Wood and composite structures take a beating in West Columbia's humidity. Pollen, mildew, algae, and general grime build up fast on decks and fences, especially on shaded sides of a yard or under tree cover near the river. Deck and fence cleaning covers washing away that buildup, treating mildew and algae stains, and prepping the surface so it's ready for sealing or staining if that's the next step. On wood, it usually means a lower-pressure wash with a cleaning solution rather than a straight blast, since too much PSI can gouge soft grain or blow out fibers. Composite decking and vinyl fencing can handle more pressure but still need the right chemical mix to avoid streaking or dulling the finish.
When you're comparing contractors, look for a few things: whether they explain their pressure settings and chemicals before starting, whether they mention brightening treatments for gray, weathered wood, and whether they're upfront about what a deck can and can't handle based on its age and condition. A rushed job that skips rinsing thoroughly or ignores rail balusters and stair stringers usually shows up as streaking within a week.
We score the 8 businesses in this category on things like communication, consistency of results, and how they handle surface-specific jobs like wood versus composite. For the full ranked breakdown, see our guide to the best pressure washers in West Columbia, and check our methodology page for how we weigh each factor.