Installation Instructions

GlassMaster General Instructions - Ardmore, OK & Hampton, GA
Atlas Roofing
8. FASTENING
Placement of fasteners is critical to overall performance. New Roofing Application (first shingle
layer): 4 nails are required per shingle to maintain wind performance. The nails are to be located
5/8" above the cutouts (5 5/8" above the bottom edge of the shingle) and 1" in from each side of
the shingles as illustrated in Diagram #4.
All nails must be driven straight, with the heads flush to the shingle surface, never cutting into the
shingle. Nails must not be exposed (visible) on the finished roof. Nails must be 11 or 12 gauge;
corrosion-resistant roofing nails with 3/8" minimum heads and must be a minimum of 1-1/4" long.
Atlas recommends 2" nails for a roof over. However, if coils with 2" nails are not available in your
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