Installation Instructions

StormMaster Shake GENERAL INSTRUCTIONS
Atlas Roofing
Closed Cut Valley: Over felt underlayment or WeatherMaster® Granular Underlayment, apply a
36" wide mineral surface asphalt roll roofing (with granule side up) or smooth asphalt roll roofing
centered in the valley, nailing 2" from outer edges only. Apply all shingles on one side of valley and
across center of valley, a minimum of 12". Nail a minimum of 6" away from the centerline of the
valley on the unshingled side and strike a chalk line 2" from the center line on the un-shingled side.
Apply shingles on the unshingled side up to the chalk line and trim. Do not cut the underlying
shingle. Cut upper corners of the shingle, cement and nail. See Diagram #2.
8.) FASTENING
Placement of nails is critical to overall performance. High nail placement can result in separation of
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