With compressive strengths of 4500 – 5500 psi these underlayments provide a smooth, hard surface over concrete slabs, pre-stressed concrete and concrete planks.
Levelrock® Brand 4500 Series Floor Underlayments are ideal for commercial, institutional and rehab construction.

Main Features

Levelrock® Brand 4500 Series Floor Underlayments and Levelrock® Brand 4500 Pre-Sanded Floor Underlaymentsaccept a variety of floor coverings and exceed commercial vinyl floor-covering requirements. In addition:

  • These underlayments allow light traffic within hours of installation
  • The exceptional surface hardness resists indentation
  • Levelrock® Brand 4500 Floor Underlaymentsincorporates an innovative self-sealing technology that typically permits floor coverings to be installed without the need to seal the underlayment
  • These underlayments are engineered and manufactured by USG.


  • Administrative Offices
  • Auditoriums and Gymnasiums
  • Bars Restaurants and Dining Areas
  • Cafeterias
  • Classrooms
  • Convention and Meeting Rooms
  • Corridors and Hallways
  • Department Stores and Boutiques
  • Dormitories
  • Executive Areas, Conference Areas and Board Rooms
  • Galleries and Exhibit Spaces
  • Grocery Stores
  • Guest Rooms and Suites
  • Health and Fitness
  • Kitchens and Food Prep Areas
  • Laboratories, Operating Rooms and Imaging Rooms
  • Lobbies and Reception Areas
  • Locker Rooms, Shower Areas and Pools
  • Mall Interior Spaces
  • Mechanical Rooms
  • Media Centers, Music Rooms and Libraries
  • Multi-Family Residential and Condos
  • Nurseries and Birthing Rooms
  • Open Plan Offices
  • Patient Rooms
  • Restrooms, Utility Rooms and Loading Docks
  • Single-Family Residential
  • Stairways and Elevator Shafts
  • Theatres
  • Traditional Offices

Documents & Files

Submittal Sheets & Specifications

White Papers

Catalogs & Brochures

Installation & Technical Manuals

SDS, Certifications & Reports