Rolled Roofing Overlap

Use a 6 inch swath of roofing cement to attach the ends of your strips of roll roofing to the roof itself.

Rolled roofing overlap.

Therefore a 2 inch overlap provides redundancy at the edges where the barrier is weakest. To seal a plumbing vent spread roofing. Overlap the next strip of roofing material with the first by at least 4 inches. Pull back 6 inches of the release paper in order to position the start of the roofing sheet accurately.

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

The overlapping felt creates a secondary barrier for moisture and wicks water away from the shingles above and the sheathing below. 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. Roofing felt is required to overlap 2 inches over the lower felt course.

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. Continue to attach the material with nails every 3 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. This will help to protect the subsurface.

Smooth down the sheet with your hand to adhere the roll roofing to the roof deck. How to do it attach first course. 8 when you encounter a roof valley trim the roll roofing so it ends 1 2 inch from the valley s center. How to install roll roofing on low slope roofs.

2 or 3 varies by manufacturer or 16 12 or 9 exposure for 2 3 or 4 ply roofs respectively. Clean the roof with a broom to remove any debris. Align the length of roll roofing with the lowest edge of the flat roof and flush to the side edge of the roof. 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.

Attach drip edge along the edge of the roof with roofing cement. Learn about the liberty sbs self adhering base ply sheet.