Soft-washing techniques work best for cleaning your home's siding and roof. Pressure washers with soft-washing nozzles risk damaging siding, cracking roof tiles, and breaking glass windows. Soft-washing services, on the other hand, are entirely safe for all exterior home surfaces.

With soft washing, you're still using enough PSI to get a lot of height out of your pressure washer, which means you can clean your entire house from ground level, without the use of ladders or scaffolding.

When professionals think of soft washing roofs and siding, the top cleaning chemical used is a professional-grade 12.5% sodium hypochlorite, or bleach, mixed with water.

Soft wash roof cleaning is a low-pressure washing procedure that combines chemicals to clean the roof surface. Unlike using a pressure washer, where water is passed under high pressure, the soft wash system relies on low pressure to get rid of the organic growth on the roof and scour the black streaks they leave.