How To Flash A Shed Roof To A Wall

Nail length should penetrate through roof decking.

How to flash a shed roof to a wall. Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it. Above a lower roof where it abuts the wall in all cases make sure to detail the flashing membrane so that it sheds water. Ensure the vent is nailed at each edge 2 in. It should tuck under the sheathing wrap above and over the flashing below.

Step flashing is a rectangular piece of flashing bent 90 degrees in the center. Because most roof flashing is required to extend up the wall a minimum of 4 and some a minimum of 5. That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above. If installed along the foundation the membrane should cover the joint where the sill meets the foundation.

Above this start your wall strapping and cladding. In this video isaac illustrates installation of an 18 w. The roof flashing is then placed up behind this through the wall z bar flashing on the outside of the vertical blocking backing material. Details roofing wrb flashing.

The base flashing or apron flashing is the bottom piece. Flexible flashing tape seals the eave to the wall. Above the roof sheathing. I cut the tape so that it laps onto the housewrap above and 3 in.

Two ways to flash roof edges. Placed opposite to base flashing or above base flashing counter flashing completes the two part team. I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall. Nail the vent to the wall with matching spacing of nails.

Most simply use a nominal 6 piece of lumber. Above this install a counter flashing back on your sheathing with a return wide enough to allow air movement. Vent the shed roof by installing the end wall flashing on top of strips of your wall strapping cut the same height as the vertical leg of the flashing. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.

The flashing only going part way into the wall will merely stop excess water running down the outside of the wall and between the wall and roof. One common method is to lay the edge metal under the eaves membrane and over the rake. It is used for roof to wall flashing. To do the job properly the flashing should go right through the block wall and thereby keep the lower wall dry.