Levelrock® Brand SRB™ Sound Reduction Board

Economical, water-resistant sound reduction panel with a smooth, coated finish.


Economical, high-performance sound reduction board that helps meet 50 IIC/50 STC.
Levelrock® Brand SRB™ Sound Reduction Board provides excellent sound control in all types of construction while lowering the cost, profile and weight of the underlayment sound system.

Main Features

Levelrock® Brand SRB™ Sound Reduction Boards thin 3/8-in. profile, when topped with 3/4-in. Levelrock® Brand Floor Underlayment, minimizes transition height changes between rooms. Choose from three wood frame sound- and fire-rated systems — each tested in a laboratory environment per ASTM E90 for Air-borne sound (STC) and ASTM E492 for Structure-borne sound (IIC) per Section 1207 of the International Building Code. Levelrock® Brand SRB™ Sound Reduction Board:

  • Is water-resistant
  • Requires only 3/4-in. of Levelrock® Brand Floor Underlayment to achieve comparable sound performance to sound mat systems
  • Contains nearly 50% recycled content, which may assist in obtaining LEED® credits
  • Is engineered and manufactured by USG.


  • Administrative Offices
  • Classrooms
  • Corridors and Hallways
  • Dormitories
  • Executive Areas, Conference Areas and Board Rooms
  • Guest Rooms and Suites
  • Lobbies and Reception Areas
  • Media Centers, Music Rooms and Libraries
  • Multi-Family Residential and Condos
  • Open Plan Offices
  • Single-Family Residential
  • Theatres
  • Traditional Offices

Documents & Files

Submittal Sheets & Specifications

Catalogs & Brochures

Installation & Technical Manuals

SDS, Certifications & Reports