Pressure washing can be a quick way to clean outdoor furniture, but it's not always the best choice. The answer depends entirely on your furniture's material. For durable materials like aluminum, wrought iron, and some all-weather resins, using a pressure washer on a low setting with a wide-angle tip is generally safe. Always maintain a good distance (at least 12 inches) and keep the nozzle moving to prevent concentrated force.
However, pressure washing is risky for many common materials. It can easily splinter wood, shred wicker and rattan, shatter glass tabletops, and strip protective finishes or paint from any surface. The high-pressure water can force moisture into crevices, leading to rust on metal frames or mold inside cushions.
For most routine cleaning, gentler methods are recommended. Use a soft brush, mild soap, and a garden hose. This combination effectively removes dirt and grime without the risk of permanent damage. Reserve the pressure washer for heavily soiled, sturdy items, and always test on a small, hidden area first. Proper care will extend the life and beauty of your outdoor investment.