6 Mil Polyethylene Film - Moisture Barrier and Vapor Barrier Underlayment for All Floors

(3 reviews) Write a Review
  • 6 Mil Polyethylene Film - Moisture Barrier and Vapor Barrier Underlayment for All Floors
  • 6 Mil Polyethylene Film - Moisture Barrier and Vapor Barrier Underlayment for All Floors
Frequently bought together:


MoistureBlock is a low density Polyethylene film that can be used during the installation process with floating laminate and engineered wood floors. No need to bother with large fold-out, low quality, off-spec, construction grade films, which are bothersome and hard to use before the floor is installed.

MoistureBlock is also recommended for use with pre-attached floating wood floors in which the padding is attached to the floor during the manufacturing process. While installing a pre-attached padded floor, it is recommended to also install a moisture resistant film over concrete or any substrait where moisture is a concern.

  • Made with 100% polyethylene for long-lasting moisture protection
  • Designed for use over most types of subfloors
  • Helps protect wood or laminate floor from harmful subsurface moisture
  • Covers 100 sq. ft.; roll measures 40 ft. x 30 in.
  • Roll the film out and tape all seams for easy installation

Installation Instructions

  1. Before rolling out the underlayment, be sure to sweep, vacuum, and remove all debris on the substructure.
  2. Fill in any significant holes, gaps or breaks that may exist on the substructure.
  3. Roll out the Underlayment over the substructure surface.
  4. Splice each roll of underlayment with a 3 mil tape, duct tape, or similar pressure-sensitive tape that meets/exceeds the water vapor transmission ratings suggested by the flooring manufacturer.
  5. If installing MoistureBlock Film Underlayment with Self-Sealing film edge, simply connect the rolls by removing the liner from the tape and adhere to the edge of the previous roll.
  6. Always be sure to connect the film rolls together with the adhesive tape evenly so that there are no gaps between the adjoining rolls of film.
View AllClose

Additional Information

For Use With:
All Flooring
Sq Ft Coverage:
Attached Vapor Barrier:
Compression Resistant:
Moisture Resistant:
Mold and Mildew Resistant:
Radiant Heat:
View AllClose

3 Reviews

  • 5
    So far so good

    Posted by Christopher on 21st Apr 2021

    I had this installed under my laminate flooring in the basement about 3 months ago. There are no signs of moisture getting through. Works great so far!

  • 5
    Worked great

    Posted by Rodney on 8th Dec 2020

    Worked great under my Mannington luxury vinyl planks. Feels like a thick high quality plastic!

  • 5
    Easy installation

    Posted by Karen L. on 8th Apr 2020

    Easy to roll out. The provided adhesive makes overlapping and sealing simple.

View AllClose