Even if one piece of step flashing fails the flashing and shingle below it start the process over again.
Proper roof to wall flashing.
Multiple pieces of the flashing will be installed in layers with shingles to ensure the water flows away from the wall.
The flashing extends up the wall at least 4.
Badly corroded flashing will need to be replaced.
Edge flashing and starter strip roofs peel off from the edges so it is critical to hold them tight with the roof deck sealed on the outside we turn to flashing the edges with metal and membranes metal drip edge flashing details roofing wrb flashing two ways to flash roof edges.
4 inches should go up the house wall and 4 inches should go on top of the porch roof shingles.
Learn how to install it below.
Storm proof roof 2.
At roof to wall intersections see figure 1.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.
Do not seal housewrap or building paper to step flashing.
How to install roof flashing against a wall.
Roofing cement can dry out and crumble away exposing joints to water.
Step flashing consists of short pieces of flashing each installed to overlap the shingle in the course below and to be overlapped by the shingle in the course above.
Step flashing is a rectangular piece of flashing bent 90 degrees in the center.
Step flashing redirects the water back onto the shingle.
Most flashing is 8 inches wide.
Step 6 make a 10 degree bend on the shingle edge of the flashing approximately 1 2 inch from the edge.
Use step flashing that has a 2 to 4 inch longer vertical leg than normal.
The metal flashing is formed with a hook edge and cleated on 12 centers.
Recaulk the joints between the roof and the flashing.
It is used for roof to wall flashing.
Flashing joints are lapped 6 in the direction of water flow.
Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape.
Sidewalls on roofs covered with asphalt shingles wood shingles shakes and slate should be flashed using step flashing like you see here.
Fasten loose nails and cover exposed nail heads with roofing cement.
