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AcoustiCORK RCLT500 5mm Rubber/Cork Boxed Sheet

Our Sale Price
Sale price: $1.65 /sqft
Covers 120.00 sqft
Available For Order - Ships between Aug 19 - 26
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BlackAcoustiCORK RCLT500 5mm Rubber/Cork Boxed Sheet

Product Highlights

  • 1 order covers 120 sqft.
  • For hardwoods, laminate and tile.
  • Provides crack suppression.

  • 1 order covers 120 sqft.
  • For hardwoods, laminate and tile.
  • Provides crack suppression.
  • Mold and Mildew resistant.
  • This underlayment can be loose laid or directly bonded to the flooring surface with a polyurethane adhesive.
Description - AcoustiCORK RCLT underlayment sheet features a material combination of recycled rubber, high density foam, and cork. These tiles are convenient in size, easily portable and offer superior function for crack suppression and comfort underfoot. RCLT is designed to reduce noise underfoot and is great for use in the home, apartments and commercial applications.
Material - AcoustiCORK RCLT500 is composed of rubber, cork, and high density foam and consists of 85% recycled material, making this a very eco-friendly product.
Size - 2' x 3' tiles
Thickness - 5mm
Weight - 4 Lbs each sheet
Origin - Made in the USA.
Recommended Uses - RCLT underlayment tiles are a favorite to use under ceramic tiles and hardwoods, but has been used under hardwoods, natural stone, ceramic, wood, laminates, bamboo, and engineered wood.

Available For Order - Ships between Aug 19 - 26

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? 
What is the IIC rating for this product over a 6" concrete subfloor?
The IIC rating for the AcoustiCORK RCLT 5mm Sheet is 51 with glued wood over it and 50 with ceramic tile over it.
I see that the IIC is 51, but what is the STC rating for your 5mm?
The acoustical ratings for AcoustiCORK RCLT 5mm Sheet are as follows. Tested for STC & IIC Ratings Per ASTM E 90, E 492 & E2179 51IIC/ 51STC - 6” Slab - 5mm / Hardwood -22 ∆IIC 50 IIC/ 54 STC 6” Slab-10mm / Ceramic Tile -22 ∆IIC 51 IIC / 55 STC 8” Slab -5mm / Ceramic Tile
Can I put this in a concrete basement and then put one of your artificial turfs on top of it?
Yes, you can install the AcoustiCORK RCLT500 5mm Rubber/Cork Boxed Sheet over concrete and place turf over the top. This underlay can be installed over any hard flat surface like concrete, plywood, asphalt, OSB, etc., and can be installed under most flooring types.
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