Asphalt Shingle Roof Valley Flashing

Open valleys have metal flashing to protect this critical area of the roof.

Asphalt shingle roof valley flashing.

Shingle the other side of the valley the same way. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. The three methods to shingle a roof valley. Download pdf download dwg.

Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately. Need help with your roof repair. Hire the best roofing.

Then starting at the base of the valley center your first piece of flashing in the valley. Download pdf downlaod dwg. D226 sure grip ii. A closed cut asphalt shingle roof valley starts the same way as a woven valley with the first course of shingles run across the valley from both roof planes lapping the shingle from the larger or steeper roof plane over the shingle from the smaller shallower plane.

One of the details that varies between homes is the method of flashing the valley areas of the roof. Download pdf download dwg. Asphalt shingle document library ashpalt shingle. Roof one side of the valley running the shingles across it.

Failure to extend the entire width of the metal valley flashing beyond the eave of the roof. Ensure ice and water protector has been installed along the valley first. Installing laced shingles in a roof valley when shingle manufacturer does not approve of. Only nail at the edges with only enough nails.

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. Installing a closed valley a k a. Download pdf download dwg. Preparation of the valley with an underlayment is a critical part of your roof installation.

Installing corrosive type metal flashing in valley. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at. Underlay d226 roof wrap. To secure the roof valley flashing nail it down carefully.

Closed valleys or open valleys. To understand what makes a valley either closed or open it is important to understand how a valley is constructed. There are two common methods for completing the flashing of a valley in a shingle roof system.