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