How To Do Valley On Metal Roof

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

How to do valley on metal roof.

In roofing a valley is also a low spot that is created when two slopes of a roof meet. I have my valley custom made with water trough to help with leaking b. However a valley is still a common place to find roof leaks because once the flashing is damaged say by a hail storm for example water can easily penetrate. Cut corners and apply cement dub cut the top layer shingles see step 4 in open metal valley above.

The top joinery of both valleys when they meet on the same plane of roof is shown here. Make sure that the end of the flashing panel is perfectly in line with the edge of the roof. 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. Cut each side at the upper end of the valley to conform with the.

Cut each side of the flashing at the lower end to conform with the corresponding edges of the roof using sheet metal cutters. Use tape sealant between the valley trim and the panel. Fold the top over the roof ridge and cut the bottom along the drip edge metal. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant.

Install synthetic roofing. With a clean valley you can lay down some peel and stick roofing membrane. Also apply cement to attach the top layer shingles to each other see steps 5 and 6 in open metal valley above. First clean the debris out of the valley including sawdust nails and whatever else is in there.

Lay the flashing down in the roof valley and start at the lower end of the roof. Use 1 inch galvanized roofing nails. Attach the flashing panel in place at the bottom.