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Renderflex

High performance dimensionally stable render carrier board

RCM Renderflex is a high-performance cellulose fibre cement building board, offering excellent strength, weathering and stability properties when used in conjunction with polymer renders.

Renderflex has been specially formulated to achieve a strong key between polymer basecoats and top coats. The unique board structure offers a high tensile strength (ILB) essential for long term durability, whilst being developed to minimise board movement reducing any stress being applied to the render system.

Fire Rating
EN 13501-1 class A2-s1, d0
Standard Board Sizes
2400 x 1200mm (6mm, 9mm and 12mm)
BBA CERTIFICATION
Agrément Certificate 19/5708
SPECIFICATION WITH NBS

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Features

Fire rated to EN 13501-1 class A2-s1, d0
BBA approved
High dimensional stability
Excellent weathering properties prior to render application
High impact resistance
Maintains minimum board movement
Reduced stress on rendered finish
Integrates with other RCM products

Key applications

Render carrier board
For use with polymer renders
Internal and external applications
Fascia’s and soffit liner

Workability

RCM Renderflex can be drilled, screwed and nailed with conventional hand 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 our fabrication and design page here.

Suitable for the Following Construction Types

Lightweight Steel Frame
Timber Frame
Modular / Offsite

Technical Request Form

For Technical Service or Product Support please file a technical request using our support form or contact your local representative.

Technical Request Form

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System

Renderflex used in a timber or steel build-up

Technical Data

Nominal Density

1375 kg/m3
Bending Strength
((Modulus of Rupture))

17 N/mm2
Modulus of Elasticity (MoE)
((Oven Dry))

9210 N/mm2
Thermal Conductivity

0.12 W/mk
Moisture Content

8%
Reaction to Fire

BS EN 13501-1 Class A2 Limited Combustability
Biological Resistance

Highly Resistant
Surface Condition
- Front Face
  
  Smooth
- Back Face
  
  Textured
Durability
(Durability)

30 years
Standard Board Sizes
- Dimensions
  
  2400 x 1200mm
- Thickness
  
  6mm 9mnm 12mm
Nominal Mass of Product
((kg/m²))

8.3 12.4 16.6
Dimensional Tolerance
- Length
  
  +1/-2mm
- Width
  
  +1/-2mm
- Thickness
  
  ±10%
Product Testing and Certification
- Fire Reaction Tests
  
  BS EN 13501-1 Class A2 Limited combustibility
  
  BS EN ISO 1716:2010
  
  BS EN ISO 1182:2010
  
  BS EN 13823:2002
  
  BS 476 Parts 6 & 7
- Physical Properties
  
  BS EN ISO 12467:2012
Recommended Fixings
- Steel Frame
  
  4.8mm x 38mm Wing tip self drilling fixing
- Timber Frame
  
  4.2mm x 42mm Climaseal self drilling fixing