How To Install Synthetic Roof Underlayment Deck

If necessary adjust how the material ls aligned to keep it hanging over the decking material.

How to install synthetic roof underlayment deck.

It resists moisture intrusion while still allowing the roof to breathe roof felt consists of a heavy duty. Smooth out the underlay to prevent any bumps. Synthetic underlayment also provides better traction for roofers than felt underlayment in both wet and dry conditions making it a safer product to work with during installation. It has exceptional dimensional stability compared to standard felt underlayment.

Felt underlayment can wrinkle when it becomes wet and telegraph those wrinkles through to the shingles applied over it. The underlayment adds a layer of essential protection between roofing shingles and the roof deck. For many years traditional roofing felt was the most popular underlayment. Ideally the roof covering material would be installed as soon as possible but in reality the roof may be protected by only the underlayment for days weeks or sometimes months.

But what some may not know is there s another layer of protection directly on top of the roof deck and under the roof covering that performs a critical role in protecting your home from moisture damage. Step 4 rolling the underlayment. Install the underlayment along the roof decking. Install drip edge at the roof eave edges.

Roof underlayment prevents the roof deck from being exposed to the elements before or while the roofing material is being installed. Synthetic roofing underlayment is to be laid horizontally parallel to eave with printed anti slip side up starting at the bottom of the lowest roof eave with a 1 5 underlayment overhang at the eave covering the pre installed eave drip edge. They also protect the wood roof deck during installation. Step 5 nailing the underlayment.