Installing Roll Roofing Underlayment

Roll out the underlay and tack it down making sure that it is flat and smooth not buckled or wrinkled anywhere.

Installing roll roofing underlayment.

Peel the release liner from the membrane. Check the sheathing for any nails or screws that may be. How to install roll roofing on low slope roofs. 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.

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. You will need 1 10 gallon of lap not mastic cement for every roll and 2 pounds of roofing nails for every square. Rolled roofing is easy to install and a very economical roofing material to use. The roofing should overhang the eaves by inch except where you install drip edge flashing on top of the roofing along the rake edge.

Clean the roof with a broom to remove any debris. Attach drip edge along the edge of the roof with roofing cement. Peel back 1 to 2 feet of release liner align membrane. An underlayment of felt roofing is optional.

Press the membrane of the self adhering roofing underlayment in place with heavy hand pressure to ensure the desired adhesion to the roof deck.