S

Category
Code
Thickness
Water
Bending Breaking
load
N

mm
%
Length direction
Width direction

Resistance to peeling in water
Water absorption%
Surface water adsorpriong
Non-combustibility
Heat resistance
m2·K/W

9.5
3 or under
360 or over
220 or overGypsum board and facing
paper shall not separate.

12.5
3 or under
500 or over
300 or overGypsum board and facing
paper shall not separate.

10 or under2 or under
Grade No.2
0.040 or over

10 or under2 or under
Grade No.2
0.052 or over

Other Properties (reference value based on our data)

Type, Certiﬁcation Code, and Bulk Density of Fireproof Material
Thickness

mm

Type of ﬁreproof material

9.5、12.5

12.5※

Quasi-noncombustible
material

Non-combustible
material

Certiﬁcation code
QM-04930.73±0.07
Bulk density
g/c㎥※ Chiyoda Non-combustible Water-Resistant Board

Remarks

Thicknessmm
Compressive strength N/mm2
Nail holding strength
N
Length direction
Humidiﬁeddeﬂection
Width direction

NM-93460.70±0.05

Youngʼs Modulus in bending N/mm2

9.5
2〜5
200〜500
0.02 or under
0.04 or under
1000〜300012.5
2〜5
200〜500
0.02 or under
0.04 or under
1000〜3000● When constructing, please elevate the board 5〜10mm from the ﬂoor. In addition, attach waterproof tape to the cut surface, make sure that there is nocontact with water when constructing.
● You may also directly use the board without other boards beneath.

Structural Gypsum Board
Type BThe product is obtained by having a stronger nail later resistancecompared to the hard-type gypsum board

JIS A 6901 Standard
Category
Code
Thickness
Water
Bending Breaking
load
NStructural Gypsum Board Type B
GB-St-B
mm%
Length direction
Width direction

Impact resistanceWall Magniﬁcation

A 1000g lead bar is hung from the sample specimen andwhen exposed to ﬁre of
1000°
C, it shall not break nor drop for 8 minutes.

Fire resistanceNon-combustibilty
Heat resistance

12.5
3or under
500 or over
180 or over
500 or overWhen a 500g steel ball is dropped from a height of
650mm, the board placed on sand shall not from an
indentation larger than 25mm in diameter and no
crack shall be formed.

m2·K/W

Grade No.1
0.052 or over

mm

g/c㎥

Magniﬁcation

Nail, screws（fastening interval）

Frame ﬁxture
method

1.5

GNF40,SFN45,WSN*1、DTSN*2
outer periphery @ 100mm or below
Others @ 200mm or below

1.2
1.0
1.3
0.7

GNF40、GNC40（＠150mm or under）

Wall withStandard typesealed pillars Flooring type
Conventionalframing method Bearing wall Reinforcedsupporttype

Type, Certiﬁcation Code, and Bulk Density of Fireproof Material
Thickness
Type of ﬁreproof material
Certiﬁcation code
Bulk density

Construction
methodhaving pillarPenetrate Typeexposed12.5
Non-combustible material
NM-86150.80 or over

※1…3.8φ×32mm or over
※2…4.2φ×30mm or over
Frame construction: In accordance with the 2001 Ministry of Land, Infrastructure and Transport Notiﬁcation No. 1541
Conventional shaft assembly method: In accordance with the 1981 Ministry of Construction Notiﬁcation No.1100

10

General Wall & Ceiling Boards

Unique TEchnology

Sound Deadening Board
Features many through-holes for absorbing sound.
Based on the principle of resonant absorption, thesound insulation wall on the back side of the board anda layer of air reduces sound energy.

Sound Deadening
Board

Category
Code
Thickness

mm

Size

mm

Pore diameter
Pitch

mm

Number of pores
Pore ratio
%
Water
%
Bending Breaking load N
Length direction

Sound deadening board

Special Sound
Deadening Board

Decorated Sound
Deadening Board

GB-P
9.5
455×910910×910910×1820
6
22
20×40
40×40
40×80
5.8
3 or under
110 or over

400 or over

910×910455×910910×91013.4
24

6・8・10Random

32×36

306
612

24.5
3 or under

3.0
3 or underBacking material standard

Recycled hard paper

None

Recycled hard paper

Backing material
Quasi-noncombustible
speciﬁcation

Fiber cloth hard paperthat possesses equivalentor superior property

Rock wool felt(25mm bulk
speciﬁc gravity 0.04)Glass wool
heat insulating material(40mmbulk speciﬁc gravity 0.06)

Non-combustible backing
ﬁber cloth or material
that possesses equivalentor superior property

Certiﬁcation code g/cm3
Bulk density
Surface
Edge conﬁguration

QM-98270.70 or overUncoated

QM-98250.70 or overUncoated

Decorated sounddeadening board

QM-98220.70 or overWhite emulsion coating
Right angle(cut surface) Right angle(cut surface) Narrow chamfering

Special sounddeadening board

Ace Board
Non-combustible Gypstar
Non-combustible Cosmo Tone
Only 9.5mm thick but certified as non-combustible
material. Non-combustible facing paper is used.

Ace Board

JIS A 6901 Standard
Category
Code
Thickness

mm

Water

%

Bending Breaking Length direction
load

NWidth direction

Non-combustible Laminated Gypsum Board
GB-NC
9.5
No decoration
3 or over
360 or over
140 or overNon-combustiblity
Heat resistance m2·K/W

270 or over
105 or over
Discoloration at gray scale 3 is considered passing.Furthermore, there
should be no cracks, swelling or
crinkles on the surface.

Discoloration-faderesistance
Impact resistanceWith decoration

Non-combustible Gypstar

The diameter of the sinkhole issmaller than 25mm and the crack
did not pierce to the other side.

Grade No.1
0.043 or over

Grade No.1
0.043 or overType, Certiﬁcation Code, and Bulk Density of Fireproof Material
Categoryg yType of ﬁreproof material
Certiﬁcation code
Bulk density
g/c㎥

Ace Board
Non-combustible material
NM-28170.72 ±0.07

Non-combustible Gypstar/Cosmo Tone

Non-combustible material
NM-2816

Non-combustible Cosmo Tone

0.72 ±0.07

11Airtight Board
100mm

It is a product to be used for internal condensation
prevention.

Gypsum Board

Construction of moisture-proof film and gypsum board
can be done at the same time.
Category
Thickness
Size

Moisture-proof Film
100 Micron

Airtight Board
9.5／12.5910×1820／910×2420/1000×2000
0.180 （measurement）
Same as Gypsum Board

mm
mm

Moisture permeation resistance ㎡･s･Pa/ng

Other Properties

100mm＊Moisture permeation resistance of gypsum board 0.0000307㎡・ｓ・Pa/ng

Gypsum Lath Board
This gypsum board has embossed oblong patterns on the surface.
Used as a substrate for stucco ﬁnish.
※When directly painting alkaline finishing material to gypsum board, it may cause the base paperof the board to peel off.

JIS A 6901 Standard
Category
Code
Thickness
Moisture content
Bending Breakingload
N(kgf)

Gypsum Lath Boardmm%

7.0 (does not apply to the standard)

Length direction
Width direction

GB-L
9.5
3 or under
180 or over
125 or overType, Certiﬁcation Code, and Bulk Density of Fireproof material
The product is certiﬁed as aﬁreproof material whencoated with gypsum plaster

Gypsum Lath Board thickness 7.0mm+
Gypsum plaster coating thickness 8mm or overType of ﬁreproof material
Certiﬁcation code
Bulk density
g/c㎥

Non-combustible material
NM-86170.70 or overGypsum Lath Board itself is not certiﬁed as a ﬁreproof material, but is given certiﬁcation when the surface is coatedwith gypsum plaster. The coating shall be applied at the installation site.

Super Board（radio shielding ）Shielding
Prevents intrusion of external
electromagnetic waves and information
leakage from inside.

Face side(aluminum foil reflective layer)
Category
Code
Thicknessmm
Absorption performance
Other properties

dB

Super Board
12.5
910×182030
Equivalent to gypsum board

12General Wall & Ceiling Boards

Unique TEchnology

Decorated Gypsum Board Series
The gypsum board is used as a decorative interior material. There are various
products for different applications.

Gypstar / Cosmo Tone
Travertine pattern is used for ceilings in stores.

Gypstar

Closet Board
Japanese and Western Style patterns.
Wall material for storage space.

Type, Certiﬁcation Code, and Bulk Density of Fireproof Material
Thickness
mm
Type of ﬁreproof material
Certiﬁcation code
Bulk density
g/cm3

9.5
Quasi-noncombustible
QM-98240.70 or overCosmo Tone

Type, Certiﬁcation Code, and Bulk Density of Fireproof Material
Thickness
mm
Type of ﬁreproof material
Certiﬁcation code
Bulk density
g/cm3

9.5
Quasi-noncombustible
QM-98240.70 or over

12.5
Non-combustible
NM-17340.73±0.07※Products on sale vary by region.

C-8 Straight grain paulownia

Pearl
Western style patter. 2X8 size. Material for officespace.

G-223 Float

C-12 Linen

Type, Certiﬁcation Code, and Bulk Density of Fireproof Material
Category
Thickness
mm
Type of ﬁreproof material
Certiﬁcation code
Bulk density
g/cm3

G-532 Spool
13

G-223 Float
9.5
Quasi-noncombustible
QM-91600.75±0.05

G-532 Spool
9.5
Quasi-noncombustible
M-04410.75±0.05

HIT Ceiling

Type, Certiﬁcation Code, and Bulk Density of Fireproof Material
Thickness
mm
Type of ﬁreproof material
Certiﬁcation code
Bulk density
g/cm3

Ceiling material for Japanese style room.

New Yamato

9.5
Quasi-noncombustible
QM-98240.70 or over

New Natori

ESTEN

HIT CeilingWooden frame

14

14

11
9.5

11

23.5

9.5
440

440/ 470/ 482

Other Physical Properties (reference value based on in house data)

JIS A 6901 Standard
Decorated Gypsum Board
GB-D

Categoryg y
CodeThickness
Water

mm
%

Bending Breaking Length direction
load

NWidth direction

Discoloration-faderesistance

Impact resistanceNon-combustibility
Heat resistance

m2·K/W

9.5
3 or under
360 or over
140 or overThicknessmm

Compressive strength N/ｍ㎡

12.5
3 or under
500 or over
180 or over

Nail eﬀectiveness strength N
Humidiﬁcation
scaling factor %Length direction
Width direction

Bending Youngʼs Modulus

N/mm2

After irradiation for 48 hours After irradiation for 48 hours
in ultraviolet light carbon in ultraviolet light carbon
fade meter, check the fade meter, check the
discoloration for gray scale discoloration for gray scale
No. 3 to pass test. In addition, No. 3 to pass test. In addition,
no cracks on the surface or no cracks on the surface or
blistering, and no wrinkles.
blistering, and no wrinkles.
When a 500g steel bull is dropped When a 500g steel ball is dropped fromfrom a height of 500mm, the board
placed on sand shall not form an
indentation larger than 25mm indiameter and no crack shall beformed.

a height of 600mm the board plaed onsand shall not form an indentation
larger than 25mm in diameter and no
crack shall not be formed.

Grade No.2

Grade No.1

0.043 or over

0.057 or over

Board type with press on surface needs to have a bending breaking load that is 75% above the values presented in the above table.
Board type with press on the surface, does not apply to impact resistance.

14

9.5
2〜5
200〜500
0.02 or over0.04 or under
1000〜300012.5
2〜5
200〜500
0.02 or under
0.04 or under
1000〜3000

Other Related Products U n i q u e T E c h n o l o g yCalcium Silicate Board
A non-combustible construction material used as interior material for diverse
types of structures, including residential housing and buildings.

Glass Wool
A non-combustible building material, which is used as insulation and soundabsorbing material.
JIS A 6301, JIS A 9504, JIS A 9521 standard products.
※Products on sale diﬀer by region.

Back
Front

Damping SheetThis asphalt damping sheet is used with the Xenna G Board Damping System.
The combination with Xenna G Board reduces ﬂoor impact sound levels in wooden houses
where vibration control is diﬃcult.
ThicknessSize
Surface density

mm
mm
kg/m2

8
455×910
Approx.21

Ceiling Inspection Opening

Support bracket
Outer frame

An aluminum frame opening for ceiling inspections.
Inner frame can be detached freely; it can be set without tools.
Inner frame
Latch

Item number
CRP-303
CRP-454
CRP-606

Outer frame ceiling material Inner frame ceiling material＜W＞×＜H＞
w×h
303×303454×454606×606

269×269
420×420572×572

The photograph is a support bracket.

15

Kita-no-Yasuragi Smile(humidity control stucco)

Moisture performance is improved by painting
on surface of a gypsum board.
Substrate

Moisture Absorption Moisture Desorptionn(g/m2)(g/m2)

Finishing Material

Gypsum Board 12.5mm

Vinyl chloride wallpaper

42

Gypsum Board 12.5mm

Kita-no-Yasuragi Smile: 3mm coating thickness

123

80

SAWAYAKA Gypsum Board 12.5mm Kita-no-Yasuragi Smile: 3mm coating thickness

251

206

34

Moisture absorption: 25°C, 50%RH → 25°C, 90RH Weight change in 24 hours
Moisture desorption: 25°C, 90%RH → 25°C, 20RH Weight change in 24 hours

Excellent Chemical Adsorption EffectFormaldehyde

120

120

Blank

80
60
40
20

100
Residual ratio (%)

100
Residual ratio (%)

Residual ratio (%)

100

Ammonia

Toluene

120

Blank

80
Kita-no-Yasuragi Smile

60
40
20

Blank

80
60
40
20

Kita-no-Yasuragi Smile

Kita-no-Yasuragi Smile

0

0
0

500

1000

1500

2000

0
0

100

Time (mins.)

200

300

400

100

0

Time (mins.)

200
Time (mins.)

300

400

All 18 Color Variations

SBI-03
Blue ash

SBI-02
Pale yellow green

SBI-03Beige

SWI-04
Ivory

SWI-05Cream

SWI-06
Cameo beige

SWI-11
White

SWI-12
Flesh

SWI-13
Light cameo beige

SWI-14
Shell pink

SWI-15
Dark yellowish red

SWI-16
Salad green

SWI-17
FlaxenSWI-18
Tobacco brown

SWI-19Almond green

SWI-20Amber

SWI-21
Lithograph color

SWI-22
Slate gray

※ The displayed color may be slightly diﬀerent from the actual product.

16

Other Related Products

Unique TEchnology

SAWAYAKA Health Grain(underfloor humidity control material)

This underﬂoor humidity control material is composed of crushed charcoal and
Wakkanai diatomaceous earth, possessing outstanding humidity control properties.
The product is packaged in a bag. Lining 12 bags per
3.3m 2 area will complete the procedure.
When disposing this product,
only mix into soil.

Moisture absorptiondesorption function

Deodorizing eﬀect

Functional diagram of SAWAYAKA Health Grain

Maintains the humidity under the floor at a
comfortable level throughout the year.

Eliminates odors from underfloor.

SAWAYAKA Health Grain is used under ﬂoors where humidity exceeds 90% .

The raw material for SAWAYAKA Health Grain, diatomaceous earth and

SAWAYAKA Health Grain will slowly lower the humidity for 1.5 months, andcrushed charcoal, both provide a powerful deodorizing eﬀect.

thereafter maintain the humidity to less than 80% throughout the year.

This product absorbs odor developing under the ﬂoor and improves■ Annnual change in humidity tested at homeliving conditions.

100■Deodorizing eﬀect of various materials (24hours) (%)

95

Relative Humidity%

90
85

Safety Line

80
75
70
65
60
55

No SAWAYAKA Health Grain
SAWAYAKA Health Grain applied

50
45
40
Sep.

Open air humidity

Oct.

Nov.

Dec.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Odor emitting
matters

Crushedcharcoal

Diatomaceous
Earth

ZeoliteSilica gel

Ammonia
Hydrogen sulﬁdeAcetic acid
Pyridine
Methylmercaptan
Trityl amine
Formalin
Acetic ether

100
100
100
–
–
–
100
100

100
30
100
100
60
100
100
–

20
20
–
–
–
–
–
–

100
10
–
–
–
–
–
–

Prevents rotting of wooden floor framing
and protects against termites.

Prevents corrosion of pipes and metallic
objects mounted underfloor.

When the moisture content of the wood exceeds 20% and the temperature rises

Steel corrodes under ﬂoors with high humidity. SAWAYAKA Health Grain controls

to about 30°
C, wood rotting fungus becomes active and rots wood. Similarly,

humidity and prevents corrosion of pipes and metallic objects under the ﬂoor.

termites also damage wood under the above conditions. SAWAYAKA Health Grain■ Annual transition of under ﬂoor metal corrosion (change in weight)

maintains the moisture content of the wood at below 20% and protects wooden
ﬂoor framing from rotting, fungus, and termites.

0.20■ Moisture content of wooden ﬂoor framing（annual transition）.

No SAWAYAKA Health Grain

0.18

SAWAYAKA Health Grain applied

0.16

30

Open air humidity

Relative Humidity%

0.14
25
0.12

Safety Line

20

0.10
0.08

15

0.06

10
5

No SAWAYAKA Health Grain

0.04

SAWAYAKA Health Grain a pplied
Open air humidity

0.02

0

0
Sep.

Oct.

Nov.

Dec.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Sep.

17

Oct.

Nov.

Dec.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Accessory Materials U n i q u e T E c h n o l o g ySukima-Naito
First started as a gap ﬁller for ﬁre insulation walls, but now can be used for avariety of gypsum board walls. This is a dry-curable product. You can use acommercially available cartridge gun.
F☆☆☆☆ product. (Japan Adhesive Industry Association JAIA 010206)■Note

Please keep away from places where there is a risk of freezing.
If there is a gap of more than 8mm, please use the FR felt ﬁrst.

Capacity
Packagingml
pieces/per box

330

900

20

12

FR Felt
Is a material to be ﬁlled in between the precursor for ﬁreproof soundinsulation walls. Use in conjunction with Sukima-Naito.
It is a non-ﬂammable material made of inorganic ﬁber . Bulk density
150kg/m 3.

Application (classiﬁcation with the thickness of underlayment)

12.5/15mm

Dimension (thickness X width X length) mm

10×10×1000

10×15×1000

10×20×1000

100 or 200

100

100

Packagingpieces/per box

21mm

Urethane Seal・Acrylic Seal
Is a gap ﬁller to be used for gypsum board wall. There are two types
polyurethane and acrylic. Can be used in order to ensure the soundinsulation performance.
You can use a commercially available cartridge gun.
F☆☆☆☆ product. (Japan Sealing Association Urethane: JSIA 843002
Acrylic: JSIA 843001)
Acrylic seal

Application (classiﬁcation with the thickness of underlayment)

Urethane seal

Dimension (thickness X width X length) mm

320

330

900

Packaging

10

20

12

pieces/per box

G CorkUsed to ﬁll in the gaps between the walls to ensure the ﬁre proof wall.
The reaction curing type used to mix with water. One bag Contains 20kg.

18

Accessory Materials

Unique TEchnology

CA BondCA bond is an adhesive used when applying gypsum board to a
concrete foundation. Adjustment of concrete foundation is notneeded. Only water is needed for mixing. One bag contains 20kg.
F☆☆☆☆ product. (Japan Architecture Coverings Industry
Association 1001001)

MK−2
Overlaid clad adhesive for gypsum board. Mainly, used in our ﬁreproof “newSTW”. It is a type of inorganic dry curing. Please use in conjunction with staples
or screws.

■Precautions Please store at above 5℃ and in a location which does not rise above 35℃.
When stored for a long time the viscosity of the adhesive is increased in which youneed to stir and add water little by little to adjust the viscosity.

SD Bond
It is an elastic adhesive to be used for the overlapped gypsum board for solid borne
sound measures. It will reduce the transmitted waves of sound when objects hit thewall. You can use for our ﬁreproof sound insulation wall “TGW 2H-C・G ”(solid borne
sound proof type). Reaction is curing type. Please use in conjunction with staples.
One box contains 20kg.
F☆☆☆☆ product. (Japan Adhesive Industry Association JAIA 008634)■Precautions ・In order to fully ensure the sound performance, make sure it is entirely bonded.
Cannot get the full sound performance if bond is only added by dots.
・Please store at above 5℃ and in a location which does not rise above 35℃.
・Use within 6 months from the date of manufacture.
・Do not mix with other adhesives.

Joint Compounds■ Please see individual catalogues for details.

It is a putty material used for joint processing of gypsum board.
Reaction curing type used to mix with water.
F☆☆☆☆ product. (Japanese Architecture Coverings Industry Association
0508001)■ Mix the powder with water. Two types available; ﬁrst coat / second coat.

Rakutto B

Rakutto F

Category

Rakutto B-60

Rakutto B-90

Rakutto F-90

Rakutto F-120

Application time

60 minutes

90 minutes

90 minutes

120 minutes

Application
Dimensionkg/per pag

PrimerFinish coating

8

8
19

Fiber Tape
Joint processing material for gypsum board.
A combination of joint compound.

Fiber Tape

Category
Thickness

Winding length

mmm/rollWidth 50mm
100

Tackiness

Yes

Material

Glass ﬁber (mesh)

Fiber Tape

Corner Beat
It is used for the external corner portion of the gypsum board
walls, and is made of galvanized sheet reinforcement.

H Joiner
It is used for our non-stud fire wall “SP-N1” and “TGSPW”.
It is a galvanized steel sheet joint joiner.
Place both sides of the Reinforced Gypsum Board (21mm
thickness) into the joiner.

Curing Sheet / Curing Tape
Use curing sheet for protecting the ﬁnished surface and curing tape to hold the sheet.

Curing Sheet

The sheet is light and soft with a embossed surface and can be cut with acutter.

Curing SheetCuring Tape

This tape is used to stop the curing sheet. It can be cut easily by hand. Width 38mm,
winding length 50m. It is a type of tape in which it does not leave adhesive on thesurface (Stainless steel adhesive force 700g/25mm).
20

Curing Tape

DATA

Gypsum Board
Related Information

JIS for Gypsum Board Products
Background on Speciﬁcation Revisions
1994

The conventional 5 published speciﬁcations for gypsum boards are integrated as JIS A 6901 Gypsum Board.
Sound deadening gypsum board with pores (GB-P) was subsumed within the JIS A 6301 Sound Absorbing Materials.

1997

In order to make JIS A 6901 Gypsum Board conform to the global International Quality Standards, aimed to align with ISO
6308:01908 (Gypsum Plaster board-Speciﬁcation).
The former non-combustible gypsum laminated board is added as a JIS Certiﬁed product, non-combustible laminated gypsum
board (GB-NC).

2005

Hard gypsum board (GB-*-H), moisture absorption-desorption gypsum board (GB-*-Hc), structural gypsum board (GB-St) wereadded to the JIS A 6901 Gypsum Board.
Note) The letter R, S, or D is inserted in place of asterisk depending on the type of gypsum board.

2014

To improve the reliability of ﬁre performance, the lower limit for "thickness" has been raised, also "mass per unit area" and"speciﬁc gravity" has been nornalized by the Ministry of Land, Infrastructure and Transport.

Categories and Codes of Gypsum Board Regulated by JIS
Category

Code

Note

Gypsum Board

GB-R

Standard gypsum board.

Gypsum Board Sheathing

GB-S

Featuring water repellant paper facings and core.

Reinforced Gypsum Board

GB-F

GB-R with inorganic ﬁber mixed into the core.

Gypsum Lath Board

GB-L

GB-R with oblong pores on the surface.

Decorated Gypsum Board

GB-D

GB-R with decorated surface.

Non-combustible Laminated Gypsum Board

GB-NC

GB with non-combustible face paper or boards with decoration.

Sound Deadening Gypsum Board with Pores

GB-P

A Sound absorbing material speciﬁed by JIS A 6301.

GB-R-H

Gypsum boards with about 1.2 times or higher impact resistance than GB-F andabout 1.3 times or higher ﬂexural fracture load than GB-R.

GB-R-Hc

Gypsum boards that have equivalent performance to GB-R and GB-D but haveenhanced moisture absorption and desorption performances.

Standard Hard Gypsum Board
Moisture AbsorptionDesorption Gypsum Board

GB-D-Hc

Structural Gypsum Board

A TypeGB-St-A

B TypeGB-St-B

Gypsum boards that have equivalent performance to GB-F but have enhanced
lateral nail resistance, which will be the standard for categorizing Type A andType B.

Edge Conﬁgurations
SquareTapered

Beveled

2〜6mm

40〜80mm

2〜6mm

0.6〜1.9mm

Dimensional Tolerance
Unit mmThickness

Length

Width

＋0.5

＋3

0

0

−3
21

DATA

Gypsum Board
Related Information

Outline of Testing Methods for Various Properties
Test specimens used are of a constant mass dried at 40°
C.

Moisture Content
The rate of weight change after drying a specimen stored in a normal
state at 40ºC. Weight after drying is the baseline weight.

The rate of weight change whena glass tube with an inside
diameter of 60mm is placed on
the board with the tube
periphery sealed, in which water Faceis poured to a height of 50mm paper
and left standing for 3 hours.
Weight before water absorption
is the baseline weight.

Flexural Fracture Load
300mm × 400mm sample specimen set on a support tablemeasuring 350mm. At wet state, the sample specimen is left standingfor 96 hours under control conditions of a temperature of 40ºC andhumidity at 85~90%rh.

50mm

Surface Water Absorption

Glass or metal tube (ID 60mm)

Water

Sealant

Sample specimen
About 80mm

Loading pole

Discoloration-Fade Resistance
m

10
〜

R3

After 48 hours irradiation with a UV carbon fade meter, the specimen shall not show discoloration that exceeds level 3 of the grayscale for discoloration-fade and there shall be no cracks, swelling, or
wrinkles on the surface.

m

R3

Samplespecimen

Support
pole

m

m

10

〜

Support pole

Flame Retardant Property

350mm
400mm

Speciﬁcation showing non-ﬂammability. The rise in temperature andthe degree of smoke emission are checked during heating. JIS A
1321 testing method.

Impact Resistance
When a 500g steel ball is dropped onto a 300mm × 400mm sample
specimen, placed on sand, it shall not form cracks and an indentation
formed shall be smaller than the predetermined diameter. The heightfrom which the steel ball is dropped diﬀers depending on the
thickness of sample specimen.

Heat Resistance
Value indicating how diﬃcult heat transmission is. JIS A1420 testing
method.

Height of drop
Board thickness

Board type
GB−F,GB−H,GB−St
GB−D,GB−NC

Types of Fireproof Material

9.5mm

12.5mm

15mm

21mm

500mm
500mm

650mm
600mm

800mm
700mm

1000mm―Speciﬁcation showing non-ﬂammability. Based on the BuildingStandard Law.

Compressive Strength

Fire Resistance

Maximum load when a 50mm × 50mm sample specimen iscompressed towards the thickness direction.

When both sides of a 50mm × 300mm sample specimen with aweight of 1000g are exposed to two gas burners at
1000ºC for one of the predetermined durations listed below, thesample specimen shall not break nor drop. Exposure time diﬀers
depending on the thickness of sample specimen.
Supportmaterial

Support pole

12.5mm
(8 minutes exposure)

Width1.0mm

Samplespecimen· Thickness of
15.0mm

Support pole

Samplespecimen· Thickness of
Gas burner(12 minutes exposure)

Humidiﬁed Deﬂection
The rate of size change of a 40mm × 100mm sample specimen,
which is dried at 40ºC, and then left standing in open air for a day at
23ºC and 90%rh humidity.
300mm(10 minutes exposure)21.0mm50

25mm· Thickness ofNail Holding Strength
Maximum load to sink the head of a nail that is already nailed into
the board.

Youngʼs Modulus in Bending

Gas burner
38

Value showing the ﬂexural rigidity of the board. Calculated from theﬂexural fracture load measurement data.

Heatedsection

38

25mm

76

Weight 1kg

Moisture Absorption and Desorption
Measurement of the mass of a 100mm × 100mm sample specimen
sealed with aluminum tape, except for the face side, which ismaintained in a predetermined condition.
Mass 1: 23±0.5°
C 53±3%RH constant mass
Mass 2: 23±0.5°
C 93±3%RH 24 hours
Mass 3: 23±0.5°
C 53±3%RH 24 hours
Moisture absorption (g/m2) = (Mass ②− Mass ①)/ Sample specimen one surface area
Moisture desorption (g/m2) = (Mass ②− Mass ③ )/ Sample specimen one surface area

Weight 1kg

Resistance to Peeling in Water
A sample specimen soaked in water for 2 hours is checked to see
whether its paper facing peels oﬀ from the core. Specimens that havebeen measured for water absorption content are used.

Lateral Nail Resistance

Water Absorption Content

The strength required to fracture a 150mm × 75mm sample
specimen when a round steel bar (φ 2.6mm) is inserted into a point
12mm away from the edge of the specimen, and then tensile load is
added.

The rate of weight change when a 300mm × 300mm sample
specimen is soaked in water for 2 hours. Weight before soaking inwater is the baseline weight.
22

DATA

Fire proof R e l a te dInform a ti on

Types of Fireproof Material

Noncombustible
Materials

Fireproof
Material

Quasi-noncombustible
Material

Flame
Retardant
Material

23

Construction material that fulﬁlls theconditions described below for twenty
minutes after being exposed to heat fromﬁre:
1. Material that will not burn.
2. Material that will not deform, melt, crack,or form any other damages that pose
hazards to ﬁreﬁghting operations.
3. Material that will not emit smoke or gasesthat pose hazards when escaping.

Construction material that
fulﬁlls conditions 1, 2, and 3
described in non-combustible material,
for ten minutes after being exposed to heatfrom ﬁre.

Construction material that
fulﬁlls conditions 1, 2, and 3
described in non-combustible material,
for ﬁve minutes after being exposed to heatfrom ﬁre.

DATA

Fire proof R e l a te dInform a ti on

List of Restrictions on Interior Finish
Materials allowed for use in building interiors are speciﬁed by the Building Standard Law, which stipulates that only material certiﬁed as
non-combustible or quasi-noncombustible, depending on the use and scale of the building structure, can be used as interior material.
Total Floor Area Available for the Relevant Use
Use / Structure / Scale

Fireproof structures Quasi-ﬁreproof structures
Speciﬁc evacuation collapse
time prevention buildings(h≧1 hour)

Other structures

Speciﬁc evacuation collapse
time prevention buildings（45≦ｈ≦1）①

Theaters, movie theaters,
entertainment halls, pavilions,
auditoriums assembly halls(Seating)
400m2 or larger②

Hospitals, clinics (with inpatient
facilities),hotels,inns, boarding
houses, apar tment complex, dormitories, nursing homes, childwelfare facilities (En forcement
Decree19-①）(3r d ﬂoor and above)
300m2 or larger (excluding
buildings with ﬁreproof
compartments per each orwithin 100m2 (200m2 forapar tment complexes). The
same applies to the rightcolumn).

(2nd ﬂoor)
300m2 or larger (hospitals and clinics are thosewith inpatient facilities on
the 2nd ﬂoor）

200m2 or larger③

Department stores,
supermarkets, shops, night clubs,
bars, dance halls,
waiting rooms, restaurants,
catering establishments andother merchandisingestablishments (excluding
businesses with area of 10m2 or
smaller)(3rd ﬂoor and above)
1000m2 or larger(2nd ﬂoor)
500m2 or larger

200m2 or larger④

Areas or rooms in undergroundﬂoors used for purposes listed in①, ②, or③

All⑤

Garage, auto-repair shop

All⑥

Living quarters with no windows(Refer to the Building Standard
Law 128-3-2)

⑦

⑧

⑨

According to number of ﬂoors or
the scaleRooms using ﬁre11th ﬂoor and above(Seating)
100m2 or larger⑪

Elevator hall

Non-combustible
material
Quasi-noncombustible
material
Fire retardantmaterial*3 (Structureswith living quarters on
3rd ﬂoor and higher
Non-combustible
must usematerials
non-combustible orquasi-noncombustible Quasi-noncombustimaterial for the ceiling)
ble material

１２９- ②
１２８-4-①2
１２９⑤
１２８-３-２

All (excluding buildings with ceilings higher than 6m)· 3rd ﬂoor or above with an area exceeding 500m2· 2nd ﬂoor with an area exceeding 1000m2· 1st ﬂoor with an area exceeding 3000m2
However, the followings are exceptions:
1. Schools, etc. (En forcement Decree126-2-①-2)
2. For regular buildings which have a ﬁre compartments every 100㎡,whichhave a section in which the height is lower than 31m.
3. Portions 31m or below in buildings used for purposes described in ②.

１２９・①
１２８-4・①

１２９- ③
１２８-4-①-3

Quasi-noncombustible
material

Non-combustible material*
Quasi-noncombustible material*

Same as above

１２８-4-②③
１２９-④

Fire retardant material*3

Residential housing: rooms on the second ﬂoor and higher, except Non-combustible material
for the highest ﬂoor, that use ﬁre
Quasi-noncombustible
material
Other structures: all rooms using ﬁre

−

１２９-⑥
１２８-4-④
１１２-⑤

Area with a ﬁreproof compartment within 100m2＊1

Area with a ﬁreproof compartment within 200m2(excluding ﬁre- proof equipment possessing 20-minute ﬁre blocking capacity)

Non-combustible material /１１２条-⑥
Quasi-noncombustible material (including substrate)*

Area with a ﬁreproof compartment within 500m2(excluding ﬁre- proof equipment possessing 20-minute ﬁre blocking capacity)

Non-combustible material (including substrate)* １１２-⑥＊2

Area with a ﬁreproof compartment within 200m
(excluding ﬁreproof equipment possessing 20 minute ﬁre blocking
capacity)

Non-combustible material /Quasi-noncombustible
material(including substrate)*

Area with a ﬁreproof compartment within 500m2(excluding ﬁreproof equipment possessing 20 minute ﬁre blocking capacity)

Non-combustible material(including substrate)

2

Underground mall

Living quarters

Provisions
Enforcement
Primary passage ways,
ordinance of thestairways and aisles lead- Building Standard
ing to the aboveground Law

Non-combustible material

Area with a ﬁreproof compartment within 100m2⑩

Restrictions on Interior Finish

Non-combustible １２８-3-①-3
material
１２８-3-⑤(including substrate)

Non-combustible material or quasi-noncombustible
material (including substrate) for areas
compartment- ed with smokeproof walls

All−*1 The provisions of the ⑨ column, for the ﬁr compartment portion within 100m2,the limit of the materials used is not listed, it is deﬁned by the rank and scale of buildings.
*2 Provisions of ⑩ column, for ﬁre compartment portion within 100 m2, the limit of the materials used is not listed, for the part ①②③ applciations, provision ④ is applied.
*3 When following the rules established by the Minister for ceilings to be quasi-noncombustible materials, you may use wood for the walls.
Note 1. Areas of the building that are subject to interior restrictions are walls and ceilings (if there is no ceiling, then roof) facing the rooms of living quarters and primary passage ways, stairways, andaisles leading from the living quarters to the above ground. However, for columns ①, ②, ③, ⑦, ⑨ and ⑩ with asterisks, the restriction does not apply to walls 1.2m or below from the ﬂoor of
the relevant living quarters (En forcement Decree 129-①-112-⑥).
2. The most stringent regulation shall apply to the portions of building structures subject to two or more regulations of the restrictions on interior ﬁnish.
3. Regulations of the restrictions on interior ﬁnish shall not apply to the portions of building structures, which install automatic sprinklers, water spray extinguishing systems, foam extinguishingsystems, or any other equivalent automatic equipment, as well as smoke ventilation systems stipulated in the En forcement Decree 126-3 (En forcement Decree 129-⑦).
4. Regarding the regulations on column ⑨⑩, the portions of building structures that install automatic sprinklers, water spray extinguishing systems, foam ex- or any other equivalent automatic
equipment are allowed to have twice the ﬂoor area for the ﬁreproof compartment. (En forcement Decree112-①)
5. This regulation is set to regard the hoistway door as ﬁreproof door that corresponds to the En forcement Decree 110-④ and 112-⑪ in line with the regulations on the structure of the hoistway
door of elevators ⑪.
6. Please refer to the Enforcement Decree, its enforcement ordinance, and other related documents for detail.

24

DATA

Fire proof R e l a te dInform a ti on

Manufacturing Flow Chart for Gypsum Board Products
gypsum
1 Crude gyps

2 Firing furnace

3 Crusher

4 Siloconveyer
Belt conve
Additives

5 MixerScrew conveyer

Forming plate

6Paper facing(face)

Paper facing(back)Inspection ~ Stock

Belt conveyer

MolderMixer

Cut to the speciﬁed size

Face and backpaper facings

Additives

Cutting

11Inspection

Board cutting

SiloCrusherFiring furnace

Crude gypsum

10 Dryer

7 MolderCutter

8Belt conveyer

Dryer

9 CutterRemove excess moisture from the board
Wait to harden and cut to the predetermined size
Gypsum of the molded board hardens while on the conveyer belt
Slurry is sandwiched between the face and back paper and molded into thepredetermined shapeMix gypsum and admixture with water to form slurry
CaSO41/2H2O+3/2H2O→CaSO42H2O
Additive necessary for board formation
Store calcined and pulverized gypsum
Crush to adjust the grain size of calcined gypsum
Calcine crude gypsum
CaSO42H2O→CaSO41/2H2O+3/2H2O
Crude gypsum CaSO・2H O Including scrap gypsum board
4

2

25

MEMO

26

How to Handle Gypsum Boards
1. Use the product for its speciﬁed use.
Avoid use in places where the boards may be continuously or repeatedly exposed towater, high humidity, or condensation (saunas, basements, bathrooms, indoor pools, etc.),
because water absorption (moisture absorption) may reduce the strength of the boards orcause them to fall oﬀ.
2. A rise in humidity during and after installation may cause mold to develop. Dehumidify
and assure proper ventilation to lower the humidity.
3. Place the boards on a pallet, pieces of wood, or underlay board and cover with a water
proof sheet at construction sites to protect against rain and water.
4. The weight of each gypsum board varies with thickness, size, and type. However,in general, gypsum boards with a size of 9.5 X 910 X 1,820mm weigh about 11kg, andthose with a size of 12.5 X 910 X 1,820mm weigh around 14kg. Considering the weight ofgypsum boards, make sure to wear a safety helmet, safety shoes, and slip-resistant gloves
when handling and transporting them.
5. Dust may generate when cutting, processing, or installing. Use safety glasses and a dust
mask to prevent dust from entering your eyes, nose, and mouth.
6. Store the boards in a well-balanced state, arranged in neat stacks with the front and back,right and left, and top and bottom lined up. If a large number of gypsum boards arestacked in an unbalanced way, they may collapse.
7. Miscellaneous
1. Currently, asbestos is not used in our products.
2. Chlorpyrifos is not used in our products.
3. Chiyoda gypsum boards are not classiﬁed as a construction material that releases
formaldehyde stipulated on the notiﬁcation, and thus has no restriction on the area ofuse.

Head Office : 928 Takamatsu, Kawagoe-cho, Mie-gun, Mie 510-8570
Phone +081-59-363-5555 Fax +81-59-363-5553
Sapporo Branch Office : Kita 5-30, Hondori 14, Shiraishi-ku, Sapporo City, Hokkaido 003-0027
Phone +081-11-865-7100 Fax +81-11-865-7105
Tokyo Branch Office : Kuramaechiyoda Bldg. 3-14-11 Kotobuki, Taito-ku, Tokyo 111-8520
Phone +081-3-6635-1650 Fax +81-3-5828-2860
Chubu Branch Office : 928 Takamatsu, Kawagoe-cho, Mie-gun, Mie 510-8570
Phone +081-59-365-5211 Fax +81-59-364-5219
Osaka Branch Office : Yotsubashinakano Bldg. 1-1-14 Minami-Horie, Nishi-ku, Osaka City, Osaka 550-0015
Phone +081-6-6541-7735 Fax +81-6-6541-8060
Fukuoka Branch Office : 741-1 Nakanotsubo, Uchihashi, Kasuya-machi, Kasuya-gun, Fukuoka 811-2308
Phone +081-92-931-7373 Fax +81-92-931-7371