Construction Performance Guidelines
ASPHALT SHINGLES EITHER DO NOT OVERHANG THE EDGE OF THE ROOF OR HANG OVER TOO FAR
Asphalt shingles shall overhang roof edges by not less than 12 mm according to the Building Code; they shall not overhang the roof edge to the extent that they curl.
One-Year - Work and Materials
Shingle overhangs not meeting the acceptable condition shall be repaired.
The edge of the roof includes the entire perimeter of the roof including gables.