I m picturing a 2 story brick home with a pitched roof above it and on the gable wall a single story addition or bump out.
Ridgeline and brick wall and sloped roof.
Proper roof wall abutment flashing examples.
As a result most typical construction does not use any type of through the wall flashing which results in leaky wall complaints.
When the roof of an addition garage porch or patio meets a brick wall the intersection creates a number of concerns.
Expensive to convert a mono pitched roof to a multi slope roof since all walls need to become the same height.
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Snow can build up against the lower roof wall and cause dampness or rot in the wall.
A piece of counterflashing can be used to cover the transition from roof deck to brick wall.
Sheds rain and snow quickly.
A roof with one slope historically attached to a taller wall.
Also as a side note builders always get in trouble with drainage on veneer brick walls over roofed areas.
Caldwell contracting is a roofing contractor and disclaims liability for any difficulties or loss due to lack of knowledge of masonry and framing systems.
Metal roof flashing is a galvanized sheet metal that is bent at a 90 degree angle about 8 to 12 inches on each side of the angle.
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If the vertical leg of the angle is properly fastened to the upper stud wall beam then you need nothing underneath the horizontal leg of the angle.
It comes in 10 foot lengths or for step flashing 6 inch lengths.
It is used to seal the gap between walls and intersecting roofs.
How to frame a roof against a brick wall.
Block bolted to mtl.
A higher wall on one side for ladders or storage.
Why could you not build the main house and then treat the wing as an addition bolting the wing roof rafters and the walls next to the house through the brick and foam to the stud wall of the main house.
The current flashing details in the 2013 international residential code irc for sloped roof wall intersections are very difficult to construct.
Mono pitched roof shed skillion lean to roof.
Clear roof space without truss or rafters.