Roof Valley Flashing Repair

You may want to carefully measure the flashing and only lift up as many shingles as you need to get that into the roof or you may want to lift up a number near to the valley in order to ensure that the roof is fully protected in the future.

Roof valley flashing repair.

Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic. Plug pinholes with roofing cement and patch holes up to about 3 4 inch in diameter with a patch from the same material as the flashing. First roughen the area around the hole with a wire brush or sandpaper and then clean it. L shaped flashing is a versatile general use flashing used where a uniform or strengthened finish is needed on a 90 surface.

The gibraltar building products l flashing protects your home the gibraltar building products l flashing protects your home from moisture infiltration where your wall meets your roof. Repairing a roof valley involves removing some shingles and installing a. Only nail at the edges with only enough nails to hold it in place. Use roofing nails to secure the flashing in place driving nails at 1 foot intervals along the outer edges of each side from top to bottom.

How to install roofing paper in a valley section and install the valley flashing on top. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. Lap successive sheets of metal flashing a minimum of 12 inches and seal laps. Then starting at the base of the valley center your first piece of flashing in the valley.

A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water. Open valleys have metal flashing to protect this critical area of the roof. How to repair roof flashing small holes or corroded spots in flashing can be easily repaired. To secure the roof valley flashing nail it down carefully.

Then install a non corrosive metal valley flashing of 24 minimum width. In other cases shingles are overlapped to make a valley and water from harsh rains can find a way under the shingles. Replace all shingles you removed making sure their edges are at least 1 inch from the elevated center of the flashing. In order to lay the flashing the shingles on the roof will have to be removed.

This video shows the water proofing paper that we installed after re. 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. Use a metal cutter to alter the length of the flashing to ensure it lines up with your roof s lower edges. Extra nails may increase the risk of leaks.