Are pressure washers safe for cleaning stone outdoor armchairs?

Pressure washers can be effective for cleaning stone outdoor armchairs, but caution is required to avoid damage. Stone surfaces, such as granite or limestone, are durable but can be sensitive to high-pressure water. Using a pressure washer with too much force may erode the stone or strip its protective sealant.

For safe cleaning, opt for a low-pressure setting (below 1,500 PSI) and hold the nozzle at least 12 inches away from the surface. Avoid using harsh detergents; instead, choose a mild, stone-friendly cleaner. Always test a small, inconspicuous area first to ensure no discoloration or damage occurs.

Regular maintenance, like brushing off debris and rinsing with a garden hose, can reduce the need for intense cleaning. By following these tips, you can keep your stone outdoor armchairs looking pristine without risking harm.