Roof Leaking Around Dormer

Most dormer leaks occur as the flashing deteriorates and the connection between the two roofs is weakened leading to leaks which may cause mould stains and damage within the walls of the house.

Roof leaking around dormer.

Here s a few of the defects that can cause dormers and their windows to leak. 2 lack of flashing at top of trim over window. 3 deteriorated caulk around window and sill. Look for damp spots on the underside of your roof.

Also see our blog post the inspector says that a missing kickout flashing caused water damage inside the wall. Water stains appearing on the ceiling or mold growing on rafters are sure signs the leak didn t just appear. Use the putty knife to remove all the caulking around the dormer. Here we look at how to repair flashing that can cause leaks.

Like an eighth of an inch. Also look for a thin stream of water flowing down one of the rafters. The rubber gasket that surrounds the vent pipe could be rotted. The flashing that goes horizontally across the roof the apron flashing should extend about 4 6 inches beyond the wall of the dormer.

If your roof is leaking right now go into the attic with a flashlight and some chalk to mark with while it s raining. Caulk can be old cracked or even missing between the corner boards and between window edges and siding. The main problem is at the bottom corners. The interior walls of the dormer were often condensated and heavy rains would lead to water damage on the lower level foyer ceiling.

Dormer walls provide lots of spots where water can dribble down and enter the roof. 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. Check plumbing vent boots and roof vents if water is entering from that area to cause the leaking roof. Then the bottom piece of step flashing along the walls on both sides should extend down beyond the bottom corners by just a little.

Louis mo home had a leaking dormer shown above that was problematic for years. Roofing leak at dormer roof roof damage from falling branch or hail many homeowners also have a licensed roofer walk their entire roof every year or two to report on the condition and make any minor repairs. Often wind driven rain comes in from above the roof especially around windows between corner boards and siding and through cracks and knotholes in siding. A leak in a roof at the dormer can cause extensive damage and expensive repairs.

1 improperly installed or deteriorated roof to wall or roof to roof valley flashings at top back of dormer.