Model # 70-026

Internet #202549346

Roberts Black Jack 100 sq. ft. 28 ft. x 43 in. x 2.5 mm Premium 2-in-1 Underlayment for Laminate and Engineered Wood Floors
0075378700265

Roberts

Black Jack 100 sq. ft. 28 ft. x 43 in. x 2.5 mm Premium 2-in-1 Underlayment for Laminate and Engineered Wood Floors

  • Provides cushioning and sound absorption
  • Protects against moisture vapor
  • Easy to install
Was  $0.27/sq. ft.
$0.20 /sq. ft.
Covers 100.00 sq. ft.
$19.95 /roll

Save 25%  through 03/31/2017

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Product Overview

The Roberts Black Jack 2-in-1 Underlayment is designed for use under floated laminate, bamboo and engineered wood floors and is ideal for many types of subflooring. Black Jack is engineered as a superior grade, 2-in-1 underlayment with a 2.5 mm thick foam layer that provides optimal cushioning and sound absorption, as well as a closed cell foam design that offers excellent moisture vapor resistance. The underlayment also features a 4 in. overlap and adhesive strip to seal out moisture and join multiple rolls.

  • For use under floated laminate, bamboo and engineered wood floors
  • Dense, closed cell structure offers moisture, mold and mildew resistance
  • Ideal for use over radiant heated floors
  • Features cushioning and reduction in sound transference
  • Easy installation with plastic overlap and adhesive strip
  • 100 sq. ft. coverage with rolls measuring 43 in. x 28 ft.
  • IIC (Impact Sound Transmission Test) rating is 68, STC (Sound Transmission Class) is 65 and Sound Transmission Loss Test is 20
  • 70-026

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Customer Questions & Answers

does this underlayment need an additional vapor barrier over concrete subfloor?

Asked by: Anonymous
No. A vapor barrier is built into the product.
Answered by: Anonymous
Date published: 2015-11-07

is this product suitable for regular hardwood nail down installation?

Asked by: Anonymous
That depends on whether the subfloor is concrete or wood. If the planks are nailed into the subfloor, it would puncture the underlayment, which would render its moisture barrier pointless.
Answered by: Anonymous
Date published: 2017-03-21

Can I use this over concrete radiant heat floors?

Can I use this over concrete radiant heat floors?
Asked by: Lu
Thank you for your inquiry. The Roberts Black Jack 2-in-1 Underlayment is designed for use under floated laminate, bamboo and engineered wood floors and is ideal for many types of subflooring and is Ideal for use over radiant heated floors. For more information about this and other Roberts products, contact technical services at 866-435-8665.
Answered by: RobertsSupport
Date published: 2017-01-23

Is the 68 IIC rating measured with the underlayment alone or the underlayment and another substrate/layer.

My condo requires a minimum IIC rating of 70 with a 6 inch concrete slab. Is the IIC rating advertised by the manufacturer measured with the underlayment alone or with another layer included?
Asked by: Carol
Thank you for your inquiry. Our sound testing was completed with the underlayment over a 6" concrete slab and a suspended ceiling. If you have any further questions please call our Customer Service (866) 435-8665. Thank you for your interest in our product.
Answered by: RobertsSupport
Date published: 2015-09-20
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Customer Reviews

Black Jack 100 sq. ft. 28 ft. x 43 in. x 2.5 mm Premium 2-in-1 Underlayment for Laminate and Engineered Wood Floors is rated 4.2 out of 5 by 85.
Rated 5 out of 5 by from I've worked with many different underlayments as a flooring installer. I think this is the second... I've worked with many different underlayments as a flooring installer. I think this is the second best underlay available from THD, next to FloorMuffler, which is over double the price. It does tear easily. Just be sure to unroll it as needed (four foot underlayment, then four foot of floor covering), as apposed to rolling out over the entire subfloor then starting to lay your covering. I've even used it to deaden sound when building car interiors.
Date published: 2017-02-07
Rated 5 out of 5 by from Did exactly what I needed it to do. It didn't tear as easily as some other reviews. It covered ... Did exactly what I needed it to do. It didn't tear as easily as some other reviews. It covered better than I expected (I even had a whole roll leftover!).
Date published: 2016-11-29
Rated 5 out of 5 by from Quality product I rehab houses and I install a lot of laminate flooring. Lately I've been using Robert's Back Jack and I'm pleased with the ease of installation, the moisture protection and the soft feel under foot. From experience let me make this suggestion. Like most underlayment I've used this will not stand-up to unprotected foot traffic, it will snag and tear easily, so install one row at a time, apply your flooring, then install the next row, this will minimize it's exposure. Also, remove all staples and fully seat all screws and nails into the subfloor. Like most things proper preparation is the key to perfect results.
Date published: 2013-10-18
Rated 5 out of 5 by from Works great The blackjack underlayment was everything we were hoping.. easy to work with and a lot better quality than other underlayments at similar prices...
Date published: 2016-11-01
Rated 5 out of 5 by from Easy to lay down, easy to cut, easy to stick together at the seams, good quality material. Easy to lay down, easy to cut, easy to stick together at the seams, good quality material.
Date published: 2016-12-12
Rated 5 out of 5 by from Easy to install, great quality ... Easy to install, great quality
Date published: 2017-03-07
Rated 4 out of 5 by from worked well for the price worked well for the price
Date published: 2016-12-09
Rated 5 out of 5 by from works great... works great
Date published: 2017-03-14
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