Proflex RCU 250 Acoustical Underlayment

Proflex RCU 250 is an advanced composite sound control underlayment made of sound deadening materials utilizing a combination of natural and engineered products to achieve superior IIC (Impact Insulation Class) and STC (Sound Transmission Class) sound reduction ratings. The product is also easy to install using a direct bond method, and is compatible with a variety of substrates and adhesives. PROFLEX RCU 250 thickness is 250/1000 of an inch or 1/4″.



Typical Use

Proflex RCU 250 offers an industry leading sound reduction in a single layer membrane product. RCU products typically meet or exceed most community building code, developer, or condominium requirements. The product also installs quickly and minimizes transition issues. In addition to the sound benefits. The product has been engineered and produced in a manor that meets several criteria supporting green / environmental building requirements. Using RCU products will assist a builder in qualifying for LEED™ Green Building Rating System.


  • Easy and fast to install with standard tools
  • Ready for tiling immediately after installation
  • Crack Suppression
  • Sound Control

Suitable Surfaces

  • Concrete (Poured, Prestressed, Precast)
  • Cured (Mortar Beds, Self Leveling Compounds, Gypcrete)
  • Concrete Backerboards
  • Wood (Exterior Grade Plywood, Hardwood, Toungue and Groove, OSB)

Coverages, Packaging

  • 120 sq.ft. per roll
  • 1/4″ x 4′ x 30′ roll

Companion Products

Data Sheets

Requires Adobe Reader Data / Installation Guidelines

Requires Adobe Reader Material Safety Data Sheet

Requires Adobe Reader Sound Test (FIIC)

Requires Adobe Reader Sound Test (FSTC)

Requires Adobe Reader Bronze 5 Year Warranty 

Requires Adobe Reader Silver 15 Year Warranty 

Requires Adobe Reader Gold Limited Lifetime Warranty 

Warranty based on the system of materials used to install finish flooring products. Please refer to our full warranty information for specific terms and conditions.