Renderflex, a fibre-cement board for use internally as a wall liner and tilebacker board on non-loadbearing and loadbearing timber- and steel-frame substrate walls in new and existing domestic and non-domestic buildings, subject to height restrictions.

Cellulose/ fibre cement building board, specifically designed as a carrier board for polymer modified render systems where no insulation is applied to the board prior to rendering, for new timber frame rendered facades. For projects where insulation is applied first, RCM Cemboard, Multipurpose, Y-Wall or CEM+ are suitable alternatives.

Designed to achieve a strong key between polymer basecoats/ topcoats and the Renderflex. CE marked and conforms to BS EN 12467.

Features and benefits:

Dimensional stability.
High tensile strength for long term durability.
Excellent weathering properties for exposure prior to render application.
Impact resistance.
Approved by many of the UK render manufacturers. Please contact RCM for further information.
Frost resistance: Five star.
Fungus and termite attack: Highly resistant.
Durability (minimum): 30 years.
Smooth front and textured back face.
Nominal density: 1380 kg/m³.
Bending strength (Modulus of Rupture): 18.8 MPa.
Modulus of Elasticity (MoE): 5.5 GPa.
Thermal conductivity: 0.47 W/m·K.
Nominal Density (Oven Dry) Avg: 1375 kg/m³.
Bending Strength (Modulus of Rupture): 10.5 N/mm².
Moisture Content Estimated: approx.8.0 %.
Soundlnsulation dB Estimated: 28dB for 6.0mm.
Biological Resistance: Highly resistant.
MoR (Modulus of Rupture) Oven Dry – Across: 19 MPa.
MoR (Modulus of Rupture) Oven Dry – Along: 11 MPa.
MoR (Modulus of Rupture) Saturated – Across:14 MPa.
MoR (Modulus of Rupture) Saturated – Along: 7 MPa.
Water Absorption (by dry weight): 30 %.
Water Content at EMC (by dry weight): 8 %.
Thermal Conductivity (estimate at 20°C): 0.12 W/mk.
Moisture Movement (saturate to EMC): 0.06-0.08 %.

19_5708-Renderflex FIBRE-CEMENT WALL BOARDS