The answer to 'pressure washer mildew' is that pressure washing can be an effective way to remove mildew, but it's important to use the right technique and equipment. Mildew is a type of fungus that thrives in damp, humid environments and can grow on a variety of surfaces, including siding, decks, and patios. Pressure washing can help lift and remove mildew, but if not done properly, it can also damage the underlying surface.
When using a pressure washer to remove mildew, it's important to use a low-pressure setting and a wide-angle nozzle to avoid damaging the surface. You should also use a detergent or cleaning solution specifically designed for mildew removal, and allow it to sit on the surface for several minutes before rinsing. If the mildew is particularly stubborn, you may need to use a scrub brush or other tools to help loosen it before rinsing.