A vapor barrier consists of one or more layers of sheet plastic 6 mil visqueen on top of the soil in the crawlspace or basement.
Is 6mil plastic sheet ok for crawl space.
Cut the sheets to size allowing 12 inches or more along walls.
Roll out and cut plastic sheets.
Because excessive dampness in a crawlspace or basement can condense you can install a vapor barrier to protect floor framing from becoming damp and covered with fungus efflorescence and rot.
This heavy duty plastic is commonly used under concrete slabs as a vapor barrier on top of freshly poured slabs as a curing blanket and as a temporary cover for equipment and supplies.
Clear vapor barriers are typically constructed of polyethylene.
Thinner sheeting may be more pliable but generally is not sufficient as a barrier against vapor or moisture.
While some sources may recommend a thickness of six mil a thicker grade of material is preferable.
Barricade s 6 mil plastic sheeting is a general purpose plastic film for use in a variety of construction gardening and diy applications.
Dura skrim 6wb 6 mil white on one side and black on the other is an economical reinforced film plastic designed for applications requiring puncture resistance and high tear strengths.
The perm rating represents how readily water vapor will pass through a material.
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A heavy duty scrim reinforcement diamond patterned layer of reinforced string laminated between two layers of high strength polyethylene film results in.
Codes for residential applications often cite a 6 mil 0 006 inch thick minimum reinforced poly vapor barrier.
However americover recommends 10 mil or higher for crawl space applications.
Beginning at one side of the crawl space lay down 6 mil or thicker polyethylene plastic over the entire crawl space.
For best results remodeler tim carter of the online site ask the builder recommends 10 mil high density cross laminated virgin polyethylene which lacks the pinholes and imperfections of 6 mil.
Americover offers thicknesses all the way up to 20 mil.
The polyethylene is shaped in thin sheets commonly sold in a roll form.