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 1507.2 - Asphalt shingles

Current through Register 1525, July 5, 2024
The installation of asphalt shingles shall comply with the
				  provisions of this section.
1507.2.1
Deck requirements.
Asphalt shingles shall be fastened to solidly
				sheathed decks.
1507.2.2
Slope.
Asphalt shingles shall only be used on roof slopes of two units
				vertical in 12 units horizontal (17-percent slope) or greater. For roof slopes
				from two units vertical in 12 units horizontal (17-percent slope) up to four
				units vertical in 12 units horizontal (33-percent slope), double underlayment
				application is required in accordance with Section 1507.2.8.
1507.2.3
Underlayment.
Unless
				otherwise noted, required underlayment shall conform to ASTM D 226, Type I,
				ASTM D 4869, Type I, or ASTM D 6757.
1507.2.4
Self-adhering polymer modified
				bitumen sheet.
Self-adhering polymer modified bitumen sheet shall comply
				with ASTM D 1970.
1507.2.5
Asphalt shingles.
Asphalt shingles shall comply with ASTM D 225 or
				ASTM D 3462.
1507.2.6
Fasteners.
Fasteners for asphalt shingles shall be galvanized,
				stainless steel, aluminum or copper roofing nails, minimum 12 gage [0.105 inch
				(2.67 mm)] shank with a minimum
				3/8 inch-diameter (9.5 mm)
				head, of a length to penetrate through the roofing materials and a minimum of
				3/4 inch (19.1 mm) into the
				roof sheathing. Where the roof sheathing is less than
				3/4 inch (19.1 mm) thick, the
				nails shall penetrate through the sheathing. Fasteners shall comply with ASTM F
				1667.
1507.2.7
Attachment.
Asphalt shingles shall have the minimum number of fasteners
				required by the manufacturer, but not less than four fasteners per strip
				shingle or two fasteners per individual shingle. Where the roof slope exceeds
				21 units vertical in 12 units horizontal (21:12), shingles shall be installed
				as required by the manufacturer.
1507.2.7.1
Wind resistance.
Asphalt shingles shall be tested in accordance
				with ASTM D 7158. Asphalt shingles shall meet the classification requirements
				of Table 1507.2.7.1(1) for the appropriate maximum basic wind speed. Asphalt
				shingle packaging shall bear a label to indicate compliance with ASTM D 7158
				and the required classification in Table 1507.2.7.1(1).
Exception:
Asphalt shingles not included in the
				  scope of ASTM D 7158 shall be tested and labeled to indicate compliance with
				  ASTM D 3161 and the required classification in Table 1507.2.7.1(2).
TABLE 1507.2.7.1(1) CLASSIFICATION OF ASPHALT ROOF
				  SHINGLES PER ASTM D 7158a
MAXIMUM BASIC WIND SPEED (mph) FROM FIGURE
							 1609
CLASSIFICATION
REQUIREMENT
85
D, G or H
90
D, G or H
100
G or H
110
G or H
120
G or H
130
H
140
H
150
H
For SI: 1 foot = 304.8 mm, 1 mile per hour = 0.447
								m/s.
a. The standard calculations contained in ASTM D
								7158 assume exposure category B or C and building height of 60 feet (18 288 mm)
								or less. Additional calculations are required for conditions outside of these
								assumptions.
TABLE 1507.2.7.1(2) CLASSIFICATION OF ASPHALT SHINGLES
				  PER ASTM D 3161
MAXIMUM BASIC WIND SPEED (mph) FROM FIGURE
							 1609
CLASSIFICATION
REQUIREMENT
85
A, D or F
90
A, D or F
100
A, D or F
110
F
120
F
130
F
140
F
150
F
For SI: 1 mile per hour = 0.447 m/s.