How To Seal Roof Valleys

To secure the roof valley flashing nail it down carefully.

How to seal roof valleys.

This method of lead valley repair is proven to not only be fast and safe wit. Sealing metal roof valleys watertight fix valleys where two rooflines meet are typical problem areas on metal roofs. Only nail at the edges with only enough nails to. Metal to metal connections are difficult to keep watertight long term.

Insert the bar under a shingle and pry upward at a. Step 2 remove the shingles. Roof valleys are channels designed to drain runoff water and like any other part of your roof they can degrade over time with exposure to the elements. Remove 8 inches of shingles at each side of the valley with a 16 inch nail bar.

Once the roof valley has begun to leak you will need to cover the valley with flashing in order to prevent a repeat of the problem. A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water. If the ice and water shield is missing then you will have to remove the shingles on both sides along the valley put ice and water shield in place and re shingle the roof. This video shows the traditional and best way to repair a lead valley on a roof.

Check the entire roof valley carefully to locate the source of these problems. 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. Then starting at the base of the. Inserting valley seal under concrete tiles this stops back flowing of rain in heavy storms.

Though roof valleys are com mon leak sites on shingle roofs it s typically fairly easy to fix these problems with a little know how. In order to lay the flashing the shingles on the roof will have to be removed. Start at the upper row of shingles at the upper end of the valley.