Polythene Sheet For Concrete Slab

However this list is a summary of current applications.

Polythene sheet for concrete slab. Radon is the second leading cause of lung cancer in the u s according to the american lung association. Under slab vapor retarders play a very important role in retarding moisture from coming up through the concrete and into the structure. These products are made. 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. Today most experts feel very strongly that engineered films designed specifically for use as vapor retarders should be used as vapor retarders. 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. Keep w c at or below 0 5.

Vapor barriers also block gases such as methane or radon. Polyethylene sheeting under concrete slab. This is because polyethylene allows the passage of oxygen and carbon dioxide. The order upwards for the slab is.

A vapour barrier in concrete slabs full basements and crawl space construction. As polyethylene is a relatively new plastic scientists are busily exploring and developing new applications for the products.