Roof Layer In New Construction

Ice water barrier this self adhering water proof and self sealing membrane is applied to the roof deck.

Roof layer in new construction.

Each layer has a specific purpose that when combined with the other components provides protection to your home. Roof decking is typically 7 16 and comes in 4 x8 sheets. It provides structure by tying the trusses and joists together. The roof deck is the roof layer also called sheathing that is installed between the trusses joists and underlayment layer in a typical roof install.

The roof decking is the layer of plywood or o s b. Nailed to the trusses or rafters. The material used for decking varies but most homes have plywood or osb sheets. Other materials such as corrugated metal reinforced concrete polystyrene and double tee are also used.

Roof deck prep and repair. It s usually a peel and stick product that adheres directly to the roof deck. Underlayment is usually felt or fiberglass paper that covers the entire roof deck. The roof decking acts as a unifying structure by tying the trusses joists together.

If you re tearing off old roofing the roofer can look for damage that needs to be repaired once the deck is bare. Water shield is the next roofing layer that creates a water proof barrier where ice or water can buildup near the roof eaves. The roof is a system composed of layers of different materials that work together to keep wind and weather out of your home. Most often made out of plywood this roof layer is installed over the framing in a typical roof install.

3 starter shingles a narrow row of asphalt roofing the starter strip is nailed to the perimeter of the roof with a bead of adhesive on top that grips the underside of the first course of shingles keeping them in place during high winds. Most roof decking is made from sheets of plywood. You can usually see the underside of plywood decking from the attic.