Section 510-RICR-00-00-2.11 - Chapter 9R905.2.6 Delete section R905.2.6 and substitute the following:R905.2.6 Attachment. Asphalt strip shingles shall have a minimum of six (6) fasteners per shingle.
Exceptions:
1. Where the roof slope exceeds twenty (20) units vertical in twelve (12) units horizontal (20:12), special fastening details may be required by the manufacturer.2. Fastening systems tested by the manufacturer to ASTM D3161 modified to use a wind speed of one hundred ten (110) MPH shall be permitted to be installed in any wind zone.R905.2.8.2 #3 Delete and substitute the following:R905.2.8.2 #3 3. For closed valleys (valley covered with shingles), valley lining of one ply of smooth roll roofing complying with ASTM D224 Type II or Type III and at least thirty-six inches (36") (914 mm) wide or valley lining as described in Items 1 and 2 above shall be permitted. Specialty underlayment complying with ASTM D 1970 may be used in lieu of the lining material. Other valley lining systems and techniques acceptable to the shingle manufacturer shall be approved by the Building Official.510 R.I. Code R. 510-RICR-00-00-2.11
Amended effective8/1/2019
Amended effective 2/1/2022