Plastic Sheet Under Concrete Slab

Commonly used under concrete slabs as a vapor barrier and on top of freshly poured slabs as a curing blanket.

Plastic sheet under concrete slab.

Aci 302 1 guide for concrete floor and slab construction states that the minimum thickness of an effective vapor barrier is 10 mils. Almost everywhere except california that slabs are placed on the ground a plastic sheet a vapor barrier is located directly under the concrete slab and on top of the ground photograph 1. Thinner plastic can t stand up to the abuse of construction. 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.

Plastic sheeting serves as a moisture barrier. This extra heavy duty plastic can be used under concrete slabs as a vapor barrier and on top of freshly poured slabs as a curing blanket. Undisturbed soil crushed stone 4 inches of type i eps 6 mil polyethelene sheet another 4 inches of type i eps and then the 4 inch concrete slab for a total insulation value of r30. One laboratory drying study indicated that 4 in.

The hdx 20 ft. The order upwards for the slab is. This plastic can be used to cover crawl spaces and as a temporary cover for equipment and supplies. This was verfied by some field studies conducted by concrete construction magazine.

If you put a moisture barrier like plastic under the concrete in an open carport or other open structure such as driveways it will. The rate that moisture escapes from a slab depends on the concrete w c the density of the finish the ambient conditions above the slab and the moisture below the slab. Plastic sheeting is a general purpose plastic film for use in a variety of construction and diy projects. Today most experts feel very strongly that engineered films designed specifically for use as vapor retarders should be used as vapor retarders.

Plastic sheeting is a general purpose plastic film for use in a variety of construction and diy projects. Concrete is permeable and moisture from the ground can penetrate and dampen it causing higher energy costs to heat and cool as well as possible damage to carpets and other things touching the concrete one caveat.