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Waterproofing an existing basement begins with excavating to the bottom sides of the footings. Once excavated, the walls are then power washed and allowed to dry. The dry walls are sealed with a waterproofing membrane, [3] and new drainage tiles (weeping tiles) are placed at the side of the footing.
Damp proofing is another aspect of waterproofing. Masonry walls are built with a damp-proof course to prevent rising damp, and the concrete in foundations needs to be damp-proofed or waterproofed with a liquid coating, basement waterproofing membrane (even under the concrete slab floor where polyethylene sheeting is commonly used), or an ...
A Formosan termite and waterproofing barrier installed on a foundation in Greenville, SC. Applications for termite membranes include on concrete foundation walls, ICF insulated concrete forms, under-slab waterproofing, under-sill plates, flooring underlayments, and as wall, window, and door flashings, among others. Most termite membranes must ...
A metal damp proof course (DPC) between the stone foundation and brick wall. Damp proofing in construction is a type of moisture control applied to building walls and floors to prevent moisture from passing into the interior spaces.
In areas below foundation level (subgrade areas), particularly those formed in concrete, vapor retarder placement can be problematic, as moisture infiltration from capillary action can exceed water vapor movement outward through framed and insulated walls. A slab-on-grade or basement floor should be poured over a cross-laminated polyethylene ...
Bituminous waterproofing systems are designed to protect residential and commercial buildings. Bitumen (asphalt or coal-tar pitch) is a material made up of organic liquids that are highly sticky, viscous , and waterproof. [ 1 ]
Cement boards may be classified as water resistant as they are not affected by water exposure; however, they do allow penetration and passage of water and water vapor. To waterproof cement boards, a liquid or membrane waterproofing material is applied over its surface. Cement boards should not be confused with gypsum core backer boards.
Wall flashing is typically found at interruptions in the wall, such as windows and points of structural support. Sill flashing (or sill pan) A concealed flashing placed under windows or door thresholds to prevent water from entering a wall at those points. Roof penetration flashing Used to waterproof pipes, supports, cables, and all roof ...
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