Cembrit Cemwood is an autoclaved fibre-cement board with a texture on the front face.
The boards can be supplied grey for on-site painting, staining, or pre-coated in any colour required.
Ideal as a replacement for timber or to maximise new build design options. Popular for use on: new-builds, refurbishments, park homes, chalets, pavilions, garden houses or coastal installations.
Please note: Colours are for illustrative purposes only, actual colours may vary.
A minimum 10mm clear air gap should be left behind the boards, with 5000mm2 continuous opening at top and bottom of installation. A weather-proof membrane should be installed prior to fixing vertical battens.
Boards are installed like shiplap timber weatherboarding with a 30mm lap. Fixings must be a minimum 20mm from the horizontal board edge and 15mm from board end. Fixings should have the appropriate corrosion resistance for the application and location. Generally galvanised nails or screws should be adequate.
Joints between boards should be staggered on successive courses, with at least 3 intervening planks on the same vertical.
Boards should be fixed to vertical battens with 50mm face and a minimum thickness of 30mm if used with timber studwork or 50mm with blockwork, spaced at maximum 600mm centres.
|Cover width (mm)||179|
|m2 per length (installed)||0.655|
|Fire propogation||BS 476: Part 6 1 = 0.7|
|Surface spread of flame||BS 476: Part 7 Class One|
|Combustibility (ASTM E 136)||Non-combustible|
|Tolerance and properties|
|Bending strength||Dry ≥ 14N/mm2 Wet ≥ 7N/mm2|
|Modulus of elasticity (average)||8 GPa|
|Expansion from dry||At 105°C to saturated 0.16%|
|Thermal conductivity L - value||0.24 W/m°K|
|Thermal resistance R - value||0.031m2 K/W|