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Shaped like a “U” or channel to catch water (e.g., where the edge of a tile roof meets a wall). Through wall flashing Spans the thickness of the wall and directs water to weep holes. Cap flashing (drip cap) Often used above windows and doors. Drip edge A metal used at the edges of a roof. Step flashing (soaker, base flashing)
In building construction, weeps are typically found in a masonry veneer or cavity wall, just above the flashing. The cavity serves as a way to drain this water back out through the weep holes. The weep holes allow wind to create an air stream through the cavity. The stream removes evaporated water from the cavity to the outside.
Metal flashing usually extends from the interior wall through the outer wall and a weep hole with a downward curve allows the water to drain. Flashing systems in cavity walls are typically located close to the base of the wall, so that it will collect the water that goes down the wall.
For water to enter a wall first the water must get onto the wall and the wall must have openings. Water can then enter the wall by capillary action, gravity, momentum, and air pressure (wind). [2] The rainscreen system provides for two lines of defense against the water intrusion into the walls: The rainscreen and a means to dissipate leakage ...
It can occur through walls, roofs, or through openings (e.g. window reveals). [1] Water will often penetrate the outer envelope of a building and appear inside. Common defects include: Roof defects such as faulty flashing, cracked or missing slates or tiles. Faults in the brickwork or masonry such as missing or cracked pointing. Porous bricks ...
A private contractor struck a 16-inch pressurized water line, she said. County crews isolated where the pipe was hit and stopped the active spill. By 7:30 p.m., the pipe had been repaired, and ...
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