Vapor Barrier Under Insulated Concrete Slab

The home 19yrs old has a concrete slab on grade with a visqueen vapor barrier under the slab.

Vapor barrier under insulated concrete slab. The barrier s unique core material is an expanded polystyrene eps with a jobsite tough heavy duty poly film. A much better approach is a true vapor barrier with characteristics that conform to the requirements of astm e 1745 standard specification for water vapor retarders used in contact with soil or granular fill under concrete slabs. Why a plastic vapor barrier under concrete slab mondays withinstall the proper type of vapor barrier siouxland homesare vapor ers necessary for bats and garagesvapour barrier under concrete. Ecofoil under slab insulation is superior to traditional outdated forms of concrete floor insulation such as polystyrene or foam sheets.

Vapor barriers under concrete floor slabs. The gasket must be designed specifically for use with. In various places around the house we installed a gypcrete leveling course 1 2 5 8 and then a glued down engineered wood. Thin plastic like this is often called a vapor retarder meaning it slows the vapor down but doesn t stop it.

But they have also proven to. Rigid insulation concrete products like foam sheeting are easily broken and must be used with an extra vapor barrier plus standard foam or polystyrene concrete insulation does not stop radiant heat loss or gain. For a vapor barrier below a concrete floor slab most choose 6 to 10 mil polyethylene. The barrier under concrete thermal insulation and vapor retarder product family is a high performance simple to use and labor saving product for all of your under slab under concrete and radiant floor insulation projects.

Astm e 1745 is the most recognized industry standard for under slab vapor barrier retarders. Because extruded polystyrene insulating board will absorb little moisture the vapor barrier can be placed above or below the slab insulation. By steve ragan director research and technical services the answer to this controversial question from both angles is a qualified yes vapor barriers have been associated with certain concrete slab on grade problems including curling and cracking.