Surface
Quality Grade G in accordance with standard EN635-3, solid surface with no open defects (improved grade II).
WISA-Spruce Special is a well-known trade name for WISA-Spruce with solid surface in many markets, such as UK, Benelux, Italy and Denmark.
Bonding
Phenolic resin cross-bonded weather resistant glueing according to EN 314-2/class 3 Exterior.