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Flexibility, strength and superior water resistance deliver optimal performance in wet areas like tub and shower surrounds. USG Fiberock® Tile Backerboard panels are a unique, fiber-reinforced gypsum product that includes a water-resistant core for supreme durability and superior performance in wet and dry environments alike. Easy to cut and install, these panels are ideal for use under tile, vinyl, or paint.

Main Features

Unlike traditional water-resistant gypsum board, USG Fiberock® Tile Backerboard is made of a uniquely uniform composition, which creates a strong, mold-resistant product that holds tough when wet. These panels have no paper face to delaminate, tear or scratch, ensuring the product maintains its integrity.

  • Certified recycled content of 95 percent
  • Uniform composition provides both strength and water resistance
  • Use in both wet and dry areas throughout the home
  • Ideal under tile, stone, vinyl, hardwood flooring, laminate flooring and carpeting
  • Superior tile bond — three times industry standard
  • Recognized by major resilient-flooring and adhesive manufacturers
  • Free of resins, adhesives, and solvents that might stain a vinyl floor
  • Provides a smooth, flat, paintable surface for wall applications.
  • Easy to cut, fasten and install
  • Made in the U.S.A.


  • Bars Restaurants and Dining Areas
  • Cafeterias
  • Dormitories
  • Guest Rooms and Suites
  • Health and Fitness
  • Kitchens and Food Prep Areas
  • Multi-Family Residential and Condos
  • Patient Rooms
  • Restrooms, Utility Rooms and Loading Docks
  • Single-Family Residential



  • Mold & Mildew Resistance
    Contains a broad-spectrum antimicrobial additive on the face and back of the panel that provides resistance against the growth of mold and mildew. Includes sag-resistance performance.
  • ASTM E84
    • Flame Spread 5
  • ASTM Classification ASTM C1278; ASTM C36; ASTM C79; ASTM D3273-10; ASTM E84
    • Flame Spread 5


Underlayment and Backerboard Overview

USG Fiberock® Brand Tile Backerboard And Underlayment For Wet And Dry Areas

Documents & Files

Data Sheets & Specifications

Data/Submittal Sheet (English) PDF 210.0 KB

White Papers

Sell Sheet (English) PDF 2.7 MB

Catalogs & Brochures

Brochure (English) PDF 2.5 MB

Installation & Technical Manuals

Installation Guide (English) PDF 848.9 KB

SDS, Certifications & Reports

SDS (English)
SDS (Spanish) PDF 133.4 KB


Warranties (English) PDF 172.0 KB

Ask a question

Our customer support team will get back to you within 48 hours

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)
  • All questions and answers follow USG’s Terms & Conditions.
  • Your question and USG’s answer may be posted to this page in the future, but none of your personal info will be included.

q & a

  • Can I lean Fiberock® Brand Panels against walls?

    Fiberock Panels are heavy and should be stacked flat on the floor. Serious injury can occur from falling panels.

  • Have a question?

    Let us do research and get back to you (usually within 48 hours).

    Ask USG
  • Need help right away?

    Call our Technical Support team at 800-874-4968 (Monday-Friday, 7am-6pm Central).