Use Roll Roofing Instead Of Grace

Single coverage roll roofing usually has a 2 inch lap with exposed nails.

Use roll roofing instead of grace.

Coverage white fiberglass mineral surfaced cap roll roofing. Also they make 3 4 roofing nails fyi. As far as grace ice and water i did use it under shingles on the low pitch patio roofs of a retirement community re roof project i did 10 years ago 1 1 2 on 12 pitch. Rolled roofing material is often used on roofs that are low sloped.

Gaf liberty 3 ft. If possible install roll roofing over a smooth plywood deck either perpendicular or parallel to the slope. Looked just like vycor without the printing. The roofing should overhang the eaves by inch except where you install drip edge flashing on top of the roofing along the rake edge.

Applying roofing felt first will better protect the sheathing against condensation as well as against leaking. I uise grace for underlayment and polyglass for overlay because that is what is available. An underlayment of felt roofing is optional. Roll roofing is different.

If the roof is sloped you can use the exposed nail method. A typical roof has three layers a felt layer and two layers of overlapping shingles. It was about 36 bucks for a one square roll back then. Otherwise the safest minimum pitch for rolled roofing is 2 inches of decline per 12 inches of horizontal direction 2 12 pitch.

Roll roofing is coated on both sides with asphalt and its exposed side is protected with mineral granules. How to install roll roofing on low slope roofs. With rolled roofing particularly when you do the work yourself and have the assistance of a friend or helper you can get the rolls to the roof without a lot of effort or machinery. For a slightly sloped roof use the concealed nail method shown.

Set your store to see local availability add to cart. Roll roofing is often installed over bare wood sheathing or sheathing that has been painted with a primer. With two layers of protection double coverage roll roofing is acceptable for small roof areas and can be used on roofs as shallow as 1 12. It has just one layer so it goes.

But generally when there is a sheathing of boards instead of sheets of ply there is a propensity for movement of the wood to stress the grace and overlay because of it being stuck tight to the moving wood. Pros and cons of roll roofing.