Dormer Valley Flashing Metal Roof

Lap successive sheets of metal flashing a minimum of 12 inches and seal laps.

Dormer valley flashing metal roof.

Preparing to install the panels around the sides of a dormer and up to the valleys. The ridge flashing on the dormer covers the end of the valleys at the peak and tucks under the main roof. Make sure to cover the gap at the bottom of the raised ridge to keep bugs and ice out. Cut the bottom edge and fold it down over the drip edge.

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. 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. I have my valley custom made with water trough to help with leaking b. Using clips permits movement in the valley as temperatures change.

W valley flashing protects the critical area of your roof where two slopes come together to form a valley. 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.

Use roof valley cleats at intervals of 24 o c. Then install a non corrosive metal valley flashing of 24 minimum width. The top joinery of both valleys when they meet on the same plane of roof is shown here. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch overlap.

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.