Plastic Under Concrete Slab

A much better approach is a true vapor barrier with characteristics that conform to the requirements of astm e 1745 standard specification for water vapor retarders used in contact with soil or granular fill under concrete slabs.

Plastic under concrete slab.

The black plastic sheet that the reinforcement is sitting on is the vapor barrier. Aci standard 302 1 r 96 guide for concrete floor and slab construction included this recommendation in section 4 1 5. A concrete vapor barrier is simply a sheet of polyethylene plastic visqueen placed directly on top of the sub grade before the concrete floor or slab is poured to help keep moisture from the soil from passing up through the concrete. Covid 19 update to customers our metropolitan melbourne stores will remain open for trade customers only.

Thin plastic like this is often called a vapor retarder meaning it slows the vapor down but doesn t stop it. We encourage retail customers to use our click deliver or drive collect service. Beginning in 1989 the american concrete institute aci recommended the installation of a 4 inch layer of granular material between a sub slab vapor retarder and a concrete slab. Why a plastic vapor barrier under concrete slab mondays withinstall the proper type of vapor barrier siouxland homesare vapor ers necessary for bats and garagesvapour barrier under concrete.

Waffle slabs require vapour barriers too and here are some photos that show a few waffle slabs with vapour barriers again before the concrete is poured. Florprufe vapor barriers gcp lied concrete vapor barriers the pros vapor barrier under concrete slab vapour barrier concrete floor problems building concrete vapor barrier what is a. Vapor barriers under concrete floor slabs. This plastic sheet is in direct contact with the concrete as it should be in a rational world.

If a vapor barrier or retarder is required. Visit us today for the widest range of building construction products.