Installing Roll Roofing Underlayment

While it is not necessary to install an underlay with roll roofing it is inexpensive and adds a layer of protection that makes it worthwhile.

Installing roll roofing underlayment. Cut the membrane into 10 to 15 foot lengths and re roll loosely. Rolled roofing is easy to install and a very economical roofing material to use. Extend the front edge of the drip edge so it runs off the roof and into the. An underlayment of felt roofing is optional.

Roll out the underlay and tack it down making sure that it is flat and smooth not buckled or wrinkled anywhere. Clean the roof with a broom to remove any debris. How to install roll roofing on low slope roofs. The roofing should overhang the eaves by inch except where you install drip edge flashing on top of the roofing along the rake edge.

Peel back 1 to 2 feet of release liner align membrane. It is required as an underlayment for most low slope asphalt roofing applicaions and also works well for low slope shed roofs without any additional roofing on top of it. You will need 1 10 gallon of lap not mastic cement for every roll and 2 pounds of roofing nails for every square. It works well for backyard storage shed roofing applications.

Attach drip edge along the edge of the roof with roofing cement.