Roof Layer In New Construction

The roof decking acts as a unifying structure by tying the trusses joists together.

Roof layer in new construction.

The material used for decking varies but most homes have plywood or osb sheets. Underlayment is usually felt or fiberglass paper that covers the entire roof deck. Decking wood sheathing the decking is the base on which everything else is laid. Ice water barrier this self adhering water proof and self sealing membrane is applied to the roof deck.

Each layer has a specific purpose that when combined with the other components provides protection to your home. Nailed to the trusses or rafters. Also called sheathing the roof deck is the layer installed over the framing and provides the base on which everything else is laid. This synthetic layer which replaces felt paper covers the entire roof deck and is the second line of defense against leaks after the shingles.

Other materials such as corrugated metal reinforced concrete polystyrene and double tee are also used. It provides structure by tying the trusses and joists together. It s usually a peel and stick product that adheres directly to the roof deck. You can usually see the underside of plywood decking from the attic.

Water shield is the next roofing layer that creates a water proof barrier where ice or water can buildup near the roof eaves. Roof decking is typically 7 16 and comes in 4 x8 sheets. 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. 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.