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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


Submittal Sheet PDF 206.2 KB


  • GREENGUARD Certification Yes

Physical Data

  • Approximate Compressive Strength 3,500 - 5,000 psi (24.1 - 34.5 MPa)

Documents & Files

Data Sheets & Specifications

Data/Submittal Sheet (English) PDF 206.2 KB

White Papers

White Paper (English) PDF 249.5 KB

Catalogs & Brochures

Brochure (English)

Installation & Technical Manuals

Technical Guide (English)
Installation Guide (English) PDF 735.8 KB

SDS, Certifications & Reports

SDS (English) PDF 192.0 KB
SDS (French) PDF 174.0 KB
Evaluation Reports (English) PDF 1.2 MB

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Question Guidlines

  • Questions should relate to this product specifically.
  • For help with pricing, availability, or delivery, please call 800.874.4968 (Monday–Friday, 7am–6pm Central)
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