Polythene Sheet For Concrete

Oversite concrete slabs employ a 1000 guage 250 microns polythene sheet laid underneath the concrete to prevent the moisture from being absorbed.

Polythene sheet for concrete.

Today most experts feel very strongly that engineered films designed specifically for use as vapor retarders should be used as vapor retarders. 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.

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. Polyethylene sheeting under concrete slab. Starting with lower water cement ratio concrete will let the slab dry faster. Keep w c at or below 0 5.

It is recommended that the sheet should be at least 0 25 mm thick 1200 gauge. Under slab vapor retarders play a very important role in retarding moisture from coming up through the concrete and into the structure. Roadways must be properly and effectively protected for safety and long term reliability concrete. The general standard employed for the testing and verification of polythene sheets for use as a vapor barrier is the astm4397.

These products are made. The sheet is supplied in rolls 4 m wide by 25 m long.