Test for mildew by applying a drop of undiluted liquid household bleach to a small, black spot. If the spot disappears after a minute or two, clean the deck with a mild cleanser (no ammonia) and rinse with a solution of 1 part household liquid bleach to 4 parts water, and then rinse....
Although often used interchangeably, pressure washing and power washing are different ways to clean surfaces. Both use high-pressure sprays, but a power washer uses hot water, and a pressure washer uses cold. For simple cleans, this may not make a huge difference. However, the hot water will...