2 Layers Roll Roofing

The top membrane sheet to a torch down roofing system is a smooth cap sheet.

2 layers roll roofing.

Get your trowel and another scoop of cement and apply it on the roof below the second chalk line. If your roof pitch declines up to 1 inch vertically for every 12 inches horizontally 1 12 pitch it is a good candidate for rolled roofing as long as you use the concealed nail method of fastening. Owens corning deckseal sa sbs cap 39 375 ft w x 32 833 ft l 100 sq ft shasta white roll roofing. How to install roll roofing on low slope roofs.

As it is rolled out the roofing professional will use a torch to heat the bottom of the cap to the top of the base sheet. Then nail the opposite edge. As mentioned above place the first 6 inches 15 cm of the second layer on top of the first layer. The first course starts with an extra 1 2 wide run.

Nail along one edge first spacing nails inch in from the edge and 6 inches apart. For extra durability you may install roll roofing in two layers. Clean the roof with a broom to remove any debris. Asphalt shingles typically can have one more layer added over the top two roofs total.

Otherwise the safest minimum pitch for rolled roofing is 2 inches of decline per 12 inches of horizontal direction 2 12 pitch. So anywhere along the gable end that you can see the felt you ll see two layers. On most flat roofs such as epdm tpo or modified it is perfectly acceptable to two layers of roofing. It also helps if you first install a layer of roofing felt.

Richards also estimates that the homeowner saves at least 1 000 in costs associated with removing and properly disposing of the existing shingles. Install the first strip upside down. In a two layer torch down roof the system is complete at this point. When the two layers are pressed together they form a seal.

To install roll roofing you ll need to cut the material into long strips of the correct length for your roof and lay it flat. Once the cement is spread across the roof it s time to place the second layer down. The homeowner will have two layers of shingles protecting the roof and the home is less likely to have ice dams he says. Steep sloped roof products such as tile slate metal and shakes only allow one layer.

There are some advantages to roofing over existing shingles says dale richards owner of richards roofing in troy michigan. Extend the front edge of the drip edge so it runs off the roof and into the. Apply roofing cement and secure the second layer to the roof. Check the sheathing for any nails or screws that may be.

Valleys will be open so flash them before hand with metal or two layers of roll roofing the first an 18 inch wide strip and the second 36 inches wide. The strips should always be horizontal.