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Internet # 307956358

Model # QW360B1LT

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360 sq. ft. 6 ft. x 60 ft. x 3 mm Underlayment with Sound and Moisture Barrier for Laminate and Engineered Floors

Covers 360 sq. ft.
36¢
/sq. ft.
($129.19 /roll)
42¢
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  • Ideal for various types of flooring
  • Protects floors from water w/ built-in DriWick Technology
  • Reduces unwanted noise and lifetime anti-crush support
  • View More Details

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Product Details

About This Product

QuietWalk is our premium underlayment choice allowing firm support for multiple types of flooring with great acoustic benefits. This product is built with sound reduction and moisture dissipation in mind. The unique DriWick technology relies on a blend of antimicrobial treated recycled fibers that will wick away subfloor moisture, while the attached 6-mil vapor barrier is specially designed to protect your flooring from water damage, and protect your subfloor from topical spills and accidents. Covers 360 Sq. Ft. - Roll Size: 60 ft. x 6 ft. x 1/8 in. : Package Size: 74 in. x 13 in. x 13 in.

Highlights

  • Use under laminate and floating wood flooring, not recommended for nail/staple or glue down applications, not recommended for luxury vinyl
  • WATER PROTECTION: Exclusive DriWick technology allows concrete subfloors to breathe, preventing moisture vapor emissions from becoming trapped. The attached vapor barrier protects the overlying floors from damage. Also for use over wood subfloors.
  • SOUND PROOFING: Recycled fibers absorb sound and keep it from traveling to other rooms. Makes click-together floating floors sound solid underfoot.
  • IIC (IMPACT INSULATION CLASS) SOUND RATING OF 71: IIC is a measure of how much impact sound (walking, kids playing, etc.) is reduced after traveling through the floor covering, underlayment, and building structure and emerging in the room below. The higher the number generally indicates better sound absorption qualities.
  • STC (SOUND TRANSMISSION CLASS) SOUND RATING OF 66: STC is a measure of how much airborne sound (speech, TV, stereo, etc.) is reduced after traveling through the floor covering, underlayment, and building structure and emerging in the room below. The higher the number generally indicates better sound absorption qualities.
  • DELTA IIC SOUND RATING OF 22: Delta rating is the best rating to consider when comparing the performance of different types of underlayment.
  • GREENGUARD GOLD CERTIFIED: QuietWalk is independently certified as a product that contributes to safer, healthier air. It does not contain chemicals that can cause air pollution, and has a very low VOC emissions level, which ensures QuietWalk is acceptable for use in environments such as schools and healthcare facilities. It also exceeds California's strict indoor air quality standards.
  • MOLD AND MILDEW RESISTANT: The anti-microbial treatment in our Recycled Synthetic Fibers are proven to inhibit mold and mildew growth.
  • Easy installation: manufactured with a convenient lip and tape system to simplify joining the sections of underlayment, no additional underlayment tape required, except when needed at end seams
  • Approved for pad-attached flooring: QuietWalk's high compression resistance provides firm support, even when installed under flooring with a pre-attached pad
  • NALFA certified: QuietWalk meets all underlayment standards set by the North American laminate floor association (NALFA)
  • Return Policy

Product Information

Internet # 307956358

Model # QW360B1LT

Specifications

Dimensions

Area Coverage Per Roll (sq. ft. for each roll)

360

Product thickness (mil)

125

Recommended overlap (in.)

0

Roll Length (ft.)

60 ft

Roll width (in.)

72

Details

Color Family

Blue

Flooring Material Features

Antimicrobial, Attached vapor barrier, Cushioning, Mold/mildew resistant, No mixing required, Radiant heat, Solvent free, Sound absorbing, Soundproof

Flooring Product Type

Underlayment

Flooring Type

Bamboo, Concrete, Engineered Hardwood, Laminate, Prep & Protection

Location

Basement, Floor

Material

Recycled Materials

Number of Rolls Included

1

Package coverage (sq. ft.)

360

Returnable

90-Day

Subflooring type

Any

Warranty / Certifications

Manufacturer Warranty

Limited Lifetime Warranty

Questions & Answers

can this be used as a barrier between vinyl flooring and a rubber backed turf mat in my basement? Is it breathable?
ByNov 3, 2026
1 Answer | 
Answer This Question

thank you for the question but this product is not recommended to used over rubber. it can be used on wood and concrete sub-floors

By|Nov 4, 2026


    Can this go on top of concrete?
    ByOct 23, 2026
    1 Answer | 
    Answer This Question

    Yes, that is an approved application.

    By|Oct 29, 2026


      Can i install this in a covered sunroom over trex decking? There would be no direct rain, however since this is outdoors, moisture could be trapped through the bottom layer (which would be on top of the trex decking)?
      ByOct 14, 2026
      1 Answer | 
      Answer This Question

      This product is to be installed in climate controlled areas.

      By|Oct 29, 2026


        Can this be used with pad attached laminate
        ByOct 10, 2026
        1 Answer | 
        Answer This Question

        Yes, that is an approved application.

        By|Oct 12, 2026


          Can it be used to soundproof walls?
          BySep 25, 2026
          1 Answer | 
          Answer This Question

          No, this product is not approved for use on wall applications.

          By|Oct 6, 2026


            Can this be used on the second floor of my home over an OSB subfloor or do I need something that is not a moisture barrier?
            BySep 5, 2026
            1 Answer | 
            Answer This Question

            This product is approved for use over OSB subfloors.

            By|Oct 6, 2026


              Is this appropriate for loose lay click cork flooring?
              ByAug 25, 2026
              1 Answer | 
              Answer This Question

              A better product to use for that application would be QuietWalk LV

              By|Aug 25, 2026


                Does it provide insulation to floors
                ByAug 3, 2026
                1 Answer | 
                Answer This Question

                It will provide some insulation value to the floor.

                By|Aug 3, 2026


                  Viewing 1-8 of 227

                  Customer Reviews

                  4.6 out of 5

                  • 4.6 out of 947 reviews
                  • 89% recommend this product
                  Filter by:
                  Showing 1-10 of 947 reviews
                  Read directions with caution
                  We tried to use the quiet walk underlayment underneath life proof laminate. It was an expensive mistake on our part because it did not allow for the laminate to stay locked together. The life proof directions said that underlayment was not necessary, but that it could be used if you used their product. After five rows, we decided to tear the underlayment out.
                  by
                    • Recommended
                    This customer chose to rate the product and not provide text.
                    by
                    • Verified Purchase
                    Installed new laminate flooring throughout the house. We used QuietWalk underlayment. We have not experienced any noise or movement as we walk. The Quietwalk underlayment does not smell bad at all. The flooring feels great and there's no hollow sound or issue of any kind. We had no issue installing the underlayment. I am sure it does what it is supposed to do and I recommend it Feels great to walk on my new floor.
                    by
                    My flooring installer had never worked with this type before and said he couldn't believe it muffled noises of his work boots, he said he's so impressed he's going to start recommending it and took a picture and sent to his brother in California. I noticed the sound reduction too and how much warmer the floor compared to my kitchen that has no underlayment under the floor. I will definitely be purchasing more when I do other rooms in my house.
                    by
                    does what it is supposed to & good use of fabric waste
                    love the recyled fabric aspect, it isn’t too too thick but can easily be double layered (if that’s allowed) lol. it is easy to cut, i just had kids scissors around when i started laying it out and it wasn’t hard to manage. the seals that come with it may be stuck and come off with the full cover string but you can avoid that if you find a point its not stuck to completely and peel from there and just tape it on top. i liked it overall!
                    by
                      • Recommended
                      • Verified Purchase
                      No Noticeable Sound Reduction
                      Purchased Quietwalk premium underlay in March 2025. The claims about sound reduction are completely exaggerated. I put down TWO layers wall-to-wall and noticed no difference in the noise (voices, music) coming from the room below. This product should not make any claims whatever about sound reduction -- whatever other merits the product may have. Avoid. I will be shredding what I rolled out to be put out for garbage.
                      by
                        This will be a go-to for all my flooring installs
                        [This review was collected as part of a promotion.] This is a fantastic quality product. I use this now for all types of floor installation. I needed this in order to help dampen impact noise between my floor and my downstairs neighbor when I put in the landing at the top of my stairs. These are incredibly old stairs and the house has not been maintained well before I owned it. This product was a silver bullet. You get what you pay for here as you’re getting sound dampening, an underlayment that softens your walk, and a vapor barrier. Couldn’t be easier and the instructions that come with it are perfect. Love that there’s not too much waste in the packaging either.
                        by
                          Reliable and reasonable
                          [This review was collected as part of a promotion.] It is easy to install, rolling out smoothly with a built-in moisture barrier. It provides good noise reduction, making footsteps quieter and reducing echoes. The durability is solid, as it doesn’t tear easily during installation. It works well with laminate and engineered hardwood floors, but for solid hardwood, results may vary. However, the thickness is a bit less than expected, offering moderate cushioning. While it’s a great choice for sound absorption and moisture protection, those needing extra padding might prefer a thicker option.
                          by
                            It’s okay
                            This underlayment is a good budget option for adding a little sound damping under LVP. However, it didn’t help much under our laminate floor and definitely didn’t dampen the sound of the upstairs flooring from downstairs. The most recent roll we purchased had melted seam plastic (assuming it’s from the shrink wrap process?) so we had to buy tape for the seams and I don’t think the width is straight because it didn’t line up quite right.
                            by
                              2 found this review helpful
                              Showing 1-10 of 947 reviews

                              Compare Key Features

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                              Product Snapshot

                              Ideal for customers who want superior soundproofing and moisture protection, ensuring floor longevity and a quieter home.
                              Ideal for homeowners looking for premium underlayment, making floor installation easier. A great choice for those who need MICROBAN antimicrobial protection.
                              Ideal for homeowners looking for an all-in-one underlayment solution, making floor installation easier. This underlayment boasts superior sound and moisture protection, antimicrobial properties, and eco-friendliness.
                              Ideal for homeowners looking for acoustic performance, making floors quieter with sound dampening technology.

                              Thickness

                              3 mm
                              2 mm
                              1/8 in.
                              0.08 in.

                              Sound Absorption

                              STC 66, IIC 71, Delta IIC 22
                              67
                              IIC up to 76, STC 67
                              IIC up to 74 dB

                              Moisture Barrier

                              Thermal Insulation

                              0.432
                              R-value of 0.48

                              Compatibility with Floor Type

                              Laminate, Floating wood, Engineered Hardwood
                              Laminate, Engineered wood
                              vinyl plank, laminate, engineered wood, solid wood, and hardwood floating or nail-down floor system
                              Laminate, Engineered Hardwood, Solid Hardwood