Sunfast Exterior Wood Finish Satin is the ultimate transparent, amber coloured exterior wood finish developed to provide excellent durability for exterior vertical wood surfaces such as log homes, siding, doors, trim, and fences. This product has been formulated with ultraviolet absorbers which protect the wood from fading and cracking and is impervious to moisture which prevents water staining, mildew and fungus growth. Sunfast Exterior Wood Varnish meets the requirement of Environmental Canada's VOC regulations under Category #33.