The base flashing or apron flashing is the bottom piece.
How to flash a shed roof to a wall.
It should tuck under the sheathing wrap above and over the flashing below.
It is used for roof to wall flashing.
Nail the vent to the wall with matching spacing of nails.
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.
Nail length should penetrate through roof decking.
Above this start your wall strapping and cladding.
Flexible flashing tape seals the eave to the wall.
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.
Above this install a counter flashing back on your sheathing with a return wide enough to allow air movement.
The roof flashing is then placed up behind this through the wall z bar flashing on the outside of the vertical blocking backing material.
Most simply use a nominal 6 piece of lumber.
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.
Placed opposite to base flashing or above base flashing counter flashing completes the two part team.
I cut the tape so that it laps onto the housewrap above and 3 in.
That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above.
Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it.
Two ways to flash roof edges.
Ensure the vent is nailed at each edge 2 in.
I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall.
In this video isaac illustrates installation of an 18 w.
Step flashing is a rectangular piece of flashing bent 90 degrees in the center.
Above the roof sheathing.
Details roofing wrb flashing.
If installed along the foundation the membrane should cover the joint where the sill meets the foundation.
Above a lower roof where it abuts the wall in all cases make sure to detail the flashing membrane so that it sheds water.
One common method is to lay the edge metal under the eaves membrane and over the rake.
To do the job properly the flashing should go right through the block wall and thereby keep the lower wall dry.
Iws is used in conjunction with step flashing or 4x5 wall flashing to create a water tight junction.
