Plastic Sheeting For 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.

Plastic sheeting for concrete slab.

Recently though research has shown that the old traditional layer of 6 mil visqueen polyethylene plastic under the slab is seldom effective for two main reasons. Condensed water pools wherever the plastic touches the slab but the concrete under the air pockets remains dry. Visit us today for the widest range of building construction products. This plastic can be used to cover crawl spaces and as a temporary cover for equipment and supplies.

Eventually polyethylene was invented. Covid 19 update to customers our metropolitan melbourne stores will remain open for trade customers only. When plastic sheeting or curing blankets are placed atop a concrete slab much of the blanket is in direct contact with the concrete but there are also wrinkles and air pockets where the plastic remains suspended just above the slab. 23rd sep 2016 08 58 am 7.

Plastic sheeting is a general purpose plastic film for use in a variety of construction and diy projects. You can build a framework around the concrete slab with lumber pvc pipes or rebar to hold the plastic sheeting. We encourage retail customers to use our click deliver or drive collect service. Although it may seem water tight this grade of material allows a lot of water vapor to pass through.

If the temperature is below 60 f use dark colored plastic sheets to absorb more light and boost the temperature. 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 under slab vapor retarders play a very important role in retarding moisture from coming up through the concrete and into the structure. Another method to prevent discoloration is to place dry straw directly onto the concrete then put the plastic on top of it.

A plastic polyethylene covering retains moisture in the concrete and improves temperature control. Commonly used under concrete slabs as a vapor barrier and on top of freshly poured slabs as a curing blanket. Wet the concrete then place the plastic sheeting over it. Since the crushed stone layer provides a fairly uniform substrate it also may also reduce the chance that a concrete slab will be poorly supported by random pockets of soft easily compressible soil.

If the ground is dry plastic prevents water from being sucked out of the concrete while curing. The hdx 20 ft.