Rolled Roofing Overlap

Continue to stagger the rows as you work with a two inch overlap on the horizontal seams and a six inch overlap on the vertical seams.

Rolled roofing overlap. 8 when you encounter a roof valley trim the roll roofing so it ends 1 2 inch from the valley s center. Pull back 6 inches of the release paper in order to position the start of the roofing sheet accurately. Attach drip edge along the edge of the roof with roofing cement. Continue to attach the material with nails every 3 inches.

This will help to protect the subsurface. 2 or 3 varies by manufacturer or 16 12 or 9 exposure for 2 3 or 4 ply roofs respectively. Use a 6 inch swath of roofing cement to attach the ends of your strips of roll roofing to the roof itself. Sbs roll roofing overlap width is commonly 3 4 or 3 6 varying by product and also referred to as the selvage edge width.

Roofing felt is required to overlap 2 inches over the lower felt course. Position the first course so it overhangs the drip edges by about 1 4 inch and roll it out a. How to do it attach first course. Therefore a 2 inch overlap provides redundancy at the edges where the barrier is weakest.

Smooth down the sheet with your hand to adhere the roll roofing to the roof deck. Align the length of roll roofing with the lowest edge of the flat roof and flush to the side edge of the roof. How to install roll roofing on low slope roofs. 7 apply the next piece of roll roofing so the overlap covers the nail heads using roofing cement to secure the 2 pieces of roofing together.

Video of the day. Roll roofing overlap horizontal choose the overlap width according to the number of plies of roof to be installed. Plan so that no two butt joints are closer than 2 feet from each other. Extend the front edge of the drip edge so it runs off the roof and into the.

To seal a plumbing vent spread roofing. Learn about the liberty sbs self adhering base ply sheet. Check the sheathing for any nails or screws that may be. Apply cement at all of the seams and nail down all sheets as you progress leaving room for about one inch of overhang on each side.

Clean the roof with a broom to remove any debris. Cover hips or ridges last.