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WISA-SpruceWR is a lightweight water repellent plywood panel for structural uses. The wood-based water repellent coating agent protects the panel from the weather and adds efficiency to construction work. The wood-based agent creates a barrier slowing the rate of moisture penetration to the structure. At the same time, the surface allows the panel to breath and dry freely. Weather resistant glueing according to EN 314-2/class 3 Exterior. WISA-SpruceWR fulfills the requirements of EN 13986 E1 low formaldehyde emission class.