Polythene Sheet For Concrete

The sheet is supplied in rolls 4 m wide by 25 m long.

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 we are the leading manufacturer of ldpe sheet for construction and our product is made of good quality. Polythene or polyethylene sheet is commonly used as a damp proof membrane with oversite concrete for all but severe conditions of dampness.

Vapor barriers also block gases such as methane or radon. These products are made. Today most experts feel very strongly that engineered films designed specifically for use as vapor retarders should be used as vapor retarders. Radon is the second leading cause of lung cancer in the u s according to the american lung association.

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. Polythene sheet roadway expansion projects must fill a number of requirements to minimise environmental impact.

It is recommended that the sheet should be at least 0 25 mm thick 1200 gauge. Oversite concrete slabs employ a 1000 guage 250 microns polythene sheet laid underneath the concrete to prevent the moisture from being absorbed.