Install Roll Roofing Underlayment
Roofing underlayment or felt provides an extra weather barrier in case of blowoffs or water penetration through the roofing or flashings.
Install roll roofing underlayment. Roll out the underlay and tack it down making sure that it is flat and smooth not buckled or wrinkled anywhere. The standard approach for two ply roofing underlayment is to lap a 36 inch roll by 19 inches. This also applies to metal hip or valley flashings that may be specified. Attach drip edge along the edge of the roof with roofing cement.
Peel the release liner from the membrane. Low slope means that these products are installed on roof slopes of 2 12 or more. Epilay plystik plus is an extremely strong roofing underlayment with a 48 mil thickness and a 2 square roll weighing 48 lbs. On this video i showed you how to prepare a basic flat roof step by step hope you learn something and.
Asphalt roll roofing installation roll roofing is simplest product to install on a small section of low slope roof is 90 pound roll roofing. The lap is half the width of the roll plus one extra inch for headlap. Flat roof installation. Roofing underlayment or felt protects the roof deck from rain before the roofing is installed.
It is available in 2 square 3ftx66 7ft rolls. This provides two plies across the entire roof with three plies at the headlap. Press the membrane of the self adhering roofing underlayment in place with heavy hand pressure to ensure the desired adhesion to the roof deck. Install a single vertical length of underlayment roll centrally over hips and down valleys before weaving horizontal underlayment across the valleys and hips.
Install underlay 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. Install underlayment a minimum of 6 inches up roof protrusions or vertical abutments. Best practices guide to residential construction lists five good reasons to install roofing underlayment. Cut the membrane into 10 to 15 foot lengths and re roll loosely.
Peel back 1 to 2 feet of release liner align membrane.