O-PHALT
One-component modiﬁed asphalt-based coating waterprooﬁng material

O-PHALT is a one-component emulsion type

coating waterprooﬁng material made mainly of asphalt,
which is reliable in waterprooﬁng, and rubber, which
enhances the elongation performance of the coating.
main component : asphalt SBR etc.

Regardless of the shape of the substrate, it forms a

Solid content : 62~68%

seamless waterprooﬁng layer.

viscosity : 150~8000mPa・ｓ(77ºF）
pH : 7±1
speciﬁc gravity : approximately 1.0

Since it does not contain substances that are harmfulColor : dark brown (After drying, blackish brown）

to environmental hormones such as formaldehyde,
which adversely aﬀect the human body, it can be usedsafely in various places both indoors and outdoors.

Here is an experimental video that shows
the watertightness of O-PHALT.

No stirring required
No weighing required
You can use it as is.

01
1

Quick drying
Since it dries quickly,
the construction period
can be shortened.

Adhesion method using O-PHALTＯ-М 5❹ ОS Topcoat ( Sand type )❸ О-PHALT❷ О-PHALT❶ О-PHALT Primer❶❷❸❹О-PHALT Primer

О-PHALTО-PHALTОS Topcoat (Sand type)0.04 lbs/ft²

0.16 lbs/ft²

0.12 lbs/ft²

0.06～0.12 lbs/ft²）

Ｏ- М10❺ОS Topcoat❹

О-PHALT❸О-PHALT❷О-PHALT + Cloth❶

О-PHALT Primer( Sand type )

❶

❷

❸

❹

❺

О-PHALT Primer

О-PHALT + Cloth

О-PHALTО-PHALTОS Topcoat (Sand type)0.04 lbs/ft²

0.16～0.2 lbs/ft²

0.2～0.24 lbs/ft²

0.12～0.16 lbs/ft²

0.06～0.12 lbs/ft²

02Insulation method using O-PHALT
Ｏ-Z10H❺ ОS Topcoat ( Sand type )О-PHALT❹ （O-PHALT+ O-PHALT Powder)
HО-PHALT❸ （O-PHALT+ O-PHALT Powder)H❷ О-PHALT Ventilation Cloth❶ О-PHALT Primer

❶

❷❸

❹

О-PHALT Primer

Cloth for О-PHALT（O-PHALT + O-PHALT Powder)

О-PHALT（O-PHALT + O-PHALT Powder)ОS Topcoat ( Sand type )0.04 lbs/ft²

Ventilation Cloth

0.28～0.32 lbs/ft²

0.2～0.28 lbs/ft²

0.06～0.12 lbs/ft²

О-PHALTH❺
HO-PHALT Products used
О-PHALT Primer

О-PHALTО-PHALT Cloth

O-PHALT Cloth SIt is an asphalt emulsion type water-basedprimer.
It is a material for good adhesion with thebase material.
It is suitable for asphalt-based waterprooﬁng materials.

Speciﬁcation : 39.7 lbs / steel canThis is an emulsion-type one-component
modiﬁed asphalt-based coating waterprooﬁng material made mainly of rubberand asphalt.
Regardless of the shape of the substrate,
it forms a seamless waterprooﬁng layer.
It is an environmentally friendly waterproof material that is safe for the humanbody and does not use ﬁre or solvents.

Solids : 18～22%Speciﬁcation : 39.7 lbs / steel can
Solids : 62～68%
Standard：JIS A 6021 Rubber asphalt type03

О-PHALT Thickeners

O-PHALT Cloth M

Viscosity modiﬁer
3.38oz of thickener is used for 39.7lbs of[ O-PHALT Cloth S ]Material : Tetoron cloth
Size : 3.41 ft × 164.04 ft[ O-PHALT Cloth M ]Material : Non-woven fabrics
Size : 3.41 ft × 328.08 ft

O-PHALT. Adjust as needed.

Speciﬁcation : 33.8 oz or 3.38 oz

Cement Reaction TypeModiﬁed Asphalt Coating Film Waterprooﬁng
O-PHALT H❻ ОS Topcoat ( None sand type )❺ ОS Topcoat ( Sand type )О-PHALT❹ （O-PHALT+ O-PHALT Powder)
HО-PHALT❸ （O-PHALT+ O-PHALT Powder)
HО-PHALT ＋ Cloth❷ （O-PHALT+ O-PHALT Powder)
H❶О-PHALT Primer❶❷

О-PHALT Primer

О-PHALT❸H

О-PHALT❹H

О-PHALTH

0.04 lbs/ft²

0.24 lbs/ft²❻

ОS Topcoat

ОS Topcoat

0.06 lbs/ft²

0.04 lbs/ft²( None sand type )（O-PHALT + O-PHALT Powder) （O-PHALT + O-PHALT Powder) （O-PHALT + O-PHALT Powder)

0.16 lbs/ft²+ Cloth❺

0.16 lbs/ft²( Sand type )PRODUCTS
О-PHALT Primer (for metal parts)

О-PHALT Powder

30.8 lbs

О-PHALT Ventilation ClothОS Topcoat ( Sand type )EMT0308AL 1000

6.6 lbs

Water-based epoxy-modiﬁed acrylic resin

It is an O-PHALT admixture that is a blend

There is adhesive on the back of the cloth

It is an emulsion-type paint based on acrylic

primer.

of special cement and aggregates.

sheet, and the ventilation path is an alu-resin that protects the O-PHALT.

It is used in the O-PHALT H method.

minum foil ventilation sheet.

Strengthens the surface of the waterproof layer.

Speciﬁcation : 30.8 lbs/bag or 6.6 lbs/box

Size : 3.28 ft × 164.04 ft

Speciﬁcation : 35.3 lbs / steel canPrevents deterioration of O-PHALT and improves durability.

Speciﬁcation : 44.1 lbs / steel can
Principal component : Acrylic emulsion
Color : Grey & Green
Solids : 55%

04

It has the advantages of modiﬁed asphalt-based coating waterprooﬁng
and polymer cement-based coating waterprooﬁng.

O-PHALTHEnsuring
quality

Simple&easy
construction

Modiﬁed asphalt-based polymer cement waterprooﬁng+O -P HALT

Cement Powder

Advantages of modiﬁed asphalt-based
coating waterprooﬁng

Advantages of polymer cementitious
coating waterprooﬁng

Advantages
・Proven waterprooﬁng of asphalt

Advantages
・Stable adhesion that can be applied to a slightly
damp base・Durability such as water resistance, adhesion,
and weather resistance・Accelerated curing by hydration reaction

・Good elongation of asphalt and elasticityof rubber
・High adhesion to asphalt tarpaulin・Retains the reliability and high elasticity of modiﬁed asphalt-based coating waterprooﬁng
・Cement powder formulation accelerates curing and improves strength
・Environmentally friendly and safe coating waterprooﬁng material that does not contain

Products used
OS Primer

OS BASEOS-sheets

The ground treatment material adheres dirt and dust

It is an organic solvent-based primeractive modiﬁer

A hybrid modiﬁed asphalt tarpaulin with a stripedthat cannot be removed from the surface of the baseand has an excellent conditioning eﬀect.

self-adhesive layer on the back of the sheet, whichto the base and improves the adhesive strength ofOS-sheets. It is a solvent type with little odor.

05※ Inhalation may cause poisoning, so be careful ofventilation and ﬁre.

Speciﬁcation：35.3 lbs / steel canSpeciﬁcation：44.1 lbs / steel can

Solids：45%

Solids：75%

dangerous goods

dangerous goods

Solvent : Acetone, xylene

Solvent : Asphalt Mineral Spiri

OS-Z40functions as both a ventilation layer and a waterproof layer.
Torch only the seat joint part.

ＪＩＳ: A6013 Class R Class 2 for exposed
single layer

Thickness：157 mil
Length：3.28 ft × 22.97 ft

HOS-sheets & O-PHALT (O-PHLT ) combined construction method

Compatible with various shapes ! Trestle part : O-PHALT（O-PHALT ）Ｈ■ Flat area part : OS-sheets ( OS-Z40 ) ■ Trestle part : O-PHALTH( O-PHALT )Hybrid Modiﬁed Asphalt Tarpaulin

Combined waterproofing methodwith OS-sheets

OS Topcoat

O-PHALT Primer

O-PHALT+ O-PHALT Cloth

OS-T25 (OS-JT25)

OS Primer・OS Base
OS-Z40
ＨRising part : Waterproof O-PHALT（O-PHALT ）■ Flat area part : OS-sheets ( OS-Z40 )■ Rising part : O-PHALT ( O-PHALT H )ＨOS-sheets edge : O-PHALT（O-PHALT ）■ Flat area part : OS-sheets ( OS-Z40 ) ■ Rising part : O-PHALTH( O-PHALT )■ OS-sheets edge : O-PHALT ( O-PHALT H )OS Topcoat

OS Topcoat

O-PHALT(O-PHALT H )+ O-PHALT Cloth

O-PHALT(O-PHALT H )+ O-PHALT Cloth

O-PHALT Primer
OS-T25 (OS-JT25)

O-PHALT Primer
OS-M40OS Primer・OS Base

OS-Z40OS-Z40OS Primer・OS Base

OS-T25 (OS-JT25)

PRODUCTS
OS-T25OS Topcoat (Non sand)Modiﬁed asphalt tarpaulin by torch method.

It is used for reinforcement.

This is an emulsion-type protective paint based on acrylic

It is a type of sheet that torches the entire back of

It is constructed with a double-sided torch.

resin used for exposure waterprooﬁng.

OS-sheets

OS-M40the sheet.

It protects the waterproof layer, maintains durability, prevents the temperature rise due to heat, and prevents thedeterioration of the waterproof layer due to ultraviolet rays.

ＪＩＳ: A6013 Class R Class 2 for exposed
single layer

ＪＩＳ: A6013 Class R Class 2 for non-exposed
multi-layer waterprooﬁng

Thickness：157 mil

Thickness：98.4 mil

Length：3.28 ft × 26.25 ft

Length：3.28 ft × 26.25 ft

Speciﬁcation：39.7 lbs / steel canPrincipal component : Acrylic emulsion
Color : Grey & Green06

Technical data

Notes

O-PHALT/JIS A 6021 Rubber asphalt type
O-PHALT

Test items

Over 0.25
Over 600

4.13Over 2.0747

Between 700
and 2000

19.3

Over 5.0

290

Over70Over 1000 ※Over 360

Over 1000 ※Over 360

Stretch rate ％+ 0.1

Between -4.0
and 1.0

Heat Treatment

112.2

Over 80

Alkaline Treatment

90.1

Over 80

Heat Treatment

Over 2300 ※Over 480

Alkaline Treatment

Over 2400 ※Tensile strength
TensileStrength
Ratio ％

Temperature
Dependence

0.37

N/㎟

Elongation at break ％Tear
Performance

N/㎟

Test Temperature-4℉
Test Temperature
140℉

Test Temperature-4℉
Elongation
rate between Test Temperature
grips at break
73.4℉％
Test Temperature
140℉

Heat expansion andcontraction properties
TensileTensile perfo- Strength
rmance after
Ratio ％
aging treatmElongationent
at break ％Deterioration properties
when stretched

JIS A 6021
Rubberasphalt type

Over 1000 ※Tensile strengthPulling
Performance

Installation precautions
・If rainfall is expected, avoid construction.
・The drying time ﬂuctuates depending on the weather, temperature and humidity.
・Use O-PHALT and O-PHALT PRIMER undiluted.
・Use the prescribed amount.

Handling precautions
・Please refrain from rough handling.
・Beware of accidental ingestion.

Over 480
No cracks andsigniﬁcantHeat Treatment No abnormality
deformations※No breakage at maximum test stroke

Maintenance of waterprooﬁng layer
In case of exposed waterprooﬁng
・As a general rule, the top of the waterproof layer cannot be used, except forthe maintenance of the waterproof layer.
・If you are going to walk on a waterproof layer, use shoes with soft and ﬂat soles.
・Fire, solvents, and chemicals may damage the waterproof layer,so be careful.
・Even in the case of light walking, please take the same measures as exposure
waterprooﬁng.

・If it gets in your eyes, it may cause irritation, so use protective eyewear.
・It can cause skin irritation, so use protective gloves.

Storage precautions
・Do not freeze.
・Do not expose to direct sunlight.
・After opening, keep it sealed.

Disposal precautions
Please dispose of the contents and containers in accordance with the laws
and regulations.

Maintenance・Regularly clean and inspect the waterproof layer (about twicea year).
In particular, make sure that there are no clogs in drains, drains, etc.
・If the protective paint has deteriorated, please reapply the protective paint.

［ Head Oﬃce ]9F Sanken Kitahama Building, 1-6-10 Hirano-machi, Chuo-ku ,Osaka 541-0046, Japan
Phone: +81-6-6201-2290
Fax: +81-6-6201-2291［ Neyagawa Warehouse]
10-10 Utani-cho, Neyagawa city ,Osaka 572-0856, Japan
Phone: +81-72-821-0150
Fax: +81-72-821-7578［ SaitamaLaboratory ]6-10-23 Inari, Souka city ,Saitama 340-0003, Japan

https://robusto.jp/※The contents of this catalog are subject to change without notice.