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Flooring Inc. The Flooring Superstore
🧣 Finished By First Frost - Save Up to 35% Off - Sale Ends Sunday 10/25
Our Sale Price
$0.49/sqft$0.65Save 25%
$98.00/roll

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$103.49 flat-rate shipping

Orders over 1 roll ship freight, quoted at checkout.

Ships between Oct 23 – Oct 28

  • IIC 57, STC 50.
  • Can be used with our Grid-Loc tiles, hardwoods, natural wood, laminate, engineered wood, real wood, and tiles.
  • Antimicrobial added to prevent the formation of mold and mildew.
Step 1 · Color: Confetti
$0.49 /sqft$98.00 /roll · 200 sq ft
Step 2 · Size: 4′ × 50′1 precut size
Quantity
1 roll200 sq ft$98.00

Confetti · 4′ × 50′ · 200 sq ft

More about this product

The thinnest rubber underlayment in our pre-cut lineup, without giving up sound control.

Why installers reach for 3mm rubber underlayment on tight-clearance floors

3mm Rubber Underlayment

Barely an eighth of an inch, and your floor height stays put.

Where our thicker 5mm and 12mm rolls step up sound isolation for heavier assemblies, this 3mm roll keeps overall buildup to a minimum for retrofits, doorway transitions, and jobs where every millimeter counts. 3mm rubber underlayment is a thin recycled-rubber layer that cushions sound and impact beneath hard flooring.

Cross-section of recycled-rubber underlayment installed beneath a dark wood floor plank, showing its speckled rubber profile

Low-Profile by Design

Adds only about 1/8″ of buildup under your finished floor, so door clearances and transitions keep working as designed.

IIC 57 / STC 50 Rated

Tested to IIC 57 and STC 50, cutting both footstep impact noise and airborne sound transfer between floors.

Antimicrobial Treated

An added antimicrobial helps resist the growth of mold and mildew beneath your finished floor.

Made in the USA

Manufactured domestically from more than 85% recycled rubber, keeping reclaimed material out of landfills.

End view of a rolled-up confetti-fleck rubber underlayment roll, showing its speckled recycled-rubber texture and cardboard core

The pick for installers who can't spare the height.

  • Works under hardwood, engineered wood, laminate, and tile — not for use under vinyl, VCT, or linoleum
  • Adheres with nails, polyurethane adhesive, staples, or double-sided tape, whatever the subfloor calls for
  • Quiets the hollow sound that Grid-Loc and modular tiles can make over hard subfloors
  • A popular condo and apartment flooring underlayment where every millimeter of height matters
  • See the full underlayment lineup for thicker rolls with more sound isolation
Impact sound rating
IIC 57
Airborne sound rating
STC 50
Recycled material
85%+
Ships in
1–4 Days
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Details & Specifications

Our 3 mm pre-cut rubber underlayment is a millimeter thicker than our 2 mm roll, but offers a greater amount of sound reduction comparatively. Rubber underlayments are very popular with hard surfaces because rubber is more rigid and provides the firmness necessary to resist compression from heavy objects and foot traffic. Our underlayment is also mold and mildew resistant due to the addition of an antimicrobial additive that inhibits the growth of both. Our flooring underlayment also doesn't hold water, which allows for the installation of the underlayment without a vapor barrier. But if the flooring will be installed in an area where water may be present, then a vapor barrier would be required. Also, a vapor barrier may be needed per the manufacturer's warranty. This soundproofing underlayment is also very popular with our Grid-Loc and Modular tiles because it is very thin and reduces the noise that can be made from them. So if you are looking for an underlayment that is affordable but at the same time gives you good sound absorption, then this is the product for you.

Material - Our 3 mm pre-cut rubber underlayment is comprised of more than 85% recycled material.

Size - 4' x 50'

Thickness - 3 mm (Approx. 1/8")

Weight - 0.50 lb/sq-ft.

Dimensions

Exact Weight (lbs)
100
Roll Width (ft)
4
Min Rollcut
1
Size
4' x 50'

Details

Nominal Sq. Ft.
200
Coverage
200
Material
Rubber

Features

  • IIC 57, STC 50.
  • Can be used with our Grid-Loc tiles, hardwoods, natural wood, laminate, engineered wood, real wood, and tiles.
  • Antimicrobial added to prevent the formation of mold and mildew.
  • Can be adhered with nails, polyurethane adhesive, staples, or double sided tape.
  • Do not use with vinyl, VCT, or linoleum.

Customer Questions & Answers

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Reviews

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1 ★0

Showing 1–3 of 3 written reviews

  • 5 out of 5 starsVery happy

    I am very happy with the purchased of tiles as well as underlayment. I was pleasantly surprised by the low amount of noise being transmitted by the flooring. I put the underlayment first and then installed the floating tiles for my garage. Impressed with the shine and the performance (sound insulation). Whole process took about 8-10 hours (underlayment+Flooring) including the time for cutting the tiles. I did this for the first time and my skill level is minimal. overall I was happy that I was able to do this in 10 hrs. It was a satisfying purchase with not much wastage in material. I went with the material amount suggested by you and was left with about 20 sqft of flooring left which I might need just in case of any repair work. Friendly staff on time delivery made the experience better. I am attaching a few pics of my garage installation.

    Hari R. ·

    1 of 1 found this helpful

  • 5 out of 5 starsFor engineered wood

    I USED IT TO UNDERLAY ENGINEERED MAPLE FLOORING AND IT WAS VERY EASY TO INSTALL. IT'S HEAVIER THAN EXPECTED BUT IN THE LONG RUN THAT IS GOOD.

    Sally ·

  • 5 out of 5 starsCarpet Tile Underlayment

    I did a lot of research before purchasing this underlayment. I was searching for an underlayment that would add a little cushion to a very large Interface carpet tile area rug. I purchased the 3.2 mm underlayment and it worked great. Its easy to work with and I connected the rolls with Gorilla tape as its stronger then duct tape. It made the carpet feel much more luxurious and helps with sound insulation. If I did it again I would use the 5.0 mm for even more cushion. Quality product, great price, easy to cut with a box cutter and the customer service was great. Thanks!

    Masood ·

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