Asphaltic shingles layout, alignment and placement of mechanical attachment shall be in compliance with the product approval, and shall be installed in accordance with RAS 115.
Installation of all asphaltic shingles shall be limited to a roof mean height of 33 feet (10 m), unless otherwise specifically noted in the product approval.
The asphaltic shingle product approval shall meet the following minimum requirements.
Asphaltic shingles shall be installed in compliance with the product approval, but in no case with less than six approved roofing nails or approved fastening devices which penetrate through the thickness of sheathing or wood plank a minimum of 3/16 inch (4.8 mm) or penetrate into a 1 inch (25 mm) or greater thickness of lumber a minimum of 1 inch (25 mm), except where architectural appearance is to be preserved, in which case a minimum 3/4-inch (19 mm) ring shank roofing nail may be used.
Intersections, eaves, rakes, valleys, gable ends, and the starter course of asphaltic shingles shall be set in an 8-inch (203 mm) wide bed of approved cold adhesive or roofing cement. Application of adhesive or cement shall be in compliance with the application instructions of the Product Approval. Shingles shall not extend more than 1/4 inch (6.4 mm) beyond the eave drip.