Roof Asphalt Shingles Requirements

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 0 375 inch diameter 9 5 mm head of a length to penetrate through the roofing materials and a minimum of 0 75 inch 19 1 mm thick the nails shall penetrate through the sheathing.

Roof asphalt shingles requirements. Fortunately the requirements are quite accommodating. Installation temperature requirements for asphalt shingle roofs ideally shingles should be installed at temperatures ranging from 40 f to 85 f. Above 85 f it is easy to tear the shingles or mar the granular coating. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

Imbed each step flashing in a 75 mm 3 wide application of asphaltic plastic cement and nail in place. Below 40 f shingles are brittle and crack easily when hammered or bent. Asphalt shingles continue to be the most widely installed roof covering option in north america. They won t be appropriate for all roofs.

There are two simple rules to follow. If you re having asphalt shingles put on your roof you will have to have a minimum slope. Asphalt shingles do require that you have a minimum pitch to your roof. A 4 12 roof slope means the roof rises 4 feet for every 12 feet of horizontal roof span.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.