Roof To Wall Siding Flashing

For deck flashing.

Roof to wall siding flashing. Above the roof sheathing. I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall. However the typical recommended width of step flashing ranges from 5 inches to 10 inches. Run roofing felt up the wall about an inch higher than the wall side.

Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it. Use the metal break tool to bend the flashing lengthwise in the middle according to the angle of the roof joint. Install the kickout flashing. If your house has a roof line that extends past a corner of two walls make the first piece of step flashing a corner.

Do not seal housewrap or building paper to step flashing. Use step flashing that has a 2 to 4 inch longer vertical leg than normal. It is used for roof to wall flashing. The flashing needs to be installed before installing the roof shingles the metal flashing is formed with a hook edge and cleated on 12 centers the flashing extends up the wall at least 4 the flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.

I made this video this morning and i hope it help explain the flashing wall detail where the siding meets the roof. A 5 inch wide flashing will result in a 2 1 2 roof deck flange and 2 1 2 vertical wall flange. Flexible flashing tape seals the eave to the wall. Likewise a 10 wide flashing will result in a 5 inch wide roof deck flange and a 5 inch vertical flange.

Install roofing felt before starting step flashing. The roofing contractors usually try to slide the roof flashing up behind lapped siding but many times this can be a chore and sometimes the exterior wall covering and or the existing water resistive barrier house wrap gets damaged in the process. Step flashing is a rectangular piece of flashing bent 90 degrees in the center. Most flashing is 8 inches wide.

Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape. Kickout flashing installs just like standard step flashing except that half of the kickout flashing hangs over the edge of the roof. Learn how to install it below. Multiple pieces of the flashing will be installed in layers with shingles to ensure the water flows away from the wall.

4 inches should go up the house wall and 4 inches should go on top of the porch roof shingles. Step 6 make a 10 degree bend on the shingle edge of the flashing approximately 1 2 inch from the edge.