Dormer Valley Flashing Metal Roof

The top joinery of both valleys when they meet on the same plane of roof is shown here.

Dormer valley flashing metal roof.

Install an underlayment centered in the roof valley. Using clips permits movement in the valley as temperatures change. Be sure to check local building codes to ensure you have the proper width for your application. W type valley flashing is more rigid for handling so it stays straight and it stops waler rushing down one side of a roof from rushing back up the other side.

I have my valley custom made with water trough to help with leaking b. Lap successive sheets of metal flashing a minimum of 12 inches and seal laps. 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. Recommended procedures of basic valley flashing installation.

When properly installed w valley flashing will reliably channel run off water down the roof and into the gutter. The installer fabricates simple clips or valley flashing cleats whose bent edge interlocks with the folded over or hemmed edges of the metal roof valley flashing to secure the valley to the roof deck. Then install a non corrosive metal valley flashing of 24 minimum width. Cut it about 6 long and it will have to be cut in the bend from where it comes into contact with the main roof the extra 6.

Preparing to install the panels around the sides of a dormer and up to the valleys. Use roof valley cleats at intervals of 24 o c. W valley flashing protects the critical area of your roof where two slopes come together to form a valley. Make sure to cover the gap at the bottom of the raised ridge to keep bugs and ice out.

Fabral metal wall and roof systems.