There are six generic classifications of steep-slope roof coverings. Click on a roof covering type for more information.
- Asphalt shingles
- Clay tile and concrete tile
- Metal roof systems for steep-slope applications
- Wood shakes and wood shingles
Steep-slope roof systems are typically composed of individual pieces or components installed in shingle fashion. Steep-slope roof assemblies often consist of three primary parts:
- Roof deck — A roof deck is the structural substrate, and usually is a wood-based material such as plywood or oriented strand board (OSB).
- Underlayment — Underlayment provides temporary protection until a roof covering is installed, providing a secondary weatherproofing barrier. Sometimes underlayment is referred to as “felt” or “paper.”
- Roof covering — The roof covering is the external water-shedding material.