It can cause water damage to your ceilings and walls mold in your home s insulation or rotting rafters and roof sheathing.
Roof leak around dormer.
Look along the edge of the dormer siding where it meets the shingles.
Deteriorated caulk around window roofing leak at dormer roof roof damage from falling branch or hail.
Dormer roof repairs require some time and a few tools but are considerably cheaper than replacing an interior wall damaged from the leak.
Use a flashlight to ensure the flashing extends.
Something that starts as a small problem a roof leak can lead to big damage and even bigger headaches.
2 lack of flashing at top of trim over window.
Like an eighth of an inch.
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.
The interior walls of the dormer were often condensated and heavy rains would lead to water damage on the lower level foyer ceiling.
Here s a few of the defects that can cause dormers and their windows to leak.
3 deteriorated caulk around window and sill.
Lack of flashing at top of trim over window.
When inspecting your roof look for step flashing that has shifted as this could leave areas exposed.
Here s a few of the defects that can cause dormers and their windows to leak.
Rotten or missing trim or siding can allow water to leak behind flashing and into your roof.
Examine the trim and siding around the dormer.
The flashing that goes horizontally across the roof the apron flashing should extend about 4 6 inches beyond the wall of the dormer.
Then the bottom piece of step flashing along the walls on both sides should extend down beyond the bottom corners by just a little.
1 improperly installed or deteriorated roof to wall or roof to roof valley flashings at top back of dormer.
The main problem is at the bottom corners.
Even though these were previously billed as solutions for the leak a new roof and new siding did not stop the leaking.
Worn out flashing or missing sealant can also cause roof leaks around dormers.
Finding the leak 1.
Look for signs of rotting or a missing piece of siding.
A roof leak is extremely aggravating.
Check the flashing beneath the corner trims along.
