Key Features:

  • A high-performance structural cement-bonded particle board (CBPB) suitable for a huge range of on-site and modular construction applications.
  • Fire resistant – UL listed and rated for zero flame-spread per ASTM E-84 and ANSI / UL 723.
  • Excellent load-carrying capacities over spans up to 24″.
  • Highly moisture resistant.
  • Resistant to fungus, termite/vermin, impact and general abuse.
  • Non-toxic, contains no hazardous volatiles, asbestos or formaldehyde.
  • Environmentally safe, contributing to your building’s LEED certification (IEQ Credit 3, IEQ Credit 4).
  • Excellent sound attenuation properties.
  • Dimension accuracy down to 1/16th inch, and highly stable.
  • Installs and fabricates using standard carpentry tools and equipment.
  • Nailable for shingle applications as roof sheathing.
  • High fastener pull-out values.


Load bearing:

  • Structurally span rated.
  • Excellent load carrying capacities over 24″ on center maximum spans (with ASTM E-455 design sheer of up to 709lbs PLF).

Moisture resistance:

  • Will not delaminate in water.

Dimensional accuracy:

  • Achievable down to 1/16th inch.

Dimensional stability:

  • Minimal dimensional changes in temperature & moisture variations

Fire resistance:

  • Highly Fire-Resistant – UL listed
  • Rated for zero flame spread and zero smoke development under surface burning characteristics testing standards of ASTM E-84 and ANSI / UL 723.

Acoustic insulation:

  • Excellent sound attenuation properties.


  • No food value to insects / vermin.


  • 71% Portland cement
  • 19% mineralized wood fiber
  • 9% water
  • 1% bonding agents.


  • Fastens with traditional screw fixings, with high fastener pull-out values.
  • Alternatively, 3/4″ thickness Versaroc® installed as roof sheathing is nailable for shingle applications.


  • Available in 4’ x 8’ and (4’ x 10’ special order) sheets at thicknesses of 5/16”, 3/8”, 1/2”, 3/4”, 7/8”, 1”, 1-1/8”, 1-1/4” and 1-1/2”.
  • Square edge boards are available on all thicknesses and tongue & groove edges are available on 5/8” through 1-1/4” panels.
  • Please note that 1-1/2″ thickness boards are only available with square edges.


Product Brochure & Submittal Sheets

Specification & Certification

Load Bearing

Fire Resistance

Fire-Rated Design Assemblies

LEED Credits


Leveling / Filler Compound


8 diameter minimum x applicable length, corrosion resistant screws with self-countersinking heads and self-drilling ‘Tek’ points. The length of the fastener should be a minimum of 2x the board thickness. For attaching 20mm (3/4″) Versaroc® boards to steel framing (20 – 12 gauge)

  • Grabber Part No. HS8158JBWG2 (#8 x 1-5/8″)
  • Hilti PWH SD Cement Board Screw, No. 00372760 (#8 x 1-5/8″)
  • ITW Buildex S-12 ‘Rock On’ No. 2159500 (#8 x 1-5/8″)
  • Pro Twist Cement Board Fasteners

Versaroc Projects

461 Dean, Pacific Park

461 Dean, Pacific Park

461 Dean in Brooklyn, formerly known as B2 Atlantic Yards, is the largest prefabricated structural building in the world.

The 32-storey tower is a residential development of 363 rental studio, one and two-bedroom apartments, 50 percent of which are designated as affordable to low- and middle- income households. The development also features 4,000 square-feet of retail space at its base.

461 Dean was designed by SHoP Architects and developed by by Forest City Ratner Companies. Modular construction consists of 930 steel modules, meaning around 60% of the construction has been developed off-site.

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Markham Gardens, New York

Markham Gardens, New York

Markham Gardens is a premier apartment community on Staten Island set on a 12-acre site.

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Monarch Landing, Illinois

Monarch Landing, Illinois

The Springs at Monarch Landing is a 94,000 sq. ft. health and rehabilitation center, comprising a total of 124 new residences.

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