And if you need help solving a pesky water leak call the mosby office at 314 909 1800 or contact them here.
How to repair roof leak at corner of dormer.
If there is any overlapping flashing at the corners where walls dormers and roof meet double check to see if the caulk is in good condition.
When a roof leaks the problem is often due to leaks in and around the metal roof flashing that protects roof edges valleys and the junctions between roofing and obstructions such as chimneys dormers and vent pipes.
If a leak is difficult to find enlist a helper and go up on the roof with a garden hose.
Moist drywall or paint around light fixtures or electrical outlets.
Damp spots around interior air vents or fireplaces.
Siding directly next to flashing should overlap it by at least two inches.
Lay soldered corner flashing around the corner and over the base flashing.
If the leak isn t obvious have a helper watch in the attic while you get on the roof with a garden hose.
Isolate areas when you run the hose.
Check for power lines or electrical wires attached to your roof near the dormer.
Climb the ladder and drive a 20d nail into one of the rafters extending from beneath the roof near the top of the ladder.
Start low soaking the area just above where the leak appears in the house.
Your going to want the amphibicaulk or any other manufacturer that makes a wet dry cement because under the shigles you ll have moisture and you want to be sure to have a good bond.
Nail the flashing to the dormer near the top edge and continue with the shingles and step flashing.
Learn more about mosby s water management services.
Begin soaking low on the roof just above where the leak is visible inside the house.
For example soak the downhill side of a chimney first then each side then the top on both sides.
Expert advice on how to repair roof flashing and chimney flashing prevent ice dams and solve other roof flashing problems.
Safely mounting the roof.
This dormer leak repair has kept the house waterproof ever since and the workmanship has a 10 year warranty.
Water stains or damp spots on your ceiling.
If not replace it with new caulk as well.
Try to seal the edges of the vally where the dormer lies and look for any apparent problems.
Use enough water to mimic heavy rains.
If you find cracked rotted or missing siding replace it with a new piece.
Run water over the low side of the penetration for several minutes while the helper watches for any water droplets.
Interior paint bubbling or peeling during hard rains.
Place the legs of an extension ladder on level solid ground.
