Clay drybuilding


Wood fibreboard (HFA) for cladding of wood and metal post structures of inner walls, facing shells, ceiling and roof surfaces. CLAYTEC HFA maxi boards are light and breathable. The large format of 125 x 187.5 cm ensures efficient working, it is designed to fit the 62.5 cm drywall grid. Thanks to the reasonably priced large building boards the ecological drywall is affordable for everyone! As supplement to this product sheet the CLAYTEC Guidelines for ecological drywalls in system apply.

Scope of application
Wood fibreboard (HFA) for cladding of wood and metal post structures in the interiors. For inner walls and facing shells DIN 4103-1, installation area 1 or 2 for ceiling and roof surfaces. On surfaces of water exposure class W0-I as per DIN 18534-1, e.g. in bathrooms (except for shower area) and household kitchens. With reinforcing layer substrate for YOSIM clay design plaster or CLACYTEC clay finish plaster fine 06 with CLAYFIX clay finish as well
as otherCLAYTEC clay plaster.

Wood fibres made from wood from responsibly managed forests, white glue for layer bonding.

Compressive strength ≥ 150 kPa. Bulk density approx. 250 kg/m3, Thermal conductivity value 0.05 W/mK, µ 5. Heat storage: Cp 2.1 kJ/kgK, 13.1 kJ/m2K. Fire behaviour according to DIN EN 13501-1: E.

Component values
For stability as per DIN 4103-1, sound insulation of walls and facing shells as well as building material class and fire resistance class for walls and ceilings please refer to CLAYTEC Guidelines for ecological drywalls in the system.

Dimensions and weight
Thickness= 25 mm, L= 1.87,5 mm, W= 1.250 mm. Surface per board =2.34 m2. Mass of approx. 14.6 kg/board = approx. 6.25 kg/m2.