Seeing green or black spots on your wooden bench? Don't worry – mildew and algae are common on outdoor furniture. Here's a simple, effective cleaning method using items you likely have at home.
First, mix a cleaning solution. For light mildew, combine equal parts white vinegar and water in a spray bottle. For tougher algae or heavy mildew, add 1 cup of vinegar to 1 gallon of warm water with a squirt of mild dish soap. Avoid harsh chemicals like bleach, as they can damage the wood fibers.
Apply the solution generously to the affected areas and let it sit for 10-15 minutes. This allows the acidic vinegar to break down the growth. Then, gently scrub the surface using a soft-bristled brush or non-abrasive sponge. Always scrub along the wood grain to prevent scratching.
Rinse thoroughly with a garden hose or bucket of clean water. Let the bench dry completely in the sun – this is crucial to prevent immediate regrowth. For ongoing protection, consider applying a wood sealant or outdoor furniture oil once the wood is fully dry. Regular maintenance, like wiping down after rain and storing under cover during wet seasons, will keep your benches looking fresh for years.