Roof Leak Dormer Valley

2 lack of flashing at top of trim over window.

Roof leak dormer valley.

In order to lay the flashing the shingles on the roof will have to be removed. 1 improperly installed or deteriorated roof to wall or roof to roof valley flashings at top back of dormer. Once the roof valley has begun to leak you will need to cover the valley with flashing in order to prevent a repeat of the problem. Worn out flashing or missing sealant can also cause roof leaks around dormers.

Even though these were previously billed as solutions for the leak a new roof and new siding did not stop the leaking. The reason why the roof valley is such a sensitive area has to do with all the rainwater and or melting snow that accumulates and flows through the valley on its way into the gutters. Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet. A roof leak at the edge of a dormer can allow a lot of water to enter your home.

Be sure to start small. Dormer leaks can be caused from a number of issues. In fact it s rare for leaks to develop in open areas of uninterrupted shingles even on older roofs. If you don t want to wait for rain to look for the leak try bringing the garden hose up on the roof.

Water stains appearing on the ceiling or mold growing on rafters are sure signs the leak didn t just appear overnight. The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off. The first thing to look for is any roof penetrations. The way ir was installed the main roof panel just has a notch cut in it and the end of the w valley trim sticks down through the roof and is visinbel from the inside.

Items that penetrate the roof are by far the most common source of leaks. Step 2 remove the shingles. Don t go crazy with the water. 3 deteriorated caulk around window and sill.

A leak in a roof at the dormer can cause extensive damage and expensive repairs. Check the entire roof valley carefully to locate the source of these problems. Looking for roof leaks on the outside of your house. Run the water over the place where you think the leak might be located.

The heavy snows and ice of winter 2013 14 compounded the problem when ice damming on the roof backed up into the dormer and poured through to the foyer ceiling creating the situation shown above. I had a metal roof pbr galvalume panels installed on a house i m building and it leaks around the dormers where the valleys meet the main roof. Penetrations can include plumbing and roof vents chimneys dormers or anything else that projects through the roof. 4 roofing leak above dormer due to age deterioration or poor installation.