How To Seal A Metal Roof Valley

Metal to metal connections are difficult to keep watertight long term.

How to seal a metal roof valley.

Nail each shingle and cover the head with roofing cement. Place the new piece of sheet metal valley flashing in the valley with the raised center aligned with the center of the valley from top to bottom. Sealing metal roof valleys watertight fix valleys where two rooflines meet are typical problem areas on metal roofs. This method of lead valley repair is proven to not only be fast and safe wit.

Using 3 layers of thermal tec s mr multi ply roof system where most of the movement occurs will provide a watertight seal in these areas. Check that the roofing material is cut in a straight smooth line on each side. This video shows the traditional and best way to repair a lead valley on a roof. Align the lower end of the raised center with the.

With a clean valley you can lay down some peel and stick roofing membrane. Best practices for sealing the metal roof valley vary based on the slope of the roof. How to seal metal roof valley. Use tape sealant between the valley trim and the panel.

The top joinery of both valleys when they meet on the same plane of roof is shown here. First clean the debris out of the valley including sawdust nails and whatever else is in there. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. Fold the top over the roof ridge and cut the bottom along the drip edge metal.

To seal make sure there is no debris in the valley. Open valleys have the flashing exposed and the shingles end at the flashing edges.