Metal Flashing For Roof Valleys

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.

Metal flashing for roof valleys.

Be sure to check local building codes to ensure you have the proper width for your application. Install an underlayment centered in the roof valley. When properly installed w valley flashing will reliably channel run off water down the roof and into the gutter. This flashing provides protection for pipes cables conduits and wires.

This valley flashing material can be manufactured from any metal that will resist the effects of weather acid rain and other contaminants. Many roofers cut the shingles across because they say it s safer. An open valley relies on metal flashing for protection. How to cut metal roofing to fit valleys.

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. The soft aluminum base conforms to most metal roof panels. Preformed valley flashing is used to channel water down the roof into the gutters in the roof valley area. It s bendable for various pitches.

That flashing is left exposed so the roof has visible lines of metal running down the valley. Up to 5 3 4 in. Recommended procedures of basic valley flashing installation. Drip edge metal valley flashing dormer chimney and kickout flashing are types of roof flashing that shed water away from the connections between roofs walls chimneys and other building assemblies.

Metal valley trim also known as metal valley flashing is beneficial because it drains water away from the structure of your metal building which helps prevent moisture damage. When installing metal valley flashing there are a few things to keep in mind from cutting metal roofing to sealing the flashing. W valley flashing protects the critical area of your roof where two slopes come together to form a valley. As the asphalt shingles are installed over the roof deck the shingles are extended into the valley.

Then install a non corrosive metal valley flashing of 24 minimum width. Galvanized steel aluminum and copper can all be used. In this video i show you how i do the valleys on a shingle roof. With a clean valley you can lay down some peel and stick roofing membrane.

Fold the top over the roof ridge and cut the bottom along the drip edge metal.