Steel Roof Dormer Valley

Best practices for sealing the metal roof valley vary based on the slope of the roof.

Steel roof dormer valley.

W valley flashing protects the critical area of your roof where two slopes come together to form a valley. First clean the debris out of the valley including sawdust nails and whatever else is in there. Fabral metal wall and roof systems. The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off.

Roof shields not only provide a permanent seal but they are easy to install saving time and money. Installing dormer valley flashing. Roof valleys are like gutters with a steep pitch but the stakes are higher for valleys than they are for gutters. Roof shields work with standard valley flashing but w valley style flashings are recommended for the best overall roof system.

In a previous video we covered how to flash roof edges before shingling. To properly install a valley cap the w valley flashing must be notched and installed as shown on this instruction sheet. How to seal metal roof valley. In this video we ll flash the valley.

Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel. Failure to extend the entire width of the metal valley flashing beyond the eave of the roof. When properly installed w valley flashing will reliably channel run off water down the roof and into the gutter. The top joinery of both valleys when they meet on the same plane of roof is shown here.

Fasteners placed in the exposed center area. Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet. Cut the panels from the ground instead of on the roof to avoid damaging the roof with the debris. Be sure to check local building codes to ensure you have the proper width for your application.

I have my valley custom made with water trough to help with leaking b. Roof mastic applied along sides of valley flashing. Avoid the following common errors.