0075378701958

Fortifiber

Model 70-195

Internet #202592567

Store SKU #495804

Store SO SKU #1000894560

500 sq. ft. AQUABAR "B" Tile Underlayment Roll

$0.04 /sq. ft.
Covers 500.00 sq. ft.
$21.97 /roll
  • Helps increase the life and appearance of your flooring
  • Protects against moisture vapor
  • For use under tile and wood

Frequently Bought Together

Product Overview

Aquabar "B" floor and tile underlayment is an extremely effective moisture vapor retarder for use in a variety of interior construction applications. Consisting of two layers of Kraft paper laminated with asphalt, Aquabar "B" is a non-reinforced 30/30/30 duplex type Grade "B" paper. In the battle against interior moisture damage, the best defense is a strong offense. When you block moisture vapor from creeping underneath finish materials or reaching moisture sensitive substrates, you help increase the useful life and appearance of finish surfaces. To help win the battle, the Fortifiber Building Systems Group offers Aquabar "B" as inexpensive insurance to reduce moisture-related problems.

  • Ideal underlayment for wood flooring and tile
  • Consisting of two layers of Kraft paper laminated with asphalt, Aquabar "B" is a non-reinforced 30/30/30 duplex type Grade "B" paper
  • 500 sq. ft. roll measuring 3 ft. by 167 ft.
  • An extremely effective moisture vapor retarder for use in a variety of interior construction applications
  • 70-195
  • Note: Product may vary by store.

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Customer Questions & Answers

27 Questions50 Answers

Customer Questions & Answers

500 sq. ft. AQUABAR "B" Tile Underlayment Roll
500 sq. ft. AQUABAR "B" Tile Underlayment Roll

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5 answers

Can this be used with wood laminate flooring?

This question is from 500 sq. ft. AQUABAR "B" Tile Underlayment Roll
Asked by
California
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March 21, 2015
basically it's all in the question, we are planning on putting down some wood laminate flooring and from everything I can tell this would be suitable for it, or am I mistaken?

We would join the strips with some aluminum tape to make sure there are no gaps between the strips.

Any advice would be greatly appreciated
thank you
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Answers (5)

Asked by
West Coast
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Home Improvement Profile: DIYer
June 7, 2016
Answer: 
Laminate flooring manufacturers usually require a cushioning pad under their floating flooring to transition subfloor irregularities, stop moisture vapor and/or deaden sound. Aquabar is not a pad, neither is roofing felt. Aquabar is a Vapor retarder which will not trap moisture for use under nail down wood floors.
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Asked by
West Coast
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Home Improvement Profile: DIYer
May 6, 2016
Answer: 
The installation guide online says its for use over wood subfloors under nail down hardwood floors. When installing laminate or engineered floors read their install requirements. The usually want a foam pad, sometimes with a moisture barrier when installed over concrete a 2in1 product. Some condo associations require a specific sound rated product and when over concrete that is a 3in1 product - pad, Read More
The installation guide online says its for use over wood subfloors under nail down hardwood floors. When installing laminate or engineered floors read their install requirements. The usually want a foam pad, sometimes with a moisture barrier when installed over concrete a 2in1 product. Some condo associations require a specific sound rated product and when over concrete that is a 3in1 product - pad, vapor barrier, sound rated. Just follow the floor manufacturer's directions to maintain the warranty. Read Less
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Asked by
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February 25, 2016
Answer: 
NO. The correct and simple answer is no.
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May 19, 2015
Answer: 
Yes, you can use it for all floors according to its instructions.
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March 23, 2015
Answer: 
Thank you for your inquiry.
Our Aquabar 'B' is an ideal underlayment for wood flooring and tile. Laminate flooring is typically installed using the floating method. Our Airguard underlayment would be a great alternative. It provides superior defense against moisture by combining Air Flow technology, Microban®, and a moisture barrier which is available through Home Depot's website.
If you have any Read More
Thank you for your inquiry.
Our Aquabar 'B' is an ideal underlayment for wood flooring and tile. Laminate flooring is typically installed using the floating method. Our Airguard underlayment would be a great alternative. It provides superior defense against moisture by combining Air Flow technology, Microban®, and a moisture barrier which is available through Home Depot's website.
If you have any further questions please call our Customer Service (866) 435-8665.
Thank you for your interest in our product. Read Less
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5 answers

Can I put down multiple layers of this underlayment between plywood and nailed-down hardwood?

This question is from 500 sq. ft. AQUABAR "B" Tile Underlayment Roll
Asked by
San Jose
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November 2, 2014
For added padding and soundproofing, can I put down multiple layers of this underlayment between plywood and nailed-down hardwood (3/4" red oak)?

Thank you
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Asked by
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February 25, 2016
Answer: 
Why?
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May 19, 2015
Answer: 
You can, but to what purpose? If you are trying to level an area I have had good experience using my left over vinyl flooring or roofing tiles.
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Asked by
Oceanside, Ca.
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February 1, 2015
Answer: 
I really do not see why not Joe589. But I would really suggest contacting Custom Building Products tech support to answer that question for sure in that application. 1-800-272-8786. Hope this helps!
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January 28, 2015
Answer: 
No, this product is too thin to be considered padding, as you would with 30# felt or cork. Also, consider that shimming is one thing, but padding the whole floor is quite another; that is, with respect to moisture. Adding layers of moisture barrier, as this product is, will change its permeability factor. You need to make certain that you aren't creating more of a problem in moisture control while trying Read More
No, this product is too thin to be considered padding, as you would with 30# felt or cork. Also, consider that shimming is one thing, but padding the whole floor is quite another; that is, with respect to moisture. Adding layers of moisture barrier, as this product is, will change its permeability factor. You need to make certain that you aren't creating more of a problem in moisture control while trying to fix the padding issue. Read Less
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November 20, 2014
Answer: 
Dear Valued Home Depot Customer, we have reached out to the MFG for more information and their response is below.
"Our Aquabar “B” underlayment is a vapor retarder. It does not have any sound deadening qualities and we do not recommend that it is installed in multiple layers. This could trap moisture and damage the flooring.
If you have any further questions please call our Customer Service (866) Read More
Dear Valued Home Depot Customer, we have reached out to the MFG for more information and their response is below.
"Our Aquabar “B” underlayment is a vapor retarder. It does not have any sound deadening qualities and we do not recommend that it is installed in multiple layers. This could trap moisture and damage the flooring.
If you have any further questions please call our Customer Service (866) 435-8665.
Thank you for your interest in our product." Read Less
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4 answers

Can I use this as a moisture barrier in basement install as long as I add a cushion underlayment. Im putting down 8 mm walnut plateau .

This question is from 500 sq. ft. AQUABAR "B" Tile Underlayment Roll
Asked by
Cleveland,Oh
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February 1, 2015
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Asked by
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February 25, 2016
Answer: 
Absolutely not.
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May 19, 2015
Answer: 
No, it is not recommended to install hardwood floor in a basement regardless if you install this as a moisture barrier. Usually you install engineered or laminate flooring, with this underneath it.
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Asked by
Dalton
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Home Improvement Profile: Professional
February 2, 2015
Answer: 
Thank you for your inquiry.
We recommend that you follow the flooring manufacturers recommended requirements for installation of underlayment.
If you have any further questions please call our Customer Service (866) 435-8665.
Thank you for your interest in our product.
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Asked by
Oceanside, Ca.
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February 1, 2015
Answer: 
Mrshorts, that is a good question. I would think so, but since I have never used it as an underlayment for any type of laminate, I would suggest calling Custom Building Products tech support. This is the type of mistake that you would not want to make. I know the makers of wood flooring adhesive products also produce a roll-on moisture barrier for that purpose. Custom Building Products have a really good Read More
Mrshorts, that is a good question. I would think so, but since I have never used it as an underlayment for any type of laminate, I would suggest calling Custom Building Products tech support. This is the type of mistake that you would not want to make. I know the makers of wood flooring adhesive products also produce a roll-on moisture barrier for that purpose. Custom Building Products have a really good tech support division at that company. 1-800-272-8786. Hope this helps! Read Less
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4 answers

is this suitable for use over crawl space?

This question is from 500 sq. ft. AQUABAR "B" Tile Underlayment Roll
Asked by
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January 5, 2015
I am using it over 3/4" T&G OSB and will be installing 3/4" hickory over top. Don't really want to use #15 felt paper, will this work over a crawl space?
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Asked by
CA
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May 6, 2016
Answer: 
It will work great on top of the wood subfloor when nailed down. The manufaturer's installation guidelines on their website, recommends installing their Moistop Ultra 6 on the ground in a crawl space before installing Aquabar over the subfloor for more vapor protection.
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May 19, 2015
Answer: 
no, it is meant to go under various kinds of flooring
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Asked by
Oceanside, Ca.
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February 1, 2015
Answer: 
This should work just fine, same as roofing paper (aka 60 minute paper), but I would really suggest contacting Custom Building Products tech support Abugarcias before installing it. 1-800-272-8786. Hope this helps!
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January 15, 2015
Answer: 
Thank you for your inquiry.
Our Aquabar 'B' product will be excellent for your nail down wood flooring installation over a crawl space.
For installations over wood joist construction, over a crawl space, be sure that the ground is covered by a vapor retarder meeting ASTM E-1745 with a perm rating of equal or less than 0.1 and that the crawl space is properly ventilated. Also ensure that the wood Read More
Thank you for your inquiry.
Our Aquabar 'B' product will be excellent for your nail down wood flooring installation over a crawl space.
For installations over wood joist construction, over a crawl space, be sure that the ground is covered by a vapor retarder meeting ASTM E-1745 with a perm rating of equal or less than 0.1 and that the crawl space is properly ventilated. Also ensure that the wood flooring manufacturers flooring installation instructions are followed.
If you have any further questions please call our Customer Service (866) 435-8665.
Thank you for your interest in our product. Read Less
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Customer Reviews

Rated 4.8 out of 5 by 42 reviewers.
Rated 5.0 out of 5.0 by Exactly as expected. Easy to install. Arrived promptly. Exactly as expected. Easy to install. Arrived promptly. Purchased this product because it was recommended on the the flooring mfg. spec sheet. August 4, 2016
Rated 5.0 out of 5.0 by Quality product Underlayment that is strong and lays nice and flat. August 2, 2016
Rated 5.0 out of 5.0 by AQUABAR "B" Tile Underlayment This is a great substitute for rosin or felt paper as an underlayment for hardwood floors. It installs neatly and is cost effective. Would recommend for anyone looking for flooring underlayment. June 28, 2016
Rated 4.0 out of 5.0 by Great product. Product lays nicely. No issues at laps and transitions. One star reserved because I don't know how it will perform in the long run. So far, so good. July 5, 2016
Rated 5.0 out of 5.0 by National Wood Flooring Association Approved Vapor Retarder This product is great in that it provides the necessary vapor protection when installing wood floors in rooms over unfinished spaces (in my case, the living room over the basement). It is an product approved by the NWFA as a underlayment for wood and tile. This is a much cleaner product to user over asphalt / felt paper, as the asphalt material is sandwiched in between to layers of kraft paper. In addition, rosin paper and felt paper are no longer recommended underlayments. A penny more per square foot compared to rosin paper. Product was shipped faster than the estimated delivery. Installation is a breeze, especially with the markings showing your where to overlap adjacent sheets (min 4"). No need to attach the paper to the subfloor, as it will be held in place with the nails or staples holding down the wood floor. I just did one line of staples near the middle to hold the paper in place. October 9, 2013
Rated 5.0 out of 5.0 by Better than felt paper cheaper than the fancy alternatives Recently installed solid hardwood floors in two bedrooms and used this as underlayment. Easy to work with, very clean and smooth so it was easy to move boards around while planking. Cheaper than a lot of the alternatives as well. Only issue I experienced was that chalk lines are harder to see and wipe off easier than standard felt paper. December 22, 2015
Rated 5.0 out of 5.0 by Aquabar B Put this product down under 1600 sq ft of engineered hardwood floor. Easy to use, smell was minimal compared to traditional tar paper and it did not mark up my walls. October 6, 2015
Rated 3.0 out of 5.0 by Good product at the beginning of the roll. Near the middle to end the paper gets ridges that do not lay flat. Good product at the beginning of the roll. Near the middle to end the paper gets ridges that do not lay flat. September 1, 2015
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