We will be upgrading usg.com Aug. 16-17. During this time some features may not be available. Thank you for your patience.


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 Underlaymentscan 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 Underlayment:

    • Is up to 55% lighter than 3-in. of conventional concrete
    • Has 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 to 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

    White Papers

    Catalogs & Brochures

    Installation & Technical Manuals

    SDS, Certifications & Reports