This video explains how roofing underlayment is essential to the roof installation process and how it works. It's the first layer that goes down before shingles and helps protect against leaks, wind damage, and fire. Roofing underlayment helps preserve the life of your roof and strengthens your home's structure. In addition to preventing water penetration at the joints, it provides a smooth surface for roof installers to apply asphalt-saturated fiberglass mat or asphalt roll roofing.
Some types of underlayment can also offer additional protection against ice damming by raising the temperature at which melting occurs.
Roofing underlayment comes in rolls or squares with provisions to allow roof installers to cut them to size with a utility knife. Next, roof installers cut holes in old shingles or tiles to insert plywood or other materials into these areas. Afterward, they will caulk around the edges to ensure no gaps between the new and old materials.
These professionals specialize in installing asphalt shingles and similar products on residential or commercial buildings. Other roofing materials may include slate, clay tile, or metal panels made of aluminum or copper. Each roofing material requires different types of installation techniques.
