AcoustiCORK RC500 Underlayment

Our Price
$1.27 sqft
$152.40 roll
reg: $1.69 sqft
roll: $203.20

Proudly made in the USA
Ships within 5 - 7 business days
Color: roll over image to magnify
Rubber Cork

5mm thick x 4' x 30' roll
Accessories for AcoustiCORK RC500 Underlayment

Description - AcoustiCORK RC500 Rubber/Cork underlayment is the perfect underlayment to use under both ceramic tiles and hardwoods. This underlayment combines the sound proofing qualities of rubber with the improved adhesive properties of the cork granules. What sets this flooring underlayment apart from other cork based underlayments is the fact that the flooring surface can be direct bonded to the underlayment surface. This enables for a quicker and easier installation process. One other quality of this underlayment is its crack suppression qualities. This underlayment helps to suppress substrate cracks from appearing in the flooring surface. This flooring underlayment has also been shown to provide the same sound absorption qualities as 5mm rubber.
Material - AcoustiCORK RC500 is composed of both rubber and cork and consists of 95% recycled material making this a very 'green' product.
Width - 48” wide rolls.
Length - Available in 30’ long rolls.
Thickness - 5mm (~3/16”).
Weight - 88 Lbs. per roll.
Origin - Made in the USA.
Recommended Uses - RC500 underlayment is a favorite to use under ceramic tiles and hardwoods, but has been used under natural stone, wood, vinyl, linoleum, laminates, bamboo, luxury vinyl tiles and planks, engineered wood, and cork flooring.

  • AcoustiCORK R500 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 rubber/cork underlayment ships and tracking information becomes available.

For direct bonded tile installation instructions, please Click Here.

For glued wood floor installation instructions, please Click Here.

For floating floor installation instructions, please Click Here.

For nailed wood floor installation instructions, please Click Here.

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

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


  • Designed to be used under ceramic tiles and hardwoods, but can be used under natural stone, wood, LVT, laminate, engineered wood, cork flooring and bamboo.
  • Has been formulated to suppress crack formation in the flooring surface.
  • This underlayment can be directly bonded to the flooring surface with a polyurethane adhesive.
  • Has been shown to offer the same sound reduction as 5mm rubber underlayment.
  • Mold and Mildew resistant.

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