3.2mm Pre-Cut Rubber Underlayment

Our Price
$0.51 sqft
$51.00 roll
reg: $0.68 sqft
roll: $68.00

Proudly made in the USA
Ships between Apr 28 - May 2
Color: roll over image to magnify

4' x 25' roll
Accessories for 3.2mm Pre-Cut Rubber Underlayment

Description - Our 3.2mm pre-cut rubber underlayment is a millimeter thicker than our 2mm roll, but offers a greater amount of sound reduction comparatively. Rubber underlayments are very popular with hard surfaces, due to the fact that rubber is more rigid, and provide 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 a antimicrobial additive which inhibits the growth of both. Our flooring underlayment also doesn’t hold water, which allows for 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 sound proofing underlayment is also very popular with our Grid-Loc and Modular tiles due to the fact that it is very thin and helps to reduce 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 3.2mm pre-cut rubber underlayment is comprised of more than 85% recycled material.
Width - 4 feet wide per roll.
Length - Our rubber underlayment comes in 25’.
Thickness - 3.2mm (Approx. 1/8”).
Weight - 0.50lbs./sqft.
Origin - Made in the USA.
Recommended Uses - Our 3.2mm flooring underlayment is designed to be used in both commercial and residential applications. Rubber underlayment is the favorite to use under hard surfaces such as natural stone and hard woods, but it has also been successfully used under luxury vinyl tile (LVT) and plank, ceramic tile, laminate, engineered wood, real wood, marble, brick, pavers, parquet, carpet and tiles. It is not recommended for VCT (Vinyl Composition Tile), vinyl, and linoleum.

  • Our 3.2mm Rubber Underlayment typically ships within 5-7 business days and delivers within 7-12 business days depending on your location.
  • An email will automatically be sent to you with your tracking information as soon as your flooring underlayment ships and tracking information becomes available.

For complete rubber underlayment installation instructions, please Click Here.

Subfloor Type Wallboard Ceiling Floor Covering IIC Rating STC Rating
6" Concrete Slab No Wood 57 50

Tested in Accredited Laboratories as per ASTM E-90/E-413 (STC) and ASTM E-492/E989 (IIC).


  • Can be used with our Grid-Loc tiles, hardwoods, LVT, natural wood, laminate, engineered wood, real wood, and tiles.
  • Do not use with vinyl, VCT, or linoleum.
  • Can be adhered with nails, polyurethane adhesive, staples, or double sided tape.
  • Antimicrobial added to prevent the formation of mold and mildew.
  • Made from over 80% recycled material.
  • IIC 57, STC 50.


How To Install Rubber Underlayment



Rubber Underlayment

  • Why rubber underlayment?

Rubber underlayment offers superior sound resistance, is versatile and resilient. Comprised of recycled materials, this environmentally friendly product provides cushion underfoot as well as reducing sound transmission and impact sound such as footsteps. Amazingly, a 2mm thick rubber underlayment has similar testing numbers in sound resistance as compared to a 6mm thick cork underlayment.

Do I REALLY need underlay?

  • Yes, most definitely.

Underlayment is an amazing invention created by the flooring gods out of necessity. Underlay has an impressive list of benefits, including: adding warmth to your floors so your feet aren’t so cold on new tile flooring, adding comfort and a slight ‘give’ underneath wood or vinyl floors, reduced sound transmission (great for houses with noisy teenagers!), as well as reducing in room step noise. The image to the left is a very simplified example of using underlayment versus not using it, but as you can see the benefits greatly outweigh any reason not to.

Making your house a home

  • Products that work together

A favorite for use with hard plastic garage tiles, hardwood flooring and stone floor tiles. Rubber underlayment should never be used with vinyl flooring, VCT, or linoleum flooring as it could potentially stain these materials.


  • What does it mean?

Underlayment with a thickness of up to 5mm thick are great when it comes to residential or commercial use, with all flooring types. When you get to more than 5mm thick, these are really great for installations where you need to add thickness to match up with an adjoining/existing floor surface.

IIC / STC Ratings

  • What do they mean?

IIC stands for Impact Insulation Class, which refers to impact sounds such as shoes hitting the ground, dropping a cell phone, or other scenarios where something it dropped or impacts the floor. STC stands for Sound Transmission Class, which refers to any audible noise (not an impact) such as music playing aloud, a conversation, or a loud television, for example. With both of these ratings systems, the higher the number rating is for the underlayment, the better it will suppress sound, and the quieter a room will be. You may want to pay close attention to these ratings when shopping for underlayment if sound reduction is important to you.

Customer Questions & Answers

Don't see what you're looking for?
  • 2


    I want to use this rubber underlayment under a heated tile floor. won't this give when you walk on it and break the grout? shouldn't you glue this down so it doesn't move when installing tile? sounds like you can't mud over the rubber and then install the tiles on top, so what goes over the top of the underlayment to mud the heat cables on then the tile? what thickness should you use?


    Rubber underlayment can be used underneath floor heating and we would recommend gluing it down in your scenario. The heating element can be installed directly to the rubber underlay, please check with the floor heating product guidelines for that product. 3.2mm thickness is suitable for this application, you may choose another thickness only if you need to add further height to the floor.

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Customer Reviews

5/5 3.2mm Pre-Cut Rubber Underlayment
Anonymous from Hatley WI
I made two slide out drawers in the back of my pickup truck and I used this material as an underlayment under the frame of the drawers to keep it from sliding around in the truck. I also used it in the drawers and on the top so my tools don't slide around.
Did you install it yourself - Yes
Where did you install it - Pickup truck
Was this helpful? 1 0
For engineered wood
5/5 3.2mm Pre-Cut Rubber Underlayment
Sally from Pacifica, CA
Did you install it yourself - Yes
Where did you install it -
Was this helpful? 0 0
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