Levelrock® Brand CSD® Early Exposure™ Series Floor Underlayments


Designed specifically for interior use in buildings with light-gauge steel frame construction and direct application to corrugated steel decks. Levelrock® Brand CSD® Early Exposure™ Series Floor Underlayments may be applied at a much lower thickness than poured-in-place concrete, reducing dead load and allowing a greater number of floors for increased rentable/sellable square footage.

Main Features

Levelrock® Brand CSD® Early Exposure™ Series Floor Underlayments can be poured up to 60 days before permanent windows and doors are installed. The self-sealing technology typically eliminates the need to seal the underlayment prior to floor-covering installation.Levelrock® Brand CSD® Early Exposure™ Series Floor Underlayments:
  • Are up to 55% lighter than 3-in. of conventional concrete
  • Have an average pour thickness of just 1-9/16-in. with standard 9/16-in. deck
  • Allows for trade traffic the next day vs. 7-10 days for conventional poured concrete
  • Provides compressive strength of 3500 – 5000
  • Is 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

Catalogs & Brochures

Installation & Technical Manuals

SDS, Certifications & Reports