MoistureBlock™ 6-mil Vapor Barrier Flooring Underlayment

  • Keeps moisture out
  • For use under all floating flooring
  • Includes an adhesive strip for overlap
100 Sq Ft30"x40'MB006300100


6-mil Vapor Barrier

6-mil Vapor Barrier

Blocks moisture to protect overlying flooring.

If you are looking for a test report please send an email to [email protected] and specify the product and type of report you are needing. We would be more than happy to email you a copy of any testing data that we have.

The MoistureBlock should be installed over the concrete, then the QuietWalk Luxury Vinyl with the film side up, and then your floor covering.

MoistureBlock can be used over concrete with an embedded heat system, provided the heating element is at least 1/2″ below the surface.

MoistureBlock has not been tested for use with adhesives. Verify with your adhesive manufacturer to see if they have a product that will bond to a polyethylene film.

MoistureBlock has not been tested for use in crawl spaces.

MoistureBlock is an effective vapor barrier approved for use under fully installed floor coverings.

MoistureBlock should be installed just prior to installing your floor covering.


Leave Review
by Chris M - Home Depot Review

Does the job!

No frills, works as intended.
by BirdinKeys - Amazon Review

Great underpayment for vinyl plank flooring

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