Roof Leak Between Plywood

If a leak is difficult to find enlist a helper and go up on the roof with a garden hose.

Roof leak between plywood.

Gable roof leak between plywood pics im just looking for a little advice i have a leak in my roof. Rotted plywood cannot support the weight of a roof the way healthy wood can nor can it safely grip the nails put into the roof and keep them held firm. I went in the attic to see it and took a picture there is a black area about 4ftx4ft maybe less. If it hasn t rained or snowed lately these dark areas may not be easy to spot.

Horizontal joints between stacked sheets of plywood siding use something called z flashing to keep water out. Make the final repair as soon as weather permits. To find the source of a roof leak. Rotted plywood can cause a number of issues.

Roof leaks are confusing to diagnose. If you notice areas of black mold however it s likely that this is where your roof has a leak. Moisture causes wood to rot and rotten wood absorbs water even more readily than fresh wood. Also see if there are any areas on the underside that are darker than others.

Im pretty handy but have never done roofs. Trowel the roofing tar into the leak on the underside of the roof deck using a putty knife. Look in the attic with a flashlight for evidence like water stains trhen trace them up the roof and rafters to the entry point. Common areas of roof leaks during rain.

If the leak isn t obvious have a helper watch in the attic while you get on the roof with a garden hose. If your roof leaks when it rains hard you may have an issue in any one of the following areas. For example soak the downhill side of a chimney first then each side then the top on both sides. Off the roof many other connections depend of flashings for water leak prevention.

Repairing a roof leak from the inside is a temporary fix only. Push the shingle or plywood into the tar and trowel more roofing tar around the edges of the patch. Unless the roof is leaking the line you see on the roof is an aesthetic problem but the cupped plywood is putting an added strain on the shingles either side of the visible line. Isolate areas when you run the hose.

Start low soaking the area just above where the leak appears in the house. And all the rest of the roof is fine. Check for any signs of light coming through the plywood to find any holes. Slow roof leaks can be deceptive because what you see might seem minor.