How To Waterproof A Roof Valley

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.

How to waterproof a roof valley. For more information on roofing felt read how important is roofing felt as you can easily see if the shingles fail and allow water in felt is incapable of redirecting the water away from the home. This product is specifically designed to seal around fasteners and act as a. Valleys are where 2 angles of a roof meet creating a v shape. Trim the shingles to these lines and cut a 5 cm triangle off the top corner to direct the water into the valley.

Closed valleys are where the shingles butt together on top of the metal flashing. When you discover a leak coming from your valley there are a few ways you can make the roof repairs. Simply relying on felt to protect your valleys is setting yourself up for failure. Now roll out the roofing material and make it 18 inches wide from the center of the valley.

His technique begins with the careful removal of old shingle the placement of a waterproof membrane and the installation of valley flashing followed by the replacement of the roof shingles. In order to lay the flashing the shingles on the roof will have to be removed. Nail the shingles 5 cm back from the chalk line. Hazlett s process involves using specialized tools such as a utility knife fitted with a hook blade a roofer s pry bar and a metal seamer.

Waterproofing membranes ice water shield ice water shield was developed for northern climates that suffer from ice damming. How to install roofing paper in a valley section and install the valley flashing on top. To waterproof it use roofing tar along the edges. Snap two chalk lines from the ridge to the eaves 8 cm apart increasing in width by 1 cm per meter towards the eaves.

Lay a shingle on the valley without fixing it and see how the rest of them should be installed. This video shows the water proofing paper that we installed after re. Step 2 remove the shingles. Check the entire roof valley carefully to locate the source of these problems.