Ads
related to: polyethylene sheet under concrete slab contractors
Search results
Results From The WOW.Com Content Network
Asphalt or coal tar pitch, typically hot-applied to concrete roof decks along with reinforcement felts. Polyethylene plastic sheet, 4 or 6 thou (0.10 or 0.15 mm), 0.03 US perm (1.7 SI perm). Advanced Polyethylene vapor retarders that pass the ASTM E 1745 standard tests ≤0.3 US perm (17 SI perm).
A common example is polyethylene sheeting laid under a concrete slab to prevent the concrete from gaining moisture through capillary action. [5] A DPM may be used for the DPC. Integral damp proofing in concrete involves adding materials to the concrete mix to make the concrete itself impermeable. [4]
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 additive to the concrete.
Concrete roofing is composed of concrete reinforced with fibers of some sort. Structural concrete can also be used for flat roof constructions. There are three main categories, precast/prestressed, cast-in-place and shell. There are many types of precast/prestressed concrete roofing. The following are the most common types. [8]
Concrete is poured around these plastic forms to create internal voids in the slab A voided biaxial slab installation in Turkey. Voided biaxial slabs, sometimes called biaxial slabs or voided slabs, are a type of reinforced concrete slab which incorporates air-filled voids to reduce the volume of concrete required.
Faster construction than stick-built house. Less lumber required. Insulate acoustically. Impermeable to moisture. Can truck prefabricated panels to construction site and assemble on site. Create shell of solid insulation around house, while reducing bypasses common with stick-frame construction. The result is an inherently energy-efficient house.
Ad
related to: polyethylene sheet under concrete slab contractors