Rolled Roofing Overlap

The overlapping felt creates a secondary barrier for moisture and wicks water away from the shingles above and the sheathing below.

Rolled roofing overlap.

How to install roll roofing on low slope roofs. Align the length of roll roofing with the lowest edge of the flat roof and flush to the side edge of the roof. Attach drip edge along the edge of the roof with roofing cement. 8 when you encounter a roof valley trim the roll roofing so it ends 1 2 inch from the valley s center.

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. Roll roofing overlap horizontal choose the overlap width according to the number of plies of roof to be installed. Video of the day. Clean the roof with a broom to remove any debris.

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. To seal a plumbing vent spread roofing. 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.

Plan so that no two butt joints are closer than 2 feet from each other. Learn about the liberty sbs self adhering base ply sheet. Overlap the next strip of roofing material with the first by at least 4 inches. Smooth down the sheet with your hand to adhere the roll roofing to the roof deck.

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. Position the first course so it overhangs the drip edges by about 1 4 inch and roll it out a. 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. Cover hips or ridges last.

This will help to protect the subsurface. Continue to attach the material with nails every 3 inches. How to do it attach first course. Pull back 6 inches of the release paper in order to position the start of the roofing sheet accurately.

Roofing felt is required to overlap 2 inches over the lower felt course. Therefore a 2 inch overlap provides redundancy at the edges where the barrier is weakest.