Fix Leaking Roof Valley Flashing

Roof vent pipes from plumbing or exhaust vents penetrate the roof and are usually sealed using a collar style flashing made out of a flexible material like epdm rubber or flexible pvc.

Fix leaking roof valley flashing. Then reshingle sliding metal step flashing behind the fascia board the trim behind the gutter. In either situation the leaking roof valley can be fixed by removing affected shingles and structural elements and upgrading your roof s flashing. Cut each side at the upper end of the valley to conform with the. A metal lining under the membrane secures that the valley will never puncture again.

A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water. And damaged flashing is behind most roof leaks. 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. The valley flashing laid over the joint where the two roofs meet should overlap the step flashing at least 2 in.

Place the shingles to one side for use later. A flashing is a transitional roofing material that connects the roof material to some other building material or to another part of the roof. If leaks continue to occur from ice dams consider installing roof edge heating cables. Step 2 place a bucket underneath the nail to catch the water as it runs down the nail.

Insert a nail in the hole where water is leaking through the roof. We install 20 inch wide valley flashing on all of our roofs. 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. Step 3 lay the flashing.

Metal flashing is used to divert water. 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. Small holes or corroded spots in flashing can be easily repaired. Cut each side of the flashing at the lower end to conform with the corresponding edges of the roof using sheet metal cutters.

We lay an entire shingle across the valley. The nail will provide a path for the water. When then take the lower pitched or smaller side the panel the receives the least amount of water and use that as our base. Roof vent pipes are common areas for roof leaks.