- RCM Multipurpose can be used in flooring and roofing applications.
- RCM Multipurpose can be used as a tile backer board.

Key Applications
- Internal and external walling
- Flooring and ceilings
- Facia’s and soffit liner
- OEM applications for improved strength and density
- Tile backer board
- External cladding
Key Features
- Fire rated to EN 13501-1 class A1 non-combustible
- Exceptional racking strength EN 594:2011
- High impact resistance
- BBA Approved
- Excellent weathering properties
- Wide range of thicknesses
- Extensive range of applications
- Range of soffit strips available
- Integrates with other RCM products
Workability
RCM Multipurpose can be cut, drilled and nailed with conventional woodworking tools.
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 the fabrication and design page here.
A building board with multiple uses
Technical Data
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Nominal Density
1380 kg/m3
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Bending Strength
((Modulus of Rupture))18 N/mm2
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Modulus of Elasticity
((MoE) (Oven Dry))9135 N/mm2
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Thermal Conductivity
0.12 W/mk
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Moisture Content
≤8%
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Reaction to Fire
BS EN 13501-1 Class A1 Non Combustible
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Biological Resistance
Highly Resistant
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Surface Condition
Front Face - Smooth
Back Face - Textured
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Durability
((Life Expectancy - Minimum))30 years
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Standard Board Sizes
2400 x 1200mm
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Thickness
((mm))3.2 4.5 6 9 12
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Nominal Mass of Product
((kg/m²))4.2 6 8 12 16
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Dimensional Tolerance
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Length
+1/-2mm
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Width
+1/-2mm
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Thickness
±10%
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Product Testing and Certification
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Fire Reaction Tests
BS EN 13501-1 Class A1 Non-Combustible
Category 1 fire rated through wall solution to BS 476 part 21 and BS 476 part 22.
BS EN ISO 1716:2010
BS EN ISO 1182:2010
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Physical Properties
EN ISO 12467
EN 594:2011 and BS 5268-6.1¹
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Recommended Fixings
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Steel Frame
4.8mm x 38mm Wing tip self drilling fixing
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Timber Frame
4.2mm x 42mm Climaseal self drilling fixing
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Further Information
Soffit Strips Available



FAQ's
RCM Multipurpose has one smooth face and one textured face, the smooth face should be fixed outermost.
RCM Multipurpose has a rating of A1 to EN13501-1 this is a reaction to fire classification and should not be confused with fire resistance.
Yes, RCM Multipurpose can be left permanently exposed, we would suggest using a sealing coat to maintain long-term appearance.
Yes RCM Multipurpose can be used as a tile backer board.
Yes, 12mm thick RCM Multipurpose (referred to as Superflex) is referenced as a suitable render carrier board for the Kilwaughter K-rend system using their HPX and HPX 12 basecoats.
RCM Multipurpose edge distance is 12mm 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 Multipurpose in a range of diameter and bore sizes, please contact RCM Technical department for further information.
Key Technical Certificates
