Most jobs are performed with a commercial grade 3000+ psi / gas pressure washer
Pressure / Power washing aluminum, steel, vinyl or wood siding removes grit that grinds away the surface like sandpaper when it’s agitated by wind or rain. Power washing your house every year with high-pressure can not only keep it looking clean, but can cut the need to repaint nearly as often. Pressure washing is also a good way to prepare a house’s surface for repainting. If you’re lucky, once the siding is clean you may find that you don’t need to paint after all.