In this case we ve gone against new construction.
Flashing metal roof to brick wall.
Install metal counterflashing onto the face of the block extending it down to about inch above the shingles.
The shank of the fastener is visible.
How to install metal roof flashing against brick step 1.
Bigger step flashing is better.
Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer.
Once the roofing and step flashing are in place complete the counterflashing at the masonry as follows.
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.
Finally the housewrap can be laid up on the wall to cover the top of the kickout diverter and step flashings.
The narrower step flashing just isn t wide enough to protect the intersection fully.
If the roof runs flat up against the brick.
Install base flashing under shingles or over metal roofing material.
The masons should add a bond break layer to keep mortar droppings from creating dams behind the brick.
Normally this wall would have a house wrap on it like tyvek.
Flashing joints are lapped 6 in the direction of water flow.
Metal roof flashing is a galvanized sheet metal bent at right angles with about eight to 12 inches on each side of the angle.
Flashing is installed to surround roof features such as vents chimneys and skylights.
It s also important to try and blow away the metal shavings.
Hot and cold weather will make the caulk fail when the metal buckles between nails.
Continue reading below our video of the day step 1 choose what kind of metal flashing you need.
The first of three labeled not good ids the least desirable way to set flashing to a wall but it is done everywhere.
The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.
Because most roof flashing is required to extend up the wall a minimum of 4 and some a minimum of 5.
Usually 8 inch flashing will work but any size will work well.
I recommend 12 in wide step flashings bent for a 5 in.
You can hire a professional to install it against a brick wall or you can do it yourself.
There you have a z trim and an end wall flashing that have been joined using a stitch screw.
The flashing extends up the wall at least 4.
It is simply a piece of metal liad to the wall and held in place with masonry nails and caulked.
Most important make sure weep vents are included in the mortar at each pan without a way for water to escape all the fancy flashing is for nothing.
