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Levelrock® Brand Commercial RH Series Floor Underlayments

Non-shrinking radiant heat underlayments that accept virtually all types of floor coverings.


Fast-applying cementitious underlayments formulated specifically for electrical and hot water radiant heat floor installations.
Levelrock® Brand Commercial RH Series Floor Underlayments and Levelrock® Brand Commercial RH Series Green Floor Underlayments are designed for use in interior commercial construction.

Main Features

The non-shrinking nature of Levelrock® Brand Commercial RH Series Floor Underlayments locks hydronic tubes and electric cables in place, preventing noise and tube chafing, while the special formulation is designed to be used within the elevated operating temperature ranges associated with radiant heat floors.Levelrock® Brand Commercial RH Series Floor Underlayments:
  • Accept virtually all types of floor coverings including resilient floors, ceramic tile, carpeting and wood
  • Apply at thicknesses of 3/4-in. to 3-in.
  • Provide approximate compressive strength of 3500 to 4500 psi
  • Can shorten it's setting time with the use of Levelrock® Brand RH Accelerator
  • Are engineered and manufactured by USG.


  • Corridors and Hallways
  • Dormitories
  • Guest Rooms and Suites
  • Lobbies and Reception Areas
  • Multi-Family Residential and Condos
  • Single-Family Residential


Submittal Sheet

Physical Data

  • Approximate Compressive Strength 3,500 - 4,500 psi (24.1 - 31.0 MPa)

Documents & Files

Data/Submittal Sheets & Specifications

Data/Submittal Sheet (English)

Catalogs & Brochures

Brochure (English)

Installation & Technical Manuals

Technical Guide (English)
Installation Guide (English) PDF 727.7 KB

SDS, Certifications & Reports

SDS (English)
SDS (Spanish) PDF 92.0 KB

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