Roberts 100 sq. ft. Unison Premium 2-in-1 Underlayment-70-025 - The Home Depot


Model # 70-025

Internet # 100541278

Store SKU # 628000

100 sq. ft. Unison Premium 2-in-1 Underlayment

Roberts 100 sq. ft. Unison Premium 2-in-1 Underlayment

This item has been discontinued.
The Home Depot no longer carries this specific product.

$0.25 / sq. ft.
$24.97/  roll  (covers 100.0 sq. ft.)


Model # 70-025

Internet # 100541278

Store SKU # 628000

Roberts Unison 2-in-1 Underlayment for Laminate and Engineered Wood Flooring is designed with 3/32 in. polyethylene foam for cushioning and a 2 mil thick top film to protect from harmful moisture vapor. This product is designed for on or above grade installations. Unison's foam construction also reduces everyday surface noise. It's easy to install with a plastic overlap and adhesive strip to join multiple rolls.

  • For use under laminate and engineered wood flooring
  • Dense, closed cell structure offers moisture, mold and mildew resistance
  • Ideal for use over radiant heated floors
  • Offers cushioning, along with a reduction in sound transference
  • Easy installation with plastic overlap and adhesive strip
  • 2 mil top sheet protects from harmful moisture vapor
  • Adhesive strip and overlap make it easy to join rolls during installation
  • Has a heat flow resistance R-Value of 0.29
  • 100 sq. ft. coverage with roll measuring 48 in. x 25 ft.

Info & Guides

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Assembled Depth (in.)  300 in  Assembled Height (in.)  .09375 in 
Assembled Width (in.)  48 in  Product thickness (mil)  2.38 
Recommended overlap (in.)  Roll length (ft.)  25 
Roll width (in.)  48 
Antimicrobial  No  Commercial / Residential  Commercial / Residential 
Cushioning  Yes  Flooring Product Type  Underlayment 
Flooring type(s) used with  Laminate  Material  Plastic 
Moisture control included  Yes  Package coverage (sq. ft.)  100 
Returnable  90-Day  Sound absorbing  Yes 
Subflooring type  Any 
Warranty / Certifications
Manufacturer Warranty  To be free from manufacturing defects 


Rated 4.5 out of 5 by 100 reviewers.
Rated 5 out of 5 by Very good between floor layers. This is what I used between the Dri-Core subfloor and the laminate flooring. The main reason I used it is because I didn't want to lay the laminate right on top of the subfloor without something between them. I also wanted to reduce noise and creat an additional barrier. It works great and I recommend. March 31, 2009
Rated 4 out of 5 by Great Preventing moisture is really good for an underlayment for floating floors to prevent mold. Good idea. June 7, 2008
Rated 5 out of 5 by The instructions was easy to read and it was easy to lay down on the floor November 14, 2008
Rated 5 out of 5 by Underlayment at the right price and quality I used this underlayment in conjunction with black 6 mil moisture barrier, for laminate flooring. Roberts under-layment does provide 2 mil moisture barrier which should be adequate for most non concrete sub floor app- lications. My kids enjoyed laying the underlayment. The finished floor feels and sounds nice. I would suggest buying some regular duct tape as well. It is rather easy while installing your laminate to inadvertently scratch and puncture your underlayment. June 15, 2011
Rated 5 out of 5 by Easy to install The underlayment was easy to install and does a great job insulating sound with my laminate floor on top of concrete August 21, 2013
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