The intersection between a roof and a sidewall can be a rot problem waiting to happen.
Roof leak where siding wall meets roof line.
Problem 2 water is entering the top of the window then running down the interior right side of the window frame.
Roof leaks can ruin insulation become a breeding ground for black mold damage interior ceilings and walls and rot the wooden framing.
I made this video this morning and i hope it help explain the flashing wall detail where the siding meets the roof.
The wall water has to be getting behind the siding along where the garage meets the house.
You find these flashings where a roof climbs alongside a vertical wall.
So let s look at the ten of the most common culprits in causing your roof to leak and what you can and should do about them other than recruiting a bucket brigade.
Improper installation of flashing where roofing shingles meet vinyl siding.
You should only be able to see a tiny bit of the flashings if they were installed correctly.
See siding fiber cement gaps.
Structural movement or damage shown in a more extreme case at above right can also allow significant leaks into the building.
Installation gaps in siding of any type if not back flashed invite leaks into the wall above left.
Some roof leaks happen at step flashings.
Part of the flashing turns up on the wall and the other portion gets covered by the next row of shingles.
As each row of shingles is laid a step flashing is installed over the shingle next to the wall.
Someone at the build site used sealant on an area where the roof meets the side of the house in an attempt to fix the issue.
When each row of shingles was installed a step flashing was put next to the wall over the shingle and then covered by the next shingle row.
Some roof leaks happen at step flashings.
You find these flashings where a roof climbs alongside a vertical wall.
As each row of shingles is laid a step flashing is installed over the shingle next to the wall.
At the point where a roof meets a vertical wall you will see step flashings.
Improper installation of flashing where roofing shingles meet vinyl siding.
It is then running between the sheathing and siding until it gets to the top of the window.
