Garage Roof Flashing Leaking

Worn out flashing or missing sealant can also cause roof leaks around dormers.

Garage roof flashing leaking.

If your ceiling has a plastic vapor barrier between the drywall and the attic insulation push the insulation aside and look for flow stains on the plastic often water runs to openings in the vapor barrier such as at ceiling light fixtures. Dormer leaks can be caused from a number of issues. Flashing seals roof transitions where absorption can occur or where water runs down. Flashing sections could slide out of place due to missing nails or cracked caulking.

Sometimes the water shows up at a ceiling spot distant from the leak. In our page top photo my grandson tanner gilligan points out the white caulk that was installed as a stopgap measure where the builder has installed a bay. 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. Flashing s put where a chimney penetrates the roof or where the roof joins a dormer.

A roof leak at the edge of a dormer can allow a lot of water to enter your home. Expert advice on how to repair roof flashing and chimney flashing prevent ice dams and solve other roof flashing problems. Water may enter the garage through the walls but the source of the leak could be higher on the structure. Rotten or missing trim or siding can allow water to leak behind flashing and into your roof.