A high performance cellulose fibre cement sheet manufactured with sand, cement, cellulose fibre and additives.

Combines wind loading strength with high bending qualities, making it ideal for use as a sheathing board in multi-storey installations where its superb weathering properties allow extra time before external cladding systems need to be installed. Conforms to BS EN 634-1 BS EN 634-2, BS EN 13501-1 A2 Classification, BS EN 13986 and BS EN 318. CE marked.

Key applications:

  • Sheathing board on metal and timber frame.
  • Wet rooms.
  • Partitions in high impact applications.
  • OEM Application where improved strengths and density are required.


  • Excellent acoustic properties.
  • Excellent water repellence properties.
  • Improved fire performance over timber products.
  • High impact resistance.

Standard product features


1200 x 2400 mm.


  • Nominal density: 1350 kg/m³.
  • Bending strength (Modulus of Rupture): 19.0 Mpa.
  • Modulus of Elasticity (MoE): 5.8 Mpa.
  • Thermal conductivity: 0.30 W/mk.
  • Fire rating (BS 476-6 and -7): Class 0.
  • Fungus and termite attack: Highly resistant.
  • Frost resistance: Five star.
  • Front face smooth, back face textured.
  • Durability (minimum): 30 years.


Recommended fixing:

4.8 x 38 mm wing tip self-drilling fixing.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-45-50/355 Fibre reinforced cement board

Product specification

An important note about specifying



RCM - Roofing and Cladding Materials Ltd


+44 (0)800 6124662

Product reference



[6 mm]
25 dB sound insulation.
[8 mm]
28 dB sound insulation.


[RCM Intusil]
Neutral cure sealant for use in gaps and joints.
[RCM Foil Tape]
Waterproofing seal.
[RCM Joint Seal]
Air tightness seal.

Manufacturer details

Units 25-26 Rosevale Road,
Parkhouse Industrial Estate West,
Staffordshire, ST5 7EF
Tel +44 (0)800 6124662
Fax +44 (0)845 1303726
NBS Plus
NBS National BIM Library