Plastic Sheeting Around New Construction Slab

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

Plastic sheeting around new construction slab.

Plastic sheeting or vapor retarder. Place heavy duty plastic sheeting 6 mil. Many moisture problems associated with interior concrete floors and slabs on grade can be minimized or eliminated by installing a vapor barrier under the concrete. Wet the concrete then place the plastic sheeting over it.

Polyethylene or a vapor retarder on top of the gravel to prevent the soil gases from entering the house. This heavy duty plastic can be used to cover crawl spaces and as a temporary cover for equipment and supplies. Plastic sheeting is a general purpose plastic film for use in a variety of construction and diy applications. 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.

The hdx 20 ft. Plastic the hdx 20 ft. Another method to prevent discoloration is to place dry straw directly onto the concrete then put the plastic on top of it. The order upwards for the slab is.

In cold weather a sheet of poly on the interior side of a wall probably won t cause any problems. The plastic would start about 8 up the wall sheathing run down the exterior face of the slab turn over the top of the foundation and then run about a foot or two away from the house. 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. These membranes use pressure equalization figure 3 to address vapor transmission.

An airspace is provided over the top of a wet concrete slab. With really trashed concrete floor systems a pretty much bullet proof repair approach and not too shabby for new construction either is the use of dimpled plastic sheet membranes photograph 10 and photograph 11. 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. You can build a framework around the concrete slab with lumber pvc pipes or rebar to hold the plastic sheeting.

The sheeting also keeps the concrete from clogging the gravel layer when the slab is poured. Thinking of installing 6mil plastic sheating around the perimeter of my walkout basement slab to help with waterproofing.