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Internet # 334491379

Model # QW50LV

Store SKU # 1013666788

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50 sq. ft. 36 in. W x 16.7 ft. L x 1.4 mm T Acoustical Underlayment with Vapor Barrier for All Vinyl Plank Flooring

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  • For use under vinyl planks, laminate, hardwood, tile, or wood
  • Perfect vinyl plank floors with a pre-attached pad
  • GREENGUARD Gold Certified: Low Chemical Emissions
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Product Details

About This Product

Protect your flooring investment and enjoy a quieter, more comfortable home with QuietWalk LV premium flooring underlayment. Designed for luxury vinyl plank (LVP), luxury vinyl tile (LVT), rigid core, laminate, engineered hardwood and hardwood flooring, its high-density recycled fibers reduce sound, support locking systems and create a solid feel underfoot. DriWick technology and an attached 6-mil vapor barrier help manage moisture from concrete subfloors and everyday spills. The compression-resistant construction provides lasting support, including beneath flooring with pre-attached pads. GREENGUARD Gold and NALFA certified, radiant heat compatible and made in the USA, QuietWalk LV gives you dependable protection for floating, glue-down and nail-down flooring installations.

Highlights

  • Each 3 ft. x 16 ft. 7 in. roll provides 50 sq. ft. of underlayment coverage, ideal for bathrooms, closets and other compact spaces
  • One Underlayment for More Flooring Types: Works with LVP, LVT, SPC, WPC, laminate and engineered wood flooring 4 mm or thicker
  • Enjoy a Quieter Home: High-density fibers help reduce impact and airborne sound with Delta IIC 28, IIC 70 and STC 62 ratings
  • Create a More Solid Feel Underfoot: Dense fiber construction supports flooring locking systems and provides greater stability than basic foam underlayment
  • Protect Floors with Pre-Attached Pads: Adds an extra layer of support and protection beneath compatible flooring with an attached pad
  • Help Protect Against Moisture: DriWick fibers and an attached 6-mil vapor barrier help manage moisture from concrete subfloors and everyday spills
  • Choose the Installation That Fits Your Project: Suitable for floating, glue-down and nail-down flooring applications
  • Maintain Long-Term Floor Support: Compression-resistant, anti-crush construction helps reduce floor deflection and preserve performance
  • Stay Comfortable with Radiant Heat: Approved for use with in-floor heating systems, including QuietWarmth
  • Support Healthier Indoor Air: GREENGUARD Gold Certified for low chemical emissions
  • Help Resist Mold and Mildew: Antimicrobial-treated fibers help inhibit mold and mildew growth
  • Make a More Sustainable Choice: Made in the USA from recycled fibers that help divert material from landfills without sacrificing performance
  • Simplify Installation: Rolls out flat and includes an integrated lip-and-tape system for easier seam sealing
  • Install with Confidence: NALFA certified to meet underlayment standards established by the North American Laminate Floor Association
  • Trusted Protection Since 1997: Join millions of homeowners who rely on QuietWalk for quieter, more comfortable floors and lasting peace of mind
  • Return Policy

Product Information

Internet # 334491379

Model # QW50LV

Store SKU # 1013666788

Specifications

Dimensions

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

50

Product thickness (mil)

59

Recommended overlap (in.)

0

Roll Length (ft.)

16.7 ft

Roll width (in.)

36

Details

Color Family

Black

Flooring Material Features

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

Flooring Product Type

Underlayment

Flooring Type

Bamboo, Engineered Hardwood, Laminate, Solid Hardwood, Vinyl, Wood

Location

Basement, Bathroom, Floor

Material

Recycled Materials

Number of Rolls Included

1

Package coverage (sq. ft.)

50

Returnable

90-Day

Subflooring type

Any

Warranty / Certifications

Manufacturer Warranty

Limited Lifetime Warranty

Questions & Answers

I am considering Lina Ridge Oak (12 mil, 5mm) vinyl plank floor with attached underlayment over a plywood subfloor. Would like to know if Quiet Walk LV can be installed underneath it?
ByNov 5, 2026
1 Answer | 
Answer This Question

thank you for the question and yes you can install the quiet walk LV underneath a 5mm vinyl plank floor with attached pad over a plywood subfloor

By|Nov 5, 2026


    Can this be used on a basement slab?
    ByOct 28, 2026
    1 Answer | 
    Answer This Question

    Yes, that is an approved application.

    By|Oct 29, 2026


      What is the listing number for this product.
      ByJul 31, 2026
      1 Answer | 
      Answer This Question

      For certifications and testing questions, please call us at 888-379-9695 and we would be happy to assist.

      By|Aug 25, 2026


        How do you seal a seam?
        ByJun 23, 2026
        1 Answer | 
        Answer This Question

        The product comes with a factory installed lip and tape system.

        By|Jun 25, 2026


          Can this be used for SUPERCore Xtreme is a revolution in Waterproof Rigid Plank Flooring construction brought to you exclusively by WeShipFloors.com. THICK 30 MIL Commercial Wear Layer SPC Stone Plastic Composite - Dent Resistant Core Aluminum oxide fin
          ByJun 3, 2026
          1 Answer | 
          Answer This Question

          Yes, that is an approved application

          By|Jun 3, 2026


            Is this nailed or glued down?
            ByJun 2, 2026
            1 Answer | 
            Answer This Question

            It all depends on the floor covering you intend to install over top. Here is a link to the installation instructions: https://mpglobalproducts.com/wp-content/uploads/2022/12/QuietWalk-LV-100-Insert-Elongated-11x23-2025-Doc-757461.pdf

            By|Jun 2, 2026


              can this be used under real hardwood flooring
              ByMay 28, 2026
              1 Answer | 
              Answer This Question

              Yes, that is an approved application.

              By|May 29, 2026


                Installing on a wood OSB floor with nailed manufactured hardwood. Does the underlayment need to be stapled down before installing the flooring.
                ByMay 20, 2026
                1 Answer | 
                Answer This Question

                No, just install the underlayment in a floating manner and the installation of the hardwood will hold everything in place.

                By|Aug 7, 2026

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                  Customer Reviews

                  4.6 out of 5

                  • 4.6 out of 500 reviews
                  • 94% recommend this product
                  Filter by:
                  Showing 1-10 of 500 reviews
                  This customer chose to rate the product and not provide text.
                  by
                  This was a great buy overall starting from Home Depot delivery service. They delivered all my items on time and when I needed them. This underlayment (however recenlty installed) makes my floors feel pretty lush and soft, however because I just installed them I am unsure about the reliability. Overall I think its better than just buying the regular plastic sheets. I often walk around the house in my socks or barefoot so I really wanted that underfoot feeling to be soft.
                  by
                  No issue so far with this underlayment after 6 months under my vinyl planks. Used it on cement on the main level and on plywood upstairs before installing the vinyl planks. Sound absorption is minimal upstairs, but seems to help with reducing sound and moisture between the cement and vinyl planks.
                  by
                  This customer chose to rate the product and not provide text.
                  by
                  Easy to install and environmentally friendly. The adhesive strips were challenging.
                  by
                  • Verified Purchase
                  Underlayment worked out perfectly. Floors are super quiet. I ordered for delivery and 5 hrs later was on my doorstep! Great job Home Depot Supply Chain!!!
                  by
                  • Verified Purchase
                  better than nothing
                  the product adds a small sound barrier to noise traveling through the floor to the lower level. It does nothing that I can detect for the noise in the room itself. The people that made this product seem to be jerks. The roll is wound upside down so you cant roll it out in the room and cut it, you have to roll it out, move the roll, cut it then flip it over to install it. A little difference that adds up to quite an unnecessary inconvenience. they also attached a paper label to the outside of the roll (show side). As I removed the paper label the tape used to attach it ripped the plastic membrane. The built in adhesive strip to attach the seams wasnt particularly functional. The plastic strip covering the adhesive would be very difficult to peel or sometimes it would take the adhesive with it, leaving a tear in the membrane. For the second room I used this product in I ended up just using tyvek tape to join the seams.
                  by
                    This customer chose to rate the product and not provide text.
                    by
                    This customer chose to rate the product and not provide text.
                    by
                    • Verified Purchase
                    This underlayment works great under luxury vinyl plank flooring. This underlayment goes down easy, they sell it in different sizes to fit your specific needs. It's easy to cut and size to the job. It makes the floor have a little padding that helps the floor feel and sound more solid when walking on it. Would definitely recommend using an underlayment like this vs using nothing at all. Would definitely use this again.
                    by
                    Showing 1-10 of 500 reviews