Key Features:

  • A high-performance structural cement-bonded particle board (CBPB) suitable for a huge range of on-site and modular construction applications.
  • 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 load-carrying capacities over 24″ spans.
  • Fire resistant – UL listed and rated for zero flame-spread per ASTM E-84 and ANSI / UL 723.
  • Highly moisture resistant, including an option for factory sealing.
  • Resistant to fungus, termite/vermin, impact and general abuse.
  • 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.


  • Panels are available in standard finish, factory sealed on all six sides and/or factory calibrated (sanded).


Specification & Certification

Load Bearing

Fire Resistance

Fire-Rated Design Assemblies

LEED Credits

NYC Dept. of Buildings, Materials and Equipment Acceptance Division (MEA)


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