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. Flexible flashing tape seals the eave to the wall. 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.

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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.

How to flash a roof against a wall.

A 5 inch wide flashing will result in a 2 1 2 roof deck flange and 2 1 2 vertical wall flange. Step flashing redirects the water back onto the shingle. How to install roof flashing against a wall. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.

I cut the tape so that it laps onto the housewrap above and 3 in. Above the roof sheathing. Flashing is usually made of sheet metal and is used to seal and protect joints in a building like those where a roof meets the brick walls of a chimney from roof leaks by directing the flow of. It may seem as if a.

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. Proper roof wall abutment flashing examples. Even if one piece of step flashing fails the flashing and shingle below it start the process over again.

A corner flashing piece can either be bought from the hardware store or it can be made using a regular step flashing piece. Obviously the further up the wall a flashing extends the greater the resistance to water intrusion. Likewise a 10 wide flashing will result in a 5 inch wide roof deck flange and a 5 inch vertical flange. For areas where the walls meet the roof you will need to use the step flashing technique.

I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall. 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.