Flashing A Metal Roof Valley

Valleys are a very important part of a well designed roofing system.

Flashing a metal roof valley.

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. These items can be fabricated in many different profiles. I have my valley custom made with water trough to help with leaking b. Failure to extend the entire width of the metal valley flashing beyond the eave of the roof.

Fasteners placed in the exposed center area. Be sure to check local building codes to ensure you have the proper width for your application. Drip edge metal valley flashing dormer chimney and kick out flashing shed water away from the connections between roofs walls chimneys and other building assemblies this collection of 18 articles animations and videos identifies the critical roof flashing areas illustrates durable roof flashing details and shows how to flash roofs. As the asphalt shingles are installed over the roof deck the shingles are extended into the valley.

This valley flashing material can be manufactured from any metal that will resist the effects of weather acid rain and other contaminants. The top joinery of both valleys when they meet on the same plane of roof is shown here. The soft aluminum base conforms to most metal roof panels. Whether for slate shingle or metal roofing valley flashing adds detail and helps to direct water.

Punctures in the center of the valley. This flashing provides protection for pipes cables conduits and wires. 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. Closed cut valley fully replaced with new metal valley flashing.

Up to 5 3 4 in. When properly installed w valley flashing will reliably channel run off water down the roof and into the gutter. Roof mastic applied along sides of valley flashing. W valley flashing protects the critical area of your roof where two slopes come together to form a valley.

With a clean valley you can lay down some peel and stick roofing membrane. This adjustable rubber pipe flashing for metal roofing this adjustable rubber pipe flashing for metal roofing accommodates roof penetrations from 1 4 in. Fold the top over the roof ridge and cut the bottom along the drip edge metal. Properly sized and installed valley flashing is key to channeling water safely off the roof.