Rolled Roofing Overlap

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.

Rolled roofing overlap.

Video of the day. 8 when you encounter a roof valley trim the roll roofing so it ends 1 2 inch from the valley s center. Roofing felt is required to overlap 2 inches over the lower felt course. Roll roofing overlap horizontal choose the overlap width according to the number of plies of roof to be installed.

Align the length of roll roofing with the lowest edge of the flat roof and flush to the side edge of the roof. Liberty sbs self adhering roofing system will provide long lasting protection for the low slope areas of your property without the danger or hassles associated with the installation of other conventional roofing products. Learn about the liberty sbs self adhering base ply sheet. How to install roll roofing on low slope roofs.

Extend the front edge of the drip edge so it runs off the roof and into the. Use a 6 inch swath of roofing cement to attach the ends of your strips of roll roofing to the roof itself. Continue to attach the material with nails every 3 inches. The overlapping felt creates a secondary barrier for moisture and wicks water away from the shingles above and the sheathing below.

Overlap the next strip of roofing material with the first by at least 4 inches. Sbs roll roofing overlap width is commonly 3 4 or 3 6 varying by product and also referred to as the selvage edge width. Cover hips or ridges last. Therefore a 2 inch overlap provides redundancy at the edges where the barrier is weakest.

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. Check the sheathing for any nails or screws that may be. Smooth down the sheet with your hand to adhere the roll roofing to the roof deck. 2 or 3 varies by manufacturer or 16 12 or 9 exposure for 2 3 or 4 ply roofs respectively.

This will help to protect the subsurface. To seal a plumbing vent spread roofing. 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. How to do it attach first course.

Position the first course so it overhangs the drip edges by about 1 4 inch and roll it out a. Attach drip edge along the edge of the roof with roofing cement.