Roof Leak at a Low Slope Valley

This video inspection of this roof leak shows two different solutions that were proposing. One is a membrane solution over this lower slope Valley; the other is to seal every union, penetration, and flashing. Take a look. This will help describe what we’re talking about pretty well.

This roof leak is at a facia return where there is flashing that ends in a low slope. There is also a exhaust for a dryer vent here. Roof leaking at low slope valley roof.

This is the second roof leak that is appearing inside. This roof leak is in the middle of this valley around 10 feet down from where the pitch changes. There is some moisture issue in the drywall on the inside, there’s a picture of my moisture meter here. This leak is most likely coming in not at one of the exhaust pipes but at a shingle union where the water can be getting in. There’s a picture of a shingle union at the rusted nail in the nail is close to close to the union of the shingle. Take a look.

When you add shingles to a low slope roof sometimes it works great there’s never any problems. From time to time what can be experienced it is that the roof is great for many years and then has problems. This Ruth is at a 1.8 to 12 pitch take a look at the picture.

The two solutions propose to resolve this are going to be a membrane roof like a rubber roof or a solution we’re all shingle unions are caulked all penetrations are called the fascia return And flashing are all sealed tightly. This is too possible ways that this issue can be resolved.

All of the nails were sealed under the shingles along with every union. The unions could have been a source for leaks considering that this is a very low slope roof. No water will be entering into the shingles from these unions any more.

The roof line was completely sealed up from top to bottom. There was old caulking at some spots that was deteriorating and could have been a cause for leaks.

All vents were sealed, including the exhaust stacks. They were sealed with clear caulk all around the edges and at the nail holes. Nail holes are a perfect source for leaks.

The front window had large gaps in between the window and the brick. It was sealed with clear caulk. Gaps in the window can cause significant energy usage and should be sealed.