Acoustical Flooring Underlayment for Laminate & Hardwood Floors

  • Perfect for all laminate and floating wood floors, even with pre-attached padding
  • Protects floors from water with built-in DriWick Technology
  • Reduces unwanted noise and lifetime anti-crush support
MSRP: $74.95 100 sq.ft. sized rolls
100 Sq Ft3ft x 33.3ftQW100B1LT 200 Sq Ft3ft x 66.6ftQW200B1LT 360 Sq Ft6ft x 60ftQW360B1LT


Superior Sound Reduction

Superior Sound Reduction

Recycled fibers absorb sound and keep it from traveling to other rooms. Makes click-together floating floors sound solid underfoot.

Water Protection

Water Protection

Dri-Wick technology allows installation over concrete to “breathe” - managing vapors from becoming bulk moisture. The attached vapor barrier protects the overlying floors from harmful moisture.

Compression Resistant

Compression Resistant

Dense recycled fiber structure supports the click-together mechanism and will uphold its supportive configuration under the consistent traffic of the overlying floor.

Smoothing Out Imperfections

Smoothing Out Imperfections

Firm and supportive but flexible enough to form around subfloor surface roughness, helps to cut down on extra subfloor surface prepping time.

Insulating Value

Insulating Value

Provides additional comfort to the entire home during seasonal temperature changes.

Approved for In-Floor Heating Systems

Approved for In-Floor Heating Systems

Allows heat to permeate evenly while helping to protect the floor covering material from thermal shock.

Made From Recycled Material

Made From Recycled Material

A patented manufacturing process repurposes post-industrial and pre/post-consumer materials into high-performance underlayment.

Certified Clean and Safe Indoor Air Quality

Certified Clean and Safe Indoor Air Quality

No VOC's (Volatile Organic Compounds) or off-gassing from materials.

Competitively Priced

Competitively Priced

An ideal upgrade from 2-in-1 polyethylene or polystyrene products and is less costly than most frothed foam, cork or rubber underlayment with similar sound numbers.

Float It

Float It

Can be used with a variety of floating floor types.

Customer Questions

View All Questions

Thank you for reaching out. This product is not approved for use under a vinyl plank. The product you will need to use is QuietWalk Luxury Vinyl. We have no issues with a pool table being installed over top of our products. https://www.homedepot.com/p/QuietWalk-100-sq-ft-x-3-ft-x-33-34-ft-x-1-4mm-Acoustical-Underlayment-with-Vapor-Barrier-for-All-Vinyl-Plank-Flooring-QWLV100/306837487

Thank you for reaching out. That is not an intended application but there should be no issue to use QuietWalk under an area rug.

Thank you for reaching out. That is not an approved application. It should not cause any problems and has been used that way before. There is just no warranty in that situation.

Thank you for reaching out. Yes, this product can be used in the basement under laminate floors. The use of an additional vapor barrier is dependent on the emission rate of the concrete slab. You will need to perform a calcium chloride test on the concrete slab. If the emission rate is less than 5lbs/1000sf/24hrs, then you do not need an additional vapor barrier. If the emission rate exceeds that number, then you do need an additional vapor barrier.

 Thank you for reaching out. If the flooring type is laminate, you will want to use the QuietWalk product.

Please use QuietWalk PLUS for all glue down or nail down applications. https://www.homedepot.com/p/QuietWalk-100-sq-ft-3-ft-x-33-3-ft-x-3-mm-Underlayment-with-Sound-and-Moisture-Barrier-for-Hardwood-and-Floating-Floors-QW100PLUS/319128525

Yes.  You may want a vapor barrier between the concrete and the plywood.

Yes this product will help. The R-Value of this product is over 4 per inch so it will help insulate the floor.


Leave Reviews
by Linda - Home Depot Review

Easy to install underlayment

Perfect to place over tiled floor to lay the laminate.
by Renovations - Lowes Review

Helps with sound

First time using this product and it seems to dampened the sound. It was used on a second floor with no insulation in the first floor. Be careful moving around on this when laying your floor as it tears easy. Adds some cushioning to the floor too.

by TobycW - Amazon Review

Nice product

I’ve installed laminate without an additional underlayment and didn’t like the hollow sounds underfoot. When doing my LVP install, I decided to use this product. It’s pretty easy to roll out and use. I first used a box cutter and then a stout pair of sissors to cut the rest. Taped the seams with Roberts seam tape. I definitely feel this product does it’s job. The floor feels solid without any odd noises. These are big rolls which make it easy to get coverage. I would recommend this product to anyone.
by Laura Carrington - Amazon Review

Best underlayment, also a moisture barrier

Thick felt underlayment and moisture barrier. I am replacing the entire floor of my downstairs with a bamboo engineered hardwood and doing the job myself. This underlayment is super easy to work with. Easy to roll out, has adhesive near the seams which is easy to use, and you can easily cut this underlayment with a utility knife (be sure to have some extra blades). I’m using this on a concrete floor so the moisture barrier is required, nice to have it all in one step/product. My legs do not get as tired walking around on this floor, thanks to this underlayment. I used Gorilla tape for the outside edges and seam between rolls. Great stuff, I’m so happy with this purchase!

Sound Rating Test

View All QuietWalk®

Impact Insulation Class (IIC)Sound transmission through the floor.


Sound Transmission Class (STC)Airborne sound transmission through a partition.


Delta IIC (IIC)Sound transmission difference between a concrete subfloor with and without flooring.

* The higher the number, the better the noise control!

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Enhanced Content

Superior Water Protection
QuietWalk gives you 360-degree coverage from the water above and below, allowing you to live life to the fullest and still have beautiful floors.
Featuring Exclusive DRI-WICK Technology
QuietWalk's fibers can wick & disperse up to 5 times their own weight in harmful bulk moisture! Its antimicrobial-treated fiber structure aggressively attacks subfloor moisture by drawing it up & away, allowing your subfloor to breathe.
Top & Bottom Side Defense
With its uninterrupted vapor barrier, QuietWalk protects your floors from top-side water & keeps them looking like new. QuietWalk's antimicrobial treated fibers protect your floor from harmful trapped & pooling water below by accommodating concrete's natural venting process.
Impact Noise Protection
QuietWalk's ultra-dense construction absorbs sound waves from impact noise, so the fun above doesn't affect the room below. IIC 71 - Impact Sound *The Higher the IIC number the better the noise control!
Ambient Noise Protection
QuietWalk creates a barrier that reduces noise transmitted to upper levels by everyday activities, so you can do what you love without worry.
Healthy Living & ECO Friendly
Unlike many current household products, QuietWalk doesn't release harmful VOCs (volatile organic compounds) or chemicals that keeps your air clean and your healthy. QuietWalk's dense, fibrous pad is also constructed by recycling textile materials that would have otherwise been thrown away!