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 101 reviewers.
Rated 5.0 out of 5.0 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 4.0 out of 5.0 by Great Preventing moisture is really good for an underlayment for floating floors to prevent mold. Good idea. June 7, 2008
Rated 5.0 out of 5.0 by The instructions was easy to read and it was easy to lay down on the floor November 14, 2008
Rated 5.0 out of 5.0 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 5.0 out of 5.0 by GREAT VALUE!!! I just installed this underlayment in my front bedroom and had no problems. This is a very good product and a great value. It went down with no problems. The seams sealed perfectly to form a nice seal over the entire floor. I would highly recommend this product and plan to use it again in the near future. I see absolutely no reason to spend a huge amount of money for an underlayment and this product proves my point. June 25, 2012
Rated 5.0 out of 5.0 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
Rated 5.0 out of 5.0 by Great Price, Good Product Why pay more for gimics? This stuff worked great, helped to dampen the sound and gave noticable cusion. Its actually pretty tough stuff. The trick to not getting rips is to lay the underlayment as you go. Unroll a strip of underlayment, then the floor till your almost to the edge, then unroll another strip of foam, work some more floor. That way you don't damage it when your trying to get traction when pushing the flooring together. I see photos of people who lay all their underlayment down first and then complain about it ripping when they are installing the flooring. Hope this helps someone. November 19, 2011
Rated 5.0 out of 5.0 by Great product! For the price point, this was a fantastic buy and a great product. I would buy it again. Went in easily and loved the taping for the seams. It was nice and cushy. Now that the floor is in, it's a joy to walk on and very warm even in winter. December 18, 2012
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