reglab/statecodes huggingface dataset:
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1501 - GENERAL › Subsection 1501.1 - Scope

Current through Register 1525, July 5, 2024
The provisions of this chapter shall govern the design,
				  materials, construction and quality of roof assemblies, and rooftop
				  structures.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1503 - WEATHER PROTECTION › Subsection 1503.1 - General

Current through Register 1525, July 5, 2024
Roof decks shall be covered with
approved
roof coverings secured to the building or structure in accordance with the
				  provisions of this chapter. Roof coverings shall be designed and installed in
				  accordance with this code and the
approved
manufacturer's
				  instructions such that the roof covering shall serve to protect the building or
				  structure.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1503 - WEATHER PROTECTION › Subsection 1503.2 - Flashing

Current through Register 1525, July 5, 2024
Flashing shall be installed in such a manner so as to
				  prevent moisture entering the wall and roof through joints in copings, through
				  moisture-permeable materials and at intersections with parapet walls and other
				  penetrations through the roof plane.
1503.2.1
Locations.
Flashing
				shall be installed at wall and roof intersections, at gutters, wherever there
				is a change in roof slope or direction and around roof openings. Where flashing
				is of metal, the metal shall be corrosion resistant with a thickness of not
				less than 0.019 inch (0.483 mm) (No. 26 galvanized sheet).
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1503 - WEATHER PROTECTION › Subsection 1503.3 - Coping

Current through Register 1525, July 5, 2024
Parapet walls shall be properly coped with noncombustible,
				  weatherproof materials of a width no less than the thickness of the parapet
				  wall.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1503 - WEATHER PROTECTION › Subsection 1503.4 - Roof drainage

Current through Register 1525, July 5, 2024
Design and installation of roof drainage systems shall
				  comply with Section 1503 and the
International Plumbing Code
.
				  [P]
1503.4.1
Secondary drainage
				required.
Secondary (emergency) roof drains or scuppers shall be
				provided where the roof perimeter construction extends above the roof in such a
				manner that water will be entrapped if the primary drains allow buildup for any
				reason.
1503.4.2
Scuppers.
When scuppers are used for secondary (emergency overflow) roof
				drainage, the quantity, size, location and inlet elevation of the scuppers
				shall be sized to prevent the depth of ponding water from exceeding that for
				which the roof was designed as determined by Section 1611.1. Scuppers shall not
				have an opening dimension of less than 4 inches (102 mm). The flow through the
				primary system shall not be considered when locating and sizing
				scuppers.
1503.4.3
Gutters.
Gutters and leaders placed on the outside of buildings, other
				than Group R-3, private garages and buildings of Type V construction, shall be
				of noncombustible material or a minimum of Schedule 40 plastic pipe.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1503 - WEATHER PROTECTION › Subsection 1503.5 - Roof ventilation

Current through Register 1525, July 5, 2024
Intake and exhaust vents shall be provided in accordance
				  with Section 1203.2 and the manufacturer's installation
				  instructions.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1503 - WEATHER PROTECTION › Subsection 1503.6 - Crickets and saddles

Current through Register 1525, July 5, 2024
A cricket or saddle shall be installed on the ridge side of
				  any chimney or penetration greater than 30 inches (762 mm) wide as measured
				  perpendicular to the slope. Cricket or saddle coverings shall be sheet metal or
				  of the same material as the roof covering.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1504 - PERFORMANCE REQUIREMENTS › Subsection 1504.1 - Wind resistance of roofs

Current through Register 1525, July 5, 2024
Roof decks and roof coverings shall be designed for wind
				  loads in accordance with Chapter 16 and Sections 1504.2, 1504.3 and
				  1504.4.
1504.1.1
Wind resistance
				of asphalt shingles.
Asphalt shingles shall comply with Section
				1507.2.7.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1504 - PERFORMANCE REQUIREMENTS › Subsection 1504.2 - Wind resistance of clay and concrete tile

Current through Register 1525, July 5, 2024
Wind loads on clay and concrete tile roof coverings shall be
				  in accordance with Section 1609.5.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1504 - PERFORMANCE REQUIREMENTS › Subsection 1504.3 - Wind resistance of nonballasted roofs

Current through Register 1525, July 5, 2024
Roof coverings installed on roofs in accordance with Section
				  1507 that are mechanically attached or adhered to the roof deck shall be
				  designed to resist the design wind load pressures for components and cladding
				  in accordance with Section 1609.
1504.3.1
Other roof systems.
Roof systems with built-up, modified bitumen, fully adhered or mechanically
				attached single-ply through fastened metal panel roof systems, and other types
				of membrane roof coverings shall also be tested in accordance with FM 4474, UL
				580 or UL 1897.
1504.3.2
Metal panel roof systems.
Metal panel roof systems through fastened or
				standing seam shall be tested in accordance with UL 580 or ASTM E 1592.
Exception:
Metal roofs constructed of
				  cold-formed steel, where the roof deck acts as the roof covering and provides
				  both weather protection and support for structural loads, shall be permitted to
				  be designed and tested in accordance with the applicable referenced structural
				  design standard in Section 2209.1.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1504 - PERFORMANCE REQUIREMENTS › Subsection 1504.4 - Ballasted low-slope roof systems

Current through Register 1525, July 5, 2024
Ballasted low-slope (roof slope < 2:12) single-ply roof
				  system coverings installed in accordance with Sections 1507.12 and 1507.13
				  shall be designed in accordance with Section 1504.8 and ANSI/SPRI
				  RP-4.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1504 - PERFORMANCE REQUIREMENTS › Subsection 1504.5 - Edge securement for low-slope roofs

Current through Register 1525, July 5, 2024
Low-slope membrane roof system metal edge securement, except
				  gutters, shall be designed and installed for wind loads in accordance with
				  Chapter 16 and tested for resistance in accordance with ANSI/SPRI ES-1, except
				  the basic wind speed shall be determined from Figure 1609.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1504 - PERFORMANCE REQUIREMENTS › Subsection 1504.6 - Physical properties

Current through Register 1525, July 5, 2024
Roof coverings installed on low-slope roofs (roof slope <
				  2:12) in accordance with Section 1507 shall demonstrate physical integrity over
				  the working life of the roof based upon 2,000 hours of exposure to accelerated
				  weathering tests conducted in accordance with ASTM G 152, ASTM G 155 or ASTM G
				  154. Those roof coverings that are subject to cyclical flexural response due to
				  wind loads shall not demonstrate any significant loss of tensile strength for
				  unreinforced membranes or breaking strength for reinforced membranes when
				  tested as herein required.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1504 - PERFORMANCE REQUIREMENTS › Subsection 1504.7 - Impact resistance

Current through Register 1525, July 5, 2024
Roof coverings installed on low-slope roofs (roof slope <
				  2:12) in accordance with Section 1507 shall resist impact damage based on the
				  results of tests conducted in accordance with ASTM D 3746, ASTM D 4272, CGSB
				  37-GP-52M or the "Resistance to Foot Traffic Test" in Section 5.5 of FM
				  4470.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1504 - PERFORMANCE REQUIREMENTS › Subsection 1504.8 - Aggregate

Current through Register 1525, July 5, 2024
Aggregate used as surfacing for roof coverings and
				  aggregate, gravel or stone used as ballast shall not be used on the roof of a
				  building located in a hurricane-prone region as defined in Section 1609.2, or
				  on any other building with a mean roof height exceeding that permitted by Table
				  1504.8 based on the exposure category and basic wind speed at the site.
TABLE 1504.8 MAXIMUM ALLOWABLE MEAN ROOF HEIGHT
				  PERMITTED FOR BUILDINGS WITH AGGREGATE ON THE ROOF IN AREAS OUTSIDE A
				  HURRICANE-PRONE REGION
BASIC WIND SPEED FROM FIGURE 1609
(mph)b
MAXIMUM MEAN ROOF HEIGHT (ft)a,
							 c
Exposure category
B
C
D
85
170
60
30
90
110
35
15
95
75
20
NP
100
55
15
NP
105
40
NP
NP
110
30
NP
NP
115
20
NP
NP
120
15
NP
NP
Greater than 120
NP
NP
NP
For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447
							 m/s.
a. Mean roof height as defined in ASCE 7.
b. For intermediate values of basic wind speed, the
								height associated with the next higher value of wind speed shall be used, or
								direct interpolation is permitted.
c. NP = gravel and stone not permitted for any roof
								height.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1505 - FIRE CLASSIFICATION › Subsection 1505.1 - General

Current through Register 1525, July 5, 2024
Roof assemblies shall be divided into the classes defined
				  below. Class A, B and C roof assemblies and roof coverings required to be
				  listed by this section shall be tested in accordance with ASTM E 108 or UL 790.
				  In addition,
fire-retardant-treated wood
roof coverings shall
				  be tested in accordance with ASTM D 2898. The minimum roof coverings installed
				  on buildings shall comply with Table 1505.1 based on the type of construction
				  of the building.
Exception:
Skylights and sloped glazing that
				  comply with Chapter 24 or Section 2610.
TABLE 1505.1a, b MINIMUM
				  ROOF COVERING CLASSIFICATION FOR TYPES OF CONSTRUCTION
IA
IB
IIA
IIB
IIIA
IIIB
IV
VA
VB
B
B
B
Cc
B
Cc
B
B
Cc
For SI: 1 foot = 304.8 mm, 1 square foot = 0.0929 m2.
a. Unless otherwise required in accordance with the
International Wildland-Urban Interface Code
or due to the
								location of the building within a fire district in accordance with Appendix
								D.
b. Nonclassified roof coverings shall be permitted
								on buildings of Group R-3 and Group U occupancies, where there is a minimum
								fire-separation distance of 6 feet measured from the leading edge of the
								roof.
c. Buildings that are not more than two stories
								above grade plane and having not more than 6,000 square feet of projected roof
								area and where there is a minimum 10-foot fire-separation distance from the
								leading edge of the roof to a lot line on all sides of the building, except for
								street fronts or public ways, shall be permitted to have roofs of No. 1 cedar
								or redwood shakes and No. 1 shingles.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1505 - FIRE CLASSIFICATION › Subsection 1505.2 - Class A roof assemblies

Current through Register 1525, July 5, 2024
Class A roof assemblies are those that are effective against
				  severe fire test exposure. Class A roof assemblies and roof coverings shall be
listed
and identified as Class A by an
approved
testing agency. Class A roof assemblies shall be
				  permitted for use in buildings or structures of all types of
				  construction.
Exceptions:
1. Class A roof assemblies include those with
				coverings of brick, masonry or an exposed concrete roof deck.
2. Class A roof assemblies also include
				ferrous or copper shingles or sheets, metal sheets and shingles, clay or
				concrete roof tile or slate installed on noncombustible decks or ferrous,
				copper or metal sheets installed without a roof deck on noncombustible
				framing.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1505 - FIRE CLASSIFICATION › Subsection 1505.3 - Class B roof assemblies

Current through Register 1525, July 5, 2024
Class B roof assemblies are those that are effective against
				  moderate fire-test exposure. Class B roof assemblies and roof coverings shall
				  be
listed
and identified as Class B by an
approved
testing agency.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1505 - FIRE CLASSIFICATION › Subsection 1505.4 - Class C roof assemblies

Current through Register 1525, July 5, 2024
Class C roof assemblies are those that are effective against
				  light fire-test exposure. Class C roof assemblies and roof coverings shall be
listed
and identified as Class C by an
approved
testing agency.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1505 - FIRE CLASSIFICATION › Subsection 1505.5 - Nonclassified roofing

Current through Register 1525, July 5, 2024
Nonclassified roofing is
approved
material
				  that is not
listed
as a Class A, B or C roof
				  covering.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1505 - FIRE CLASSIFICATION › Subsection 1505.6 - Fire-retardant-treated wood shingles and shakes

Current through Register 1525, July 5, 2024
Fire-retardant-treated wood
shakes and
				  shingles shall be treated by impregnation with chemicals by the full-cell
				  vacuum-pressure process, in accordance with AWPA C1. Each bundle shall be
				  marked to identify the manufactured unit and the manufacturer, and shall also
				  be labeled to identify the classification of the material in accordance with
				  the testing required in Section 1505.1, the treating company and the quality
				  control agency.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1505 - FIRE CLASSIFICATION › Subsection 1505.7 - Special purpose roofs

Current through Register 1525, July 5, 2024
Special purpose wood shingle or wood shake roofing shall
				  conform with the grading and application requirements of Section 1507.8 or
				  1507.9. In addition, an underlayment of 5/8-inch (15.9 mm) Type X
				  water-resistant gypsum backing board or gypsum sheathing shall be placed under
				  minimum nominal 1/2-inch-thick (12.7 mm) wood structural panel solid sheathing
				  or 1-inch (25 mm) nominal spaced sheathing.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1506 - MATERIALS › Subsection 1506.1 - Scope

Current through Register 1525, July 5, 2024
The requirements set forth in this section shall apply to
				  the application of roof-covering materials specified herein. Roof coverings
				  shall be applied in accordance with this chapter and the manufacturer's
				  installation instructions. Installation of roof coverings shall comply with the
				  applicable provisions of Section 1507.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1506 - MATERIALS › Subsection 1506.2 - Compatibility of materials

Current through Register 1525, July 5, 2024
Roofs and roof coverings shall be of materials that are
				  compatible with each other and with the building or structure to which the
				  materials are applied.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1506 - MATERIALS › Subsection 1506.3 - Material specifications and physical characteristics

Current through Register 1525, July 5, 2024
Roof-covering materials shall conform to the applicable
				  standards
listed
in this chapter. In the absence of applicable
				  standards or where materials are of questionable suitability, testing by an
approved
agency shall be required by the
building code
				  official
to determine the character, quality and limitations of
				  application of the materials.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1506 - MATERIALS › Subsection 1506.4 - Product identification

Current through Register 1525, July 5, 2024
Roof-covering materials shall be delivered in packages
				  bearing the manufacturer's identifying marks and
approved
testing agency labels required in accordance with Section 1505. Bulk shipments
				  of materials shall be accompanied with the same information issued in the form
				  of a certificate or on a bill of lading by the manufacturer.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.1 - Scope

Current through Register 1525, July 5, 2024
Roof coverings shall be applied in accordance with the
				  applicable provisions of this section and the manufacturer's installation
				  instructions.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.3 - Clay and concrete tile

Current through Register 1525, July 5, 2024
The installation of clay and concrete tile shall comply with
				  the provisions of this section.
1507.3.1
Deck requirements.
Concrete and clay tile shall be installed only over solid sheathing or spaced
				structural sheathing boards.
1507.3.2
Deck slope.
Clay and
				concrete roof tile shall be installed on roof slopes of
				21/2 units vertical in 12
				units horizontal (21-percent slope) or greater. For roof slopes from
				21/2 units vertical in 12
				units horizontal (21-percent slope) to four units vertical in 12 units
				horizontal (33-percent slope), double underlayment application is required in
				accordance with Section 1507.3.3.
1507.3.3
Underlayment.
Unless
				otherwise noted, required underlayment shall conform to: ASTM D 226, Type II;
				ASTM D 2626 or ASTM D 6380, Class M mineral-surfaced roll roofing.
1507.3.3.1
Low-slope roofs.
For
				roof slopes from 21/2 units
				vertical in 12 units horizontal (21-percent slope), up to four units vertical
				in 12 units horizontal (33-percent slope), underlayment shall be a minimum of
				two layers applied as follows:
1. Starting at
				the eave, a 19-inch (483 mm) strip of underlayment shall be applied parallel
				with the eave and fastened sufficiently in place.
2. Starting at the eave, 36-inch-wide (914
				mm) strips of underlayment felt shall be applied overlapping successive sheets
				19 inches (483 mm) and fastened sufficiently in place.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.4 - Metal roof panels

Current through Register 1525, July 5, 2024
The installation of metal roof panels shall comply with the
				  provisions of this section.
1507.4.1
Deck requirements.
Metal roof panel roof coverings shall be
				applied to a solid or closely fitted deck, except where the roof covering is
				specifically designed to be applied to spaced supports.
1507.4.2
Deck slope.
Minimum
				slopes for metal roof panels shall comply with the following:
1. The minimum slope for lapped, nonsoldered
				seam metal roofs without applied lap sealant shall be three units vertical in
				12 units horizontal (25-percent slope).
2. The minimum slope for lapped, nonsoldered
				seam metal roofs with applied lap sealant shall be one-half unit vertical in 12
				units horizontal (4-percent slope). Lap sealants shall be applied in accordance
				with the
approved
manufacturer's installation
				instructions.
3. The minimum slope
				for standing seam of roof systems shall be one-quarter unit vertical in 12
				units horizontal (2-percent slope).
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.5 - Metal roof shingles

Current through Register 1525, July 5, 2024
The installation of metal roof shingles shall comply with
				  the provisions of this section.
1507.5.1
Deck requirements.
Metal roof shingles shall be applied to a solid or closely fitted deck, except
				where the roof covering is specifically designed to be applied to spaced
				sheathing.
1507.5.2
Deck
				slope.
Metal roof shingles shall not be installed on roof slopes below
				three units vertical in 12 units horizontal (25-percent slope).
1507.5.3
Underlayment.
Underlayment shall comply with ASTM D 226, Type I or ASTM D 4869.
1507.5.4
Ice barrier.
In areas
				where there has been a history of ice forming along the eaves causing a backup
				of water, an ice barrier that consists of at least two layers of underlayment
				cemented together or of a self-adhering polymer-modified bitumen sheet shall be
				used in lieu of normal underlayment and extend from the lowest edges of all
				roof surfaces to a point at least 24 inches (610 mm) inside the exterior wall
				line of the building.
Exception:
Detached accessory structures that
				  contain no conditioned floor area.
1507.5.5
Material standards.
Metal roof shingle roof coverings shall comply with Table 1507.4.3(1). The
				materials used for metal-roof shingle roof coverings shall be naturally
				corrosion resistant or provided with corrosion resistance in accordance with
				the standards and minimum thicknesses specified in the standards listed in
				Table 1507.4.3(2).
1507.5.6
Attachment.
Metal roof shingles shall be secured to the roof in
				accordance with the
approved
manufacturer's installation
				instructions.
1507.5.7
Flashing.
Roof valley flashing shall be of corrosion-resistant metal of
				the same material as the roof covering or shall comply with the standards in
				Table 1507.4.3(1). The valley flashing shall extend at least 8 inches (203 mm)
				from the centerline each way and shall have a splash diverter rib not less than
				3/4 inch (19.1 mm) high at
				the flow line formed as part of the flashing. Sections of flashing shall have
				an end lap of not less than 4 inches (102 mm). In areas where the average daily
				temperature in January is 25°F (-4°C) or less or where there is a
				possibility of ice forming along the eaves causing a backup of water, the metal
				valley flashing shall have a 36-inch-wide (914 mm) underlayment directly under
				it consisting of either one layer of underlayment running the full length of
				the valley or a self-adhering polymer-modified bitumen sheet complying with
				ASTM D 1970, in addition to underlayment required for metal roof shingles. The
				metal valley flashing underlayment shall be solidly cemented to the roofing
				underlayment for roof slopes under seven units vertical in 12 units horizontal
				(58-percent slope) or self-adhering polymer-modified bitumen sheet shall be
				installed.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.6 - Mineral-surfaced roll roofing

Current through Register 1525, July 5, 2024
The installation of mineral-surfaced roll roofing shall
				  comply with this section.
1507.6.1
Deck requirements.
Mineral-surfaced roll roofing shall be
				fastened to solidly sheathed roofs.
1507.6.2
Deck slope.
Mineral-surfaced roll roofing shall not be applied on roof slopes below one
				unit vertical in 12 units horizontal (8-percent slope).
1507.6.3
Underlayment.
Underlayment shall comply with ASTM D 226, Type I or ASTM D 4869.
1507.6.4
Ice barrier.
In areas
				where there has been a history of ice forming along the eaves causing a backup
				of water, an ice barrier that consists of at least two layers of underlayment
				cemented together or of a self-adhering polymer-modified bitumen sheet shall be
				used in lieu of normal underlayment and extend from the lowest edges of all
				roof surfaces to a point at least 24 inches (610 mm) inside the exterior wall
				line of the building.
Exception:
Detached accessory structures that
				  contain no conditioned floor area.
1507.6.5
Material standards.
Mineral-surfaced roll roofing shall conform to ASTM D 3909 or ASTM D
				6380.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.7 - Slate shingles

Current through Register 1525, July 5, 2024
The installation of slate shingles shall comply with the
				  provisions of this section.
1507.7.1
Deck requirements.
Slate shingles shall be fastened to solidly
				sheathed roofs.
1507.7.2
Deck slope.
Slate shingles shall only be used on slopes of four units
				vertical in 12 units horizontal (4:12) or greater.
1507.7.3
Underlayment.
Underlayment shall comply with ASTM D 226, Type I or ASTM D 4869.
1507.7.4
Ice barrier.
In areas
				where the average daily temperature in January is 25°F (-4°C) or less
				or where there is a possibility of ice forming along the eaves causing a backup
				of water, an ice barrier that consists of at least two layers of underlayment
				cemented together or of a self-adhering polymer-modified bitumen sheet shall
				extend from the lowest edges of all roof surfaces to a point at least 24 inches
				(610 mm) inside the exterior wall line of the building.
Exception:
Detached accessory structures that
				  contain no conditioned floor area.
1507.7.5
Material standards.
Slate shingles shall comply with ASTM C 406.
1507.7.6
Application.
Minimum
				headlap for slate shingles shall be in accordance with Table 1507.7.6. Slate
				shingles shall be secured to the roof with two fasteners per slate.
TABLE 1507.7.6 SLATE SHINGLE HEADLAP
SLOPE
HEADLAP
(inches)
4:12 < slope < 8:12
4
8:12 < slope < 20:12
3
Slope >= 20:12
2
For SI: 1 inch = 25.4 mm.
1507.7.7
Flashing.
Flashing and
				counterflashing shall be made with sheet metal. Valley flashing shall be a
				minimum of 15 inches (381 mm) wide. Valley and flashing metal shall be a
				minimum uncoated thickness of 0.0179-inch (0.455 mm) zinc-coated G90. Chimneys,
				stucco or brick walls shall have a minimum of two plies of felt for a cap
				flashing consisting of a 4-inch-wide (102 mm) strip of felt set in plastic
				cement and extending 1 inch (25 mm) above the first felt and a top coating of
				plastic cement. The felt shall extend over the base flashing 2 inches (51
				mm).
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.9 - Wood shakes

Current through Register 1525, July 5, 2024
The installation of wood shakes shall comply with the
				  provisions of this section and Table 1507.8.
1507.9.1
Deck requirements.
Wood
				shakes shall only be used on solid or spaced sheathing. Where spaced sheathing
				is used, sheathing boards shall not be less than 1-inch by 4-inch (25 mm by 102
				mm) nominal dimensions and shall be spaced on centers equal to the weather
				exposure to coincide with the placement of fasteners. Where 1-inch by 4-inch
				(25 mm by 102 mm) spaced sheathing is installed at 10 inches (254 mm) o.c.,
				additional 1-inch by 4-inch (25 mm by 102 mm) boards shall be installed between
				the sheathing boards.
1507.9.1.1
Solid
				sheathing required.
Solid sheathing is required in areas where the
				average daily temperature in January is 25°F (-4°C) or less or where
				there is a possibility of ice forming along the eaves causing a backup of
				water.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.10 - Built-up roofs

Current through Register 1525, July 5, 2024
The installation of built-up roofs shall comply with the
				  provisions of this section.
1507.10.1
Slope.
Built-up roofs shall have a design slope of a minimum of
				one-fourth unit vertical in 12 units horizontal (2-percent slope) for drainage,
				except for coal-tar built-up roofs that shall have a design slope of a minimum
				one-eighth unit vertical in 12 units horizontal (1-percent slope).
1507.10.2
Material standards.
Built-up roof covering materials shall comply with the standards in Table
				1507.10.2.
TABLE 1507.10.2 BUILT-UP ROOFING MATERIAL
				  STANDARDS
MATERIAL STANDARD
STANDARD
Acrylic coatings used in roofing
ASTM D 6083
Aggregate surfacing
ASTM D 1863
Asphalt adhesive used in roofing
ASTM D 3747
Asphalt cements used in roofing
ASTM D 3019; D 2822;
D 4586
Asphalt-coated glass fiber base sheet
ASTM D 4601
Asphalt coatings used in roofing
ASTM D1227; D 2823;
D 4479
Asphalt glass felt
ASTM D 2178
Asphalt primer used in roofing
ASTM D 41
Asphalt-saturated and asphalt-coated organic felt base
							 sheet
ASTM D 2626
Asphalt-saturated organic felt (perforated)
ASTM D 226
Asphalt used in roofing
ASTM D 312
Coal-tar cements used in roofing
ASTM D 4022; D 5643
Coal-tar saturated organic felt
ASTM D 227
Coal-tar pitch used in roofing
ASTM D 450; Type I or II
Coal-tar primer used in roofing, dampproofing and
							 waterproofing
ASTM D 43
Glass mat, coal tar
ASTM D 4990
Glass mat, venting type
ASTM D 4897
Mineral-surfaced inorganic cap sheet
ASTM D 3909
Thermoplastic fabrics used in roofing
ASTM D 5665, D 5726
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.11 - Modified bitumen roofing

Current through Register 1525, July 5, 2024
The installation of modified bitumen roofing shall comply
				  with the provisions of this section.
1507.11.1
Slope.
Modified
				bitumen membrane roofs shall have a design slope of a minimum of one-fourth
				unit vertical in 12 units horizontal (2-percent slope) for drainage.
1507.11.2
Material standards.
Modified bitumen roof coverings shall comply with CGSB 37-GP-56M, ASTM D
				6162, ASTM D 6163, ASTM D 6164, ASTM D 6222, ASTM D 6223, ASTM D 6298 or ASTM D
				6509.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.12 - Thermoset single-ply roofing

Current through Register 1525, July 5, 2024
The installation of thermoset single-ply roofing shall
				  comply with the provisions of this section.
1507.12.1
Slope.
Thermoset
				single-ply membrane roofs shall have a design slope of a minimum of one-fourth
				unit vertical in 12 units horizontal (2-percent slope) for drainage.
1507.12.2
Material standards.
Thermoset single-ply roof coverings shall comply with ASTM D 4637, ASTM D 5019
				or CGSB 37-GP-52M.
1507.12.3
Ballasted thermoset low-slope roofs.
Ballasted thermoset low-slope roofs
				(roof slope < 2:12) shall be installed in accordance with this section and
				Section 1504.4. Stone used as ballast shall comply with ASTM D 448.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.13 - Thermoplastic single-ply roofing

Current through Register 1525, July 5, 2024
The installation of thermoplastic single-ply roofing shall
				  comply with the provisions of this section.
1507.13.1
Slope.
Thermoplastic
				single-ply membrane roofs shall have a design slope of a minimum of one-fourth
				unit vertical in 12 units horizontal (2-percent slope).
1507.13.2
Material standards.
Thermoplastic single-ply roof coverings shall comply with ASTM D 4434, ASTM D
				6754, ASTM D 6878 or CGSB CAN/CGSB 37-54.
1507.13.3
Ballasted thermoplastic
				low-slope roofs.
Ballasted thermoplastic low-slope roofs (roof slope
				< 2:12) shall be installed in accordance with this section and Section
				1504.4. Stone used as ballast shall comply with ASTM D448.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.14 - Sprayed polyurethane foam roofing

Current through Register 1525, July 5, 2024
The installation of sprayed polyurethane foam roofing shall
				  comply with the provisions of this section.
1507.14.1
Slope.
Sprayed
				polyurethane foam roofs shall have a design slope of a minimum of one-fourth
				unit vertical in 12 units horizontal (2-percent slope) for drainage.
1507.14.2
Material standards.
Spray-applied polyurethane foam insulation shall comply with Type III or IV as
				defined in ASTM C 1029.
1507.14.3
Application.
Foamed-in-place roof insulation shall be installed
				in accordance with the manufacturer's instructions. A liquid-applied protective
				coating that complies with Section 1507.15 shall be applied no less than 2
				hours nor more than 72 hours following the application of the foam.
1507.14.4
Foam plastics.
Foam
				plastic materials and installation shall comply with Chapter 26.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.15 - Liquid-applied coatings

Current through Register 1525, July 5, 2024
The installation of liquid-applied coatings shall comply
				  with the provisions of this section.
1507.15.1
Slope.
Liquid-applied
				roofs shall have a design slope of a minimum of one-fourth unit vertical in 12
				units horizontal (2-percent slope).
1507.15.2
Material standards.
Liquid-applied roof coatings shall comply with ASTM C 836, ASTM C 957, ASTM D
				1227 or ASTM D 3468, ASTM D 6083, ASTM D 6694 or ASTM D 6947.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1507 - REQUIREMENTS FOR ROOF COVERINGS › Subsection 1507.16 - Roof gardens and landscaped roofs

Current through Register 1525, July 5, 2024
Roof gardens and landscaped roofs shall comply with the
				  requirements of this chapter and Sections 1607.11.2.2 and
				  1607.11.3.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1508 - ROOF INSULATION › Subsection 1508.1 - General

Current through Register 1525, July 5, 2024
The use of above-deck thermal insulation shall be permitted
				  provided such insulation is covered with an
approved
roof
				  covering and passes the tests of FM 4450 or UL 1256 when tested as an
				  assembly.
Exceptions:
1. Foam plastic roof insulation shall conform
				to the material and installation requirements of Chapter 26.
2. Where a concrete roof deck is used and the
				above-deck thermal insulation is covered with an
approved
roof
				covering.
1508.1.1
Cellulosic
				fiberboard.
Cellulosic fiberboard roof insulation shall conform to the
				material and installation requirements of Chapter 23.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1508 - ROOF INSULATION › Subsection 1508.2 - Material standards

Current through Register 1525, July 5, 2024
Above-deck thermal insulation board shall comply with the
				  standards in Table 1508.2.
TABLE 1508.2 MATERIAL STANDARDS FOR ROOF
				  INSULATION
Cellular glass board
ASTM C 552
Composite boards
ASTM C 1289, Type III, IV, V or VI
Expanded polystyrene
ASTM C 578
Extruded polystyrene board
ASTM C 578
Perlite board
ASTM C 728
Polyisocyanurate board
ASTM C 1289, Type I or Type II
Wood fiberboard
ASTM C 208
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1509 - ROOFTOP STRUCTURES › Subsection 1509.3 - Tanks

Current through Register 1525, July 5, 2024
Tanks having a capacity of more than 500 gallons (2
				  m3) placed in or on a building shall be supported on
				  masonry, reinforced concrete, steel or Type IV construction provided that,
				  where such supports are located in the building above the lowest
story
, the support shall be fire-resistance rated as required
				  for Type IA construction.
1509.3.1
Valve.
Such tanks shall have in the bottom or on the side near
				the bottom, a pipe or outlet, fitted with a suitable quick opening valve for
				discharging the contents in an emergency through an adequate drain.
1509.3.2
Location.
Such tanks
				shall not be placed over or near a line of stairs or an elevator shaft, unless
				there is a solid roof or floor underneath the tank.
1509.3.3
Tank cover.
Unenclosed
				roof tanks shall have covers sloping toward the outer edges.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1509 - ROOFTOP STRUCTURES › Subsection 1509.4 - Cooling towers

Current through Register 1525, July 5, 2024
Cooling towers in excess of 250 square feet (23.2
				  m2) in base area or in excess of 15 feet (4572 mm)
				  high where located on building roofs more than 50 feet (15 240 mm) high shall
				  be of noncombustible construction. Cooling towers shall not exceed one-third of
				  the supporting roof area.
Exception:
Drip boards and the enclosing
				  construction of wood not less than 1 inch (25 mm) nominal thickness, provided
				  the wood is covered on the exterior of the tower with noncombustible
				  material.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1509 - ROOFTOP STRUCTURES › Subsection 1509.5 - Towers, spires, domes and cupolas

Current through Register 1525, July 5, 2024
Any tower, spire, dome or cupola shall be of a type of
				  construction not less in
fire-resistance rating
than required
				  for the building to which it is attached, except that any such tower, spire,
				  dome or cupola that exceeds 85 feet (25 908 mm) in height above
grade
				  plane
, exceeds 200 square feet (18.6 m2) in
				  horizontal area or is used for any purpose other than a belfry or an
				  architectural embellishment shall be constructed of and supported on Type I or
				  II construction.
1509.5.1
Noncombustible construction required.
Any tower, spire, dome or cupola
				that exceeds 60 feet (18 288 mm) in height above the highest point at which it
				comes in contact with the roof, or that exceeds 200 square feet (18.6
				m2) in area at any horizontal section, or which is
				intended to be used for any purpose other than a belfry or architectural
				embellishment, shall be entirely constructed of and supported by noncombustible
				materials. Such structures shall be separated from the building below by
				construction having a fire-resistance rating of not less than 1.5 hours with
				openings protected with a minimum 1.5-hour fire protection rating. Structures,
				except aerial supports 12 feet (3658 mm) high or less, flagpoles, water tanks
				and cooling towers, placed above the roof of any building more than 50 feet (15
				240 mm) in building height, shall be of noncombustible material and shall be
				supported by construction of noncombustible material.
1509.5.2
Towers and spires.
Towers and spires where enclosed shall have exterior walls as required for the
				building to which they are attached. The roof covering of spires shall be of a
				class of roof covering as required for the main roof of the rest of the
				structure.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1510 - REROOFING › Subsection 1510.1 - General

Current through Register 1525, July 5, 2024
Materials and methods of application used for recovering or
				  replacing an existing roof covering shall comply with the requirements of
				  Chapter 15.
Exception:
Reroofing shall not be required to
				  meet the minimum design slope requirement of one-quarter unit vertical in 12
				  units horizontal (2-percent slope) in Section 1507 for roofs that provide
				  positive roof drainage.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1510 - REROOFING › Subsection 1510.2 - Structural and construction loads

Current through Register 1525, July 5, 2024
Structural roof components shall be capable of supporting
				  the roof-covering system and the material and equipment loads that will be
				  encountered during installation of the system.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1510 - REROOFING › Subsection 1510.3 - Recovering versus replacement

Current through Register 1525, July 5, 2024
New roof coverings shall not be installed without first
				  removing all existing layers of roof coverings down to the roof deck where any
				  of the following conditions occur:
1.
				Where the existing roof or roof covering is water soaked or has deteriorated to
				the point that the existing roof or roof covering is not adequate as a base for
				additional roofing.
2. Where the
				existing roof covering is wood shake, slate, clay, cement or asbestos-cement
				tile.
3. Where the existing roof
				has two or more applications of any type of roof covering.
Exceptions:
1. Complete and separate roofing systems,
				such as standing-seam metal roof systems, that are designed to transmit the
				roof loads directly to the building's structural system and that do not rely on
				existing roofs and roof coverings for support, shall not require the removal of
				existing roof coverings.
2. Metal
				panel, metal shingle and concrete and clay tile roof coverings shall be
				permitted to be installed over existing wood shake roofs when applied in
				accordance with Section 1510.4.
3.
				The application of a new protective coating over an existing spray polyurethane
				foam roofing system shall be permitted without tear-off of existing roof
				coverings.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1510 - REROOFING › Subsection 1510.4 - Roof recovering

Current through Register 1525, July 5, 2024
Where the application of a new roof covering over wood
				  shingle or shake roofs creates a combustible concealed space, the entire
				  existing surface shall be covered with gypsum board, mineral fiber, glass fiber
				  or other
approved
materials securely fastened in
				  place.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1510 - REROOFING › Subsection 1510.5 - Reinstallation of materials

Current through Register 1525, July 5, 2024
Existing slate, clay or cement tile shall be permitted for
				  reinstallation, except that damaged, cracked or broken slate or tile shall not
				  be reinstalled. Existing vent flashing, metal edgings, drain outlets, collars
				  and metal counterflashings shall not be reinstalled where rusted, damaged or
				  deteriorated. Aggregate surfacing materials shall not be
				  reinstalled.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 15 - Roof Assemblies and Rooftop Structures › Section 1510 - REROOFING › Subsection 1510.6 - Flashings

Current through Register 1525, July 5, 2024
Flashings shall be reconstructed in accordance with
approved
manufacturer's installation instructions. Metal
				  flashing to which bituminous materials are to be adhered shall be primed prior
				  to installation.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 16 - Structural Design › Section 1604 - GENERAL DESIGN REQUIREMENTS › Subsection 1604.1 - General

Current through Register 1525, July 5, 2024
Building, structures and parts thereof shall be designed and
				  constructed in accordance with strength design,
load and resistance
				  factor design
,
allowable stress design
, empirical
				  design or conventional construction methods, as permitted by the applicable
				  material chapters.
Code of Massachusetts Regulations › 780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS › Chapter 16 - Structural Design › Section 1604 - GENERAL DESIGN REQUIREMENTS › Subsection 1604.2 - Strength

Current through Register 1525, July 5, 2024
Buildings and other structures, and parts thereof, shall be
				  designed and constructed to support safely the factored loads in load
				  combinations defined in this code without exceeding the appropriate strength
				  limit states for the materials of construction. Alternatively, buildings and
				  other structures, and parts thereof, shall be designed and constructed to
				  support safely the
nominal loads
in load combinations defined
				  in this code without exceeding the appropriate specified allowable stresses for
				  the materials of construction.
Loads and forces for occupancies or uses not covered in this
				  chapter shall be subject to the approval of the
building
				  official
.