Fastener Schedule for Roofing

Asphalt Shingles

Fasteners for asphalt shingles must be galvanized steel, stainless steel, aluminum, or copper roofing nails, minimum 12 gauge shank with a minimum 3/8 inch diameter head. They must be long enough to penetrate through the roofing materials and a minimum of ¾ inch into roof sheathing. When roof sheathing is less than ¾ inch thick, the fastener must penetrate through the sheathing.

Nailing, Properly Driven and Improperly Driven

Mineral-Surfaced Roll Roofing

Roll roofing must be installed in accordance with the manufacturer's installation instructions.

Wood Shingles

Fasteners for wood shingles must be corrosion-resistant with a minimum penetration of ½ inch into the sheathing. For sheathing less than ½ inch thickness, the fastener must extend through the sheathing. A minimum of two fasteners per shingle are required.

Wood Shakes

Fasteners for wood shakes must be corrosion-resistant with a minimum penetration of ½ inch into the sheathing. For sheathing less than ½inch thickness, the fastener must extend through the sheathing. A minimum of two fasteners per shake are required.