- Highest fire classification a wood based panel can get
Construction, especially strucural uses and load bearing structures
Weather resistant gluing according to EN 314-2/class 3 Exterior. WISA-Spruce fulfils the requirements of EN 13986 E1 low formaldehyde emission class.
Surface and edges
Face veneer grades II and III (comply with standard EN 635-3).
Additional grade G (improved/solid grade II).
Fire retardant treatment is applied on both surfaces.
Length from 2400 to 2500 mm
Width from 1200 to 1250 mm
According to standard EN 13501-1:
B-s1, d0 (roof and wall structures)
T & G on request
Thicknesses and weights
|Nominal thickness (mm) ||Number of plies ||Thickness (mm)||Weight kg/m2 |
|min. - max.|
|15||5||14.3 - 15.3||6.8|
|18||7||17.1 - 18.1||8.6|
Sizes and thicknesses relating to moisture content 8 - 10 %.
Thicknesses and tolerances fulfil EN 315 requirements.