Below are two photographs of roof wall step flashing completed and effective of a slate roof against a brick wall below left and in process with step flashing against a dormer sidewall before the dormer siding has been put in place below right.
Roofing against wall.
Flat roof and flashing against brick wall install base flashing under shingles or over metal roofing material.
A roof or wall that is not properly sealed off from water can be extremely costly to fix not to mention the hassles that accompany the unwanted water.
If the roof runs flat up against the brick wall you must install the roof side of the flashing either under the last layer of shingles or over the roof material if it is metal.
This flashing is typically field fabricated from a sheet of 26 ga.
Step flashing is used to provide a water tight connection where roofing adjoins a vertical juncture.
How to install roof flashing against a wall with a corner when there is a corner where the roof meets the wall you will need a corner flashing piece.
For areas where the walls meet the roof you will need to use the step flashing technique.
The flat roofing material must go up the wall a minimum of 12 or up the wall and over the top of the wall if the wall is less than 12 high.
Proper roof wall abutment flashing examples.
Follow the photo for illustrated instructions.
Here is an attempt though maybe not a very good one to make the roof flashing serve also as a through the wall flashing with a tile roof.
Posted march 4 2017 filed under roof installation roof repair maintenance.
A corner flashing piece can either be bought from the hardware store or it can be made using a regular step flashing piece.
