Ensure the vent is nailed at each edge 2 in.
How to flash a shed roof to a wall.
Two ways to flash roof edges.
One common method is to lay the edge metal under the eaves membrane and over the rake.
In this video isaac illustrates installation of an 18 w.
Above the roof sheathing.
Details roofing wrb flashing.
The base flashing or apron flashing is the bottom piece.
That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above.
It is used for roof to wall flashing.
Placed opposite to base flashing or above base flashing counter flashing completes the two part team.
If installed along the foundation the membrane should cover the joint where the sill meets the foundation.
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.
Above a lower roof where it abuts the wall in all cases make sure to detail the flashing membrane so that it sheds water.
Nail length should penetrate through roof decking.
Iws is used in conjunction with step flashing or 4x5 wall flashing to create a water tight junction.
Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.
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.
The rough side will be down against the roof and wall and nailed at 2 in from ends along the black nail line in the fabric and two nails evenly spaced between them.
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.
Because most roof flashing is required to extend up the wall a minimum of 4 and some a minimum of 5.
Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it.
I cut the tape so that it laps onto the housewrap above and 3 in.
To do the job properly the flashing should go right through the block wall and thereby keep the lower wall dry.
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.
To install the roof wall flashing above the builder bent the top edge of the flashing into a 90 degree lip about 2 cm in width.
Step flashing is a rectangular piece of flashing bent 90 degrees in the center.
It should tuck under the sheathing wrap above and over the flashing below.
