Obviously the further up the wall a flashing extends the greater the resistance to water intrusion.
How to flash a roof against a wall.
A roof or wall that is not properly sealed off from water can be extremely costly to fix not to mention the hassles that accompany the unwanted water.
How to install roof flashing against a wall.
Flexible flashing tape seals the eave to the wall.
Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia.
Metal flashing also called roof flashing goes against a stucco wall to protect it from water damage.
How to install roof flashing against a wall with a corner when there is a corner where the roof meets the wall you will need a corner flashing piece.
I cut the tape so that it laps onto the housewrap above and 3 in.
A corner flashing piece can either be bought from the hardware store or it can be made using a regular step flashing piece.
Step flashing redirects the water back onto the shingle.
A 5 inch wide flashing will result in a 2 1 2 roof deck flange and 2 1 2 vertical wall flange.
Likewise a 10 wide flashing will result in a 5 inch wide roof deck flange and a 5 inch vertical flange.
Even though roof flashing is one of the most important elements of a roof not many people know how to install roof flashing against a wall properly.
For areas where the walls meet the roof you will need to use the step flashing technique.
Below are two photographs of roof wall step flashing completed and effective of a slate roof against a brick wall below left and in process with step flashing against a dormer sidewall before the dormer siding has been put in place below right.
Above the roof sheathing.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall.
Proper roof wall abutment flashing examples.
