How To Install Roof Flashing Against A Brick Wall. Metal roof flashing can be use to seal gaps between roof walls. For areas where the walls meet the roof, you will need to use the step flashing technique, but you will need kickout flashing in other areas.
If the flashing is being installed is against a brick wall then the flashing should sit against the wall and have a layer of asphalt cement between it and the wall.
Place a second 90 degree elbow against the brick wall, in the location you wish the straight portion of downspout to begin. Roof flashing is a thin material, usually galvanized steel, that professional roofers use to direct water away from critical if there were no flashing against these walls, water could slowly drip into the crevice between the wall and the roof. Flashing helps close a joint in walls or roofing applications to keep water from seeping into the materials used in construction. The main reason to go with brick, however, is the advantage of being able to do it yourself, with a little help from some professionals.