Metal Roof Valley Flashing

Use roof valley cleats at intervals of 24 o c.

Metal roof valley flashing.

At the end of the vertical sidewall the step flashing shall be turned out in a manner that directs water away from the wall and onto the roof and or gutter while this is a nice diagram of how these flashings work don t forget our 5 th design rule. Clip the top corner of shingles along valleys to keep water flow toward center of valley. The flashing shall be a minimum of 4 inches 102 mm high and 4 inches 102 mm wide. 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.

Lay the flashing down in the roof valley and start at the lower end of the roof. Make sure that the end of the flashing panel is perfectly in line with the edge of the roof. First clean the debris out of the valley including sawdust nails and whatever else is in there. 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.

How to secure metal roof valley by clips cleats or edge trapping roofing nails. Product overview 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. When properly installed w valley flashing will reliably channel run off water down the roof and into the gutter.

Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic. 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. Attach the flashing panel in place at the bottom.