Using Paper Or Metal In A Roof Valley

Roof mastic applied along sides of valley flashing.

Using paper or metal in a roof valley.

Provided the rest of the roofing shingles were properly installed and are performing properly my experience has been that an open valley system holds up better over time says jeff tessaro of iko roofing company. Still using metal for roof valleys has proven to be a popular choice among roofing experts. Installed correctly it provides a unique aesthetic especially when using painted or copper coil stock. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.

Closed cut valley fully replaced with new metal valley flashing. How to seal metal roof valley. Contractors may be able to reduce the cost of materials on roofing projects by eliminating the metal being installed in the valleys. Punctures in the center of the valley.

With a clean valley you can lay down some peel and stick roofing membrane. Why is a metal valley important. A metal valley is a pre bent roofing material designed to protect these vulnerable areas on your roof. This video shows the water proofing paper that we installed after re.

Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel. An open valley relies on metal flashing for protection. Some homeowners do not like the look of open valleys while others feel the metal accentuates the roof s shape particularly if copper or painted flashing is used. Failure to extend the entire width of the metal valley flashing beyond the eave of the roof.

How to measure and cut the metal on a valley for metal roof install. That flashing is left exposed so the roof has visible lines of metal running down the valley. The metal valley is installed on top of the ice and water shield and creates a highly effective barrier and passageway to keep your roof dry and protected. He notes that due to the metal construction of an open valley it may shed ice and water more quickly which could help minimize granule loss.

Fasteners placed in the exposed center area. Open valleys on the other hand leave the metal exposed which may be more pleasing to the eye especially if copper is used as the valley lining. How to install roofing paper in a valley section and install the valley flashing on top. Best practices for sealing the metal roof valley vary based on the slope of the roof.

And if problems with roof leaks or other damage occur years later an open valley system is. Fold the top over the roof ridge and cut the bottom along the drip edge metal. Avoid the following common errors. While there are a number of materials that can be used.