Polythene Sheet For Concrete

Polyethylene sheeting under concrete slab.

Polythene sheet for concrete. Under slab vapor retarders play a very important role in retarding moisture from coming up through the concrete and into the structure. Starting with lower water cement ratio concrete will let the slab dry faster. Polythene sheet roadway expansion projects must fill a number of requirements to minimise environmental impact. The general standard employed for the testing and verification of polythene sheets for use as a vapor barrier is the astm4397.

Polythene or polyethylene sheet is commonly used as a damp proof membrane with oversite concrete for all but severe conditions of dampness. Oversite concrete slabs employ a 1000 guage 250 microns polythene sheet laid underneath the concrete to prevent the moisture from being absorbed. Typical 8 mil polyethylene sheeting costs 5 to 7 cents per square foot. The sheet is supplied in rolls 4 m wide by 25 m long.

Radon is the second leading cause of lung cancer in the u s according to the american lung association. 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. Roadways must be properly and effectively protected for safety and long term reliability concrete. These products are made.

Polythene sheet we are the leading manufacturer of ldpe sheet for construction and our product is made of good quality. Vapor barriers also block gases such as methane or radon.