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5mm Custom Cut Rubber Underlayment

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$0.79 /sqft
$3.16/linear foot
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Confetti5mm Custom Cut Rubber Underlayment
Product Highlights
  • Our most popular underlay.
  • Mold and mildew resistant.
  • Has been shown to absorb sound better than 12mm cork and 12mm foam.

  • Our most popular underlay.
  • Mold and mildew resistant.
  • Has been shown to absorb sound better than 12mm cork and 12mm foam.
  • Do not use with linoleum, vinyl, or VCT (vinyl composition tile).
  • Can be used with natural stone, hardwoods, laminate, engineered wood, real wood, and tiles.
  • Can be adhered with a polyurethane adhesive, staples, double sided tape, or nails.
  • IIC 60, STC 53.
Description - Our 5mm custom cut rubber underlayment has been shown to offer the best sound insulation in the market. 5mm rubber underlayment has been shown to outperform all leading forms of underlayment including 12mm cork and 12mm foam. Our custom cut rubber underlayment allows anyone to custom cut the length of the roll to the nearest whole foot increment. This allows for less waste and also allows for an easier install with less cutting. Rubber is great to use in areas that are at and above grade and is great in areas where water may be present. If water is present, then it would be required to use a vapor barrier to protect your floor. This sound proofing underlayment is also mold and mildew resistant which is due to the fact that rubber does not hold water. This flooring underlayment also does not have to be adhered to the flooring substrate, but can be stapled, nailed or taped down. This is also good for floating floors.
Material - Our 5mm rubber underlayment comprised of 80% recycled material.
Width - 4 feet wide/roll.
Length - Rolls can be custom cut free of charge to any length 15’ or longer. All lengths need to be in whole foot increments such as 15’, 16’, 17’, etc.
Thickness - 5mm (Approx. 3/16”).
Weight - 0.83lbs./sqft.
Origin - Made in the USA.
Recommended Uses - Our 5mm flooring underlayment offers a solid surface underneath your flooring surface, and is a popular choice for hard surfaces such as hardwoods and natural stone. But it has also been successfully used under ceramic tile, laminate, engineered wood, real wood, marble, brick, pavers, parquet, carpet and tiles. It is NOT recommended for VCT (Vinyl Composite Tile), vinyl, and linoleum.
For complete rubber underlayment installation instructions, please Click Here.

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.

Don't see what you're looking for? 
I am wondering if the rubber flooring could be used under deck tiles in an outdoor application
That would be fine.
Can your rubber floors and underlayments be used on walls?
Bob Miller
Our 5mm Custom Cut Rubber Underlayment and all of our rubber floors and underlayments can be installed on walls. We recommend using a polyurethane adhesive to adhere them to the wall.
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Average Rating

  Worked great!
Self-installed in Clients living room
Tony from Milwaukee, WI wrote...
Fast shipping and great quality.
  1974 VW Camper
Self-installed in 1974 VW Camper
Ernest A. from League City, TX wrote...
I purchased rubber flooring and underlay. One product was like an insulation and the other was like a more durable surface (I believe used on gym floors, etc.) Use of Product - I have a 1974 VW Camper. I have installed the durable floor surface on ALL of the interior floor space. I intend to glue the rubber insulation (color specs inside) to the side surfaces. A single roll of the durable surface rubber flooring is perfect for doing the entire flooring space (including back cushion/storage area) and is a market application not currently conceived. The rubber insulation isn’t really necessary, but I will put it to use. How I like it - The finished product will perform VERY well. You must understand I am 100% restoring this vehicle - it has already been de-rusted/repainted/engine rebuilt/etc. I used a product called “Lizzard Skin” made here in Houston. I first sprayed the interior metal with soundproofing (incredible results), then with a ceramic finish (hard surface). The net result is an interior surface that will NOT sweat is better than an Igloo and has studio sound system qualities. On top of that is your rubber flooring - making road noise from below a certain 0, providing quality resilient elastic support for the bamboo flooring I am installing over it. My intention is to build to last the rest of my life. Installation - Installation was reasonably simple, but took longer than expected. Cutting the material isn’t the easiest - I used a razor knife, but still (I found use of a long board underneath provided a better cutting surface to start and then allowed the cut seam to open and use the knife blade to slice the seam & after a couple of times, it was done. It took me +/- 10 hours, and I wish had made patterns before starting, but all worked out in the end as bamboo flooring will be over the top. In the driver area, carpet will be laid down over it. I believe you should consider its application to the RV industry. One roll is perfect for my small VW Camper. It provides: (i) noise reduction; (ii) thermal insulation; (iii) comfort underfoot. I don’t know what sweat issues might exist that can cause rusting underneath. I have avoided that as there is no exposed metal underneath.
  Garage underlay
Self-installed in Garage
Zachary S. from Sacramento, CA wrote...
I purchased the underlayment for my garage floor and it has exceeded my expectations. It was easy to install (cut for exact placement) and I will also be purchasing more to continue with my garage project .
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