Install base flashing under shingles or over metal roofing material.
Metal roof against wall.
In this case we ve gone against new construction.
Since most ordinary homeowners do not have all the necessary know how or significant knowledge of basic roofing principles along with experience of working on an actual roof all day in the sun with the sweat pouring down the face as you work on flashing all the dormers chimneys and roof vents or shingling away for hours on end and doing it right taking on the installation of a metal roof.
These kinds of houses often have a roof that butts against a wall.
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 video shows how to install endwall flashing with standing seam panels.
The main problem with this as i see is getting the angle of the abutment sheet correct.
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.
It s also important to try and blow away the metal shavings.
105 degrees for my 15 degree pitch roof.
The shank of the fastener is visible.
Normally this wall would have a house wrap on it like tyvek.
Follow the photo for illustrated instructions.
Metal roof flashing is a galvanized sheet metal bent at right angles with about eight to 12 inches on each side of the angle.
Or to use angled 150x150mm metal sheet fixing it down on the metal roof using stitching screws and then flashing it against the wall using flashing tape.
Proper roof wall abutment flashing examples.
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Metal roof flashing can be use to seal gaps between roof walls.
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It is commonly used in two story and side split houses.
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.
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.
