- RCM Cemboard can be used as an external sheathing board on structures under 11m in height or where a fire specification has not been specified.
- RCM Cemboard can be used in internal linings and flooring application. Please be mindful to check the moisture movement of our Cemboard if the product will be subject to continued high levels of moisture. To be suitable for this application there cannot be high levels of moisture.
- RCM Cemboard can be used as part of an acoustic build up.
Cemboard
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EN 13501-1 class B-s1, d0
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2400 x 1200mm ( 8mm, 10mm, 12mm, 16mm, 18mm, 20mm and 24mm)
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Features
- Fire rated to EN 13501-1 class B-s1, d0
- High impact resistance
- Good water resistance
- Great strength and stability
- Improved strength and density for OEM applications
- Excellent acoustic properties
- Integrates with other Benx products
Key applications
- Sheathing board
- Acoustic applications
- High impact partitioning
- Shuttering
- OEM applications
Workability
RCM Cemboard can be cut, drilled and nailed using conventional hand tools; offering many of the properties of timber.
For cutting the product in any volume, we recommend the use of an RCM poly crystalline diamond Dart Blade to avoid excessive wear on other blades. Alternatively, RCM offer a complete fabrication service, please contact our technical department for details or visit our fabrication and design page here.
Suitable for the Following Construction Types
Lightweight Steel Frame
Timber Frame
Modular / Offsite
A building board with multiple uses
Cemboard
Technical Information
Nominal Density
1330 kg/m3
Bending Strength
((Modulus of Rupture))9 N/mm2
Modulus of Elasticity
((MoE))4500 N/mm2
Internal Bonding
EN 310 and EN 13986:2004 - 0.5 N/mm2
Thermal Conductivity
0.20 W/mk
Moisture Content
9% ±3%
Reaction to Fire
BS EN 13501-1 rated to B-s1,d0
Biological Resistance
Highly Resistant
Surface Condition
Front Face
Smooth
Back Face
Smooth
Durability
((Life Expectancy - Minimum))30 years
Standard Board Sizes
2400 x 1200mm
Thickness
((mm) )10 12 16 18 20 24
Nominal Mass of Product
((kg/m²) )13.3 16 21.3 24 26.6 32
Dimensional Tolerance
Length
±3mm
Width
±3mm
Thickness
<12mm: ±0.7mm
12-15mm: ±1.0mm
15-18mm: ±1.2mm
>19mm: ±1.5mm
Product Testing and Certification
Fire Reaction Tests
BS EN 13501-1:2007+A1: 2009 - rated to B-s1,d0
BS EN 13823:2010
Physical Properties
BS EN634 Part 1 & 2
BS EN 594
BS EN 13986
BS EN 1062-1
Recommended Fixings
Recommended Fixings
BS EN 1062-1:2004
Paints and varnishes. Coating materials and coating systems for exterior masonry and concrete - Classification
Steel Frame
FIX006 - 4.8mm x 38mm Wing tip self drilling fixing
Timber Frame
FIX005 - 4.2mm x 42mm Climaseal self drilling fixing
FAQ's
Both faces of RCM Cemboard have a smooth surface, the board is stencilled on the reverse side.
RCM Cemboard has a rating of B-s1, d0 to EN13501-1 this is a reaction to fire classification and should not be confused with fire resistance.
No, RCM Cemboard cannot be left permanently exposed.
RCM Dafa tape or RCM 315 tape should be applied to all board to board joints as soon as possible after fixing the boards, unless an air tight seal is required to the external face of the sheathing board, for an air tight seal then the RCM Joint seal system should be used.
If the joints are taped as soon as the boards are fitted they can be left exposed during the construction phase for up to 3 months, for up to 12 months temporary exposure we highly recommend using the RCM Joint Seal Kit.
No, Cemboard is not suitable to be used as a tile backer board. Multipurpose is an excellent choice instead for a tile backer board.
No, RCM Cemboard is not suitable for use with a plaster skim coat.
No, RCM Cemboard is not suitable for use as a render carrier board. Renderflex however is.
RCM Cemboard edge distance is 12-15mm except at the board corners where fixings should be moved up or down to achieve 50mm. Fixings should be fixed using a maximum 600mm x 300mm grid pattern.
- 27 No. fixings per 2400mm x 1200mm sheet when fixed in a vertical orientation.
- 25 No. fixings per 2400mm x 1200mm sheet when fixed in a horizontal orientation.
For fixing into SFS framing 4.8mm x 38mm self-drilling wingtip fixings suitably treated against corrosion should be used.
For fixing into Timber framing 4.2mm x 42mm self-drilling fixings suitably treated against corrosion should be used.
RCM can supply Poly Crystalline Diamond (PCD) blades suitable for cutting RCM Cemboard in a range of diameter and bore sizes, please contact RCM Technical department for further information.
Technical Specifications
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