How To Install Vapour Barrier On Concrete Floor

A vapour control layer or vcl for short is a plastic layer that restricts the movement of warm moist air from inside a property into the fabric of the building.

How to install vapour barrier on concrete floor.

Before rolling out the underlayment be sure to sweep vacuum and remove all debris on the substructure. Wrap vapor barrier up edge of wall 3 4 inches and tape to wall. May be higher check job specifications or building codes. While plain plastic sheeting is commonly used to make vapor barriers these traditional poly barriers will allow water and vapor to pass.

A vapor barrier against the concrete surface is generally recommended before wood framing or flooring materials are installed. When rolling out the moisture barrier you want to go from wall to wall and cover the entire floor. Install a plastic vapor barrier. Always read the flooring manufacturers recommendations and instructions before installing the underlayment.

A vapor barrier can also increase your home s energy efficiency. The barrier comes in rolls about twenty four inches wide. What is a vapour control layer how do they work. In this guide we look at how vapour barriers work why you need them and how to install them.

If your concrete passes the moisture test then plastic sheeting at least 6 mils thick will prevent moisture from getting into your laminate flooring. Using a utility knife cut the length long enough to wrap edges up the wall 3 4 inches. Below grade walls and floor slabs transmit ground moisture through concrete walls or slabs. How to install vapor barrier on concrete floor under laminate flooring.

Crawl spaces benefit from a polyethylene moisture barrier placed directly over the exposed earth. For more information about this video or fausfloor products visit www fa. Tips for concrete floor vapor barrier installation. For optimal moisture control you will want to overlap the poly barrier by at least six inches.

This video demonstrates how to install a moisture barrier over a concrete subfloor. The presenter is using 6 mil thick poly barrier. With a little effort you can install this helpful device yourself. Where plastic sheets must be joined overlap the sheets by several inches and use strong vinyl tape to secure them.