Chemical & Material
Roofing Underlying Materials
A roofing underlying materials is the layer of waterproofing material that goes on your roof. It’s laid under the shingles or roofing materials as the last line of defense against inclement weather. More commonly known as “felt paper,” roof underlayment is mainly a roll of paper or fiberglass that is covered by asphalt and other waterproofing materials.
- Types
- Asphalt-Saturated Felt Roofing Underlying · Modified Asphalt Roofing Underlying · Non-Bitumen Synthetic Roofing Underlying
- Applications
- Residential · Non-Residential
5 editions23 December 2025