Atlas Steep-Slope Shingles: Fasteners and Hand Sealing
Bulletin date: not stated in source
Atlas requires special fastening and hand sealing for slopes exceeding 60 degrees. The bulletin distinguishes architectural and three-tab adhesive placement and warns against excessive roofing cement, which can cause blistering
Atlas technical bulletin: Application of Asphalt Shingles on Steep Slopes and Mansard Construction.
What this means for your roof
Atlas requires special fastening and hand sealing for slopes exceeding 60 degrees. The bulletin distinguishes architectural and three-tab adhesive placement and warns against excessive roofing cement, which can cause blistering. A steep roof needs the appropriate detail rather than an ordinary-slope installation repeated unchanged.
A useful question for your contractor
Will the crew use the steep-slope fastening and hand-sealing requirements?
Ask for the answer to be tied to the actual roof condition and the exact product being installed. Keep the agreed repair or installation detail with your estimate and project photos.
Bulletin dated: not stated in source. The date shown identifies the manufacturer document used for this summary.
Read Atlas: Application of Asphalt Shingles on Steep Slopes and Mansard Construction
This homeowner summary explains the cited bulletin. The complete manufacturer document and current product instructions govern the installation details. A requirement for one manufacturer or product should not be transferred to another without checking.