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The design and installation of masonry wall flashings. … Wall flashings are typically required at locations where the downward flow of water inside the wall would be obstructed or interrupted. Flashings are also used under masonry copings, sills, and other horizontal surfaces.
Flashing must be located beneath the first course of masonry above the finished ground level above the foundation wall or slab and at other points of support, including structural floors, shelf angles, and lintels when masonry veneers are designed per Section R703.
Flashing is layered protection You can count on one thing-water flows unerringly toward the ground. And as it travels, flashing carries it safely over the inevitable crevices, cracks and gaps in the building’s exterior.
Description: Through-wall flashing is used to divert moisture, which has entered the wall, to the outside, before it can cause damage. This flashing method is considered the most satisfactory method of preventing leaks except in areas exposed to earthquakes.
Head flashings are used to direct water away from openings such as windows and doors. Head flashings should be installed with a positive slope to the exterior.
Galvanized Steel Z–Flashing is made from 28-Gauge galvanized steel. It is used to protect the horizontal joints between sheets of siding from water infiltration. … Water Table Flashing, also known as Drip Cap, protects the top of exterior windows and doors from water infiltration.
Best Practice Solutions
Originally, asphalt-laden felt paper was thought to be the best type of house wrap on the market. In fact, it’s still available, along with other house wrap solutions. However, Dupont’s Tyvek HomeWrap® is considered by most in the building profession to be the industry leader.
Vinyl siding has seams between the pieces. … Two things to keep in mind: if the siding is properly installed, what you’ll likely see behind the siding is a weather wrap (e.g. tyvek). And installing siding on a stone surface is likely to leave hundreds of screw holes that would take a lot of effort to patch.