The barrier comes in rolls about twenty four inches wide.
Moisture barrier for concrete subfloor.
Vapor barriers come in two types 6 mil vapor barrier roll.
Vapor barriers are a way to keep moisture from getting into the concrete.
The presenter is using 6 mil thick poly barrier.
If you have a concrete floor that s in continuous contact with a source of moisture you re going to have problems.
This video describes the process of installing a moisture barrier over a concrete subfloor.
Check the moisture level of the subflooring using a moisture meter.
The reason is quite simple.
For optimal moisture control you will want to overlap the poly barrier by at least six inches.
With your concrete subfloor you will need either a standard foam underlayment with a moisture barrier film or a 2in1 underlayment with moisture barrier already installed.
Determine your starting wall.
If you have a plywood subfloor over a concrete slab check the moisture level of both floors.
A vapor barrier is not the same as an underlayment.
Compare the results against the manufacturer s specifications for moisture limits.
You will lay the flooring lengthwise to this wall.
This is why a vapor barrier under concrete is essential.
Snap the chalk line over the top of the concrete or moisture barrier between the marks on opposite walls making a cross in the center of the room.
The concrete subfloor must be sufficiently strong to safely support the flooring furniture and people in the room.
Usually buying the 2in1 is an easy and more economical option.