Use this 3 part SimpleSpecs™ master specification to specify asphalt shingles and underlayment.
Two types of shingles are available; three tab and laminated. Laminated shingles provide a thicker look that can resemble wood or slate shingles, while three tab shingles are flat and uniform in appearance. Verify available types with specific manufacturers.
Underlayment requirements vary depending on roof slope, from a single layer of roofing felt to rubberized asphalt and synthetic. Similarly, valley construction varies depending on slope.
For information regarding selection and detailing of asphalt shingles refer to the National Roofing Contractors Association (NRCA) Roofing Manual: Steep-Slope Roof Systems, available from NRCA at www.nrca.net.
Related SimpleSpecs™ master specification: