What does a Green Bay winter do to decks and fences?
Snow sits on the boards for weeks. When it melts, water soaks into the wood, then freezes and thaws again through spring. That cycle opens cracks, lifts stain and encourages mildew and algae. In shaded spots the wood stays damp, and the surface goes green and slick. Sun in summer then fades the rest to a silvery gray.
Steps and landings near the door can also pick up deicing salt, which dries on the wood and leaves residue. Fences take the same punishment, and bottom boards, which sit near soil and lawn, often darken first. Freeze-thaw can also loosen fasteners and posts. A good wash shows you which boards are sound and which are failing, so you can plan repairs before the next winter.

