Exterior wood furniture won't withstand elements without care. Hardwoods such as oak, teak or eucalyptus dry out or absorb moisture, resulting in cracks and warps as wood expands and contracts. Weather-resistant woods such as cedar and cypress fare better than pine or fir. Darker furniture such as redwood tends to lighten with age, and light-colored woods like cedar turn gray. Proper care allows it to age with grace.

Soap and Water

For light cleaning of wood furniture, dish soap and water should do the job. Mix it in a bucket, and use a brush or cloth and use the soapy water to clean off dirt. Finish by wiping it down with a soft cloth and allow it to dry. If the furniture is stained or has mildew or mold, stronger solutions may be needed.

Stronger Solutions

Mix powdered oxygen bleach with warm water, and apply the solution to the wood with a soft brush. It will foam as the mixture attacks the dirt and mildew. Allow the solution remain on the wood for 10 or 15 minutes, then use the brush to scrub off the residue, working parallel with grain lines as much as possible. Use a garden hose to wash off the wood. Never use a pressure washer on wood furniture, as it can damage it. Don't use oxygen bleach if you're working with redwood. It reacts to redwood and darkens it. Use oxalic acid instead of oxygen bleach to clean redwood.

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