Polythene Sheet For Concrete Slab

Vapor barriers also block gases such as methane or radon.

Polythene sheet for concrete slab.

Radon is the second leading cause of lung cancer in the u s according to the american lung association. A vapour barrier in concrete slabs full basements and crawl space construction. However this list is a summary of current applications. These products are made.

The general standard employed for the testing and verification of polythene sheets for use as a vapor barrier is the astm4397. Typical 8 mil polyethylene sheeting costs 5 to 7 cents per square foot. Keep w c at or below 0 5. Under slab vapor retarders play a very important role in retarding moisture from coming up through the concrete and into the structure.

Today most experts feel very strongly that engineered films designed specifically for use as vapor retarders should be used as vapor retarders. Polyethylene sheeting under concrete slab. 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. Starting with lower water cement ratio concrete will let the slab dry faster.

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. As polyethylene is a relatively new plastic scientists are busily exploring and developing new applications for the products.