Proper Roof To Wall Flashing

Sidewalls on roofs covered with asphalt shingles wood shingles shakes and slate should be flashed using step flashing like you see here. Use the metal break tool to bend the flashing lengthwise in the middle according to the angle of the roof joint. 4 inches should go up the house wall and 4 inches should go on top of the porch roof shingles.

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Use step ﬂashing that has a 2 to 4 inch longer vertical leg than normal.

Proper roof to wall flashing.

Step 6 make a 10 degree bend on the shingle edge of the flashing approximately 1 2 inch from the edge. Renew flashing seals by chipping out old caulking and mortar along the edges of the flashing. Learn how to install it below. The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.

The flashing extends up the wall at least 4. Step flashing is a rectangular piece of flashing bent 90 degrees in the center. Multiple pieces of the flashing will be installed in layers with shingles to ensure the water flows away from the wall. Even if one piece of step flashing fails the flashing and shingle below it start the process over again.

Flashing joints are lapped 6 in the direction of water flow. Recaulk the joints between the roof and the flashing. Badly corroded flashing will need to be replaced. Most flashing is 8 inches wide.

Storm proof roof 2. At roof to wall intersections see figure 1. Fasten loose nails and cover exposed nail heads with roofing cement. Step flashing redirects the water back onto the shingle.

The metal flashing is formed with a hook edge and cleated on 12 centers. 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. Roofing cement can dry out and crumble away exposing joints to water. Do not seal housewrap or building paper to step ﬂashing.

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. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling. How to install roof flashing against a wall.

It is used for roof to wall flashing. Tape the top of step ﬂashing with 4 inch wide minimum self adhering modiﬁed bitumen roof tape.