How To Roof A Valley With Flashing

Lile points out that valleys lined with roll roofing are not as durable.

How to roof a valley with flashing.

Stop nailing 6 inches from the center. Avoid the following common errors. Failure to extend the entire width of the metal valley flashing beyond the eave of the roof. Only nail at the edges with only enough nails to hold it in place.

Open valleys have metal flashing to protect this critical area of the roof. While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately. Properly sized and installed valley flashing is key to channeling water safely off the roof. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.

Roof one side of the valley running the shingles across it. Shingle the other side of the valley the same way. Punctures in the center of the valley. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.

Closed cut valley fully replaced with new metal valley flashing. To secure the roof valley flashing nail it down carefully. Roof mastic applied along sides of valley flashing. Fasteners placed in the exposed center area.

Extra nails may increase the risk of leaks. This video shows the water proofing paper that we installed after re. How to install roofing paper in a valley section and install the valley flashing on top. Then starting at the base of the valley center your first piece of flashing in the valley.

Valley flashing is metal or sometimes peel and stick material that protects an important area on the roof where two slopes come together to form a valley. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. Fold the top of the flashing over the ridge and nail it off every ten inches or so along the outer edge of the flashing now this valley will carry water off the roof and away from the house.