How To Seal A Metal Roof Valley

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.

How to seal a metal roof valley.

Use tape sealant between the valley trim and the panel. This video shows the traditional and best way to repair a lead valley on a roof. Best practices for sealing the metal roof valley vary based on the slope of the roof. With a clean valley you can lay down some peel and stick roofing membrane.

This method of lead valley repair is proven to not only be fast and safe wit. First clean the debris out of the valley including sawdust nails and whatever else is in there. 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.

How to seal metal roof valley. Install synthetic roofing. Metal flashing allow water to flow down the valley. Check that the roofing material is cut in a straight smooth line on each side.

Open valleys have the flashing exposed and the shingles end at the flashing edges. Fold the top over the roof ridge and cut the bottom along the drip edge metal. The top joinery of both valleys when they meet on the same plane of roof is shown here. I have my valley custom made with water trough to help with leaking b.

Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. To seal make sure there is no debris in the valley.