You probably are aware of the importance of cleaning the exterior of your home on a regular basis, and have familiarized yourself with some of the benefits of pressure washing (such as increased property value, mold prevention, etc.). But you may be unfamiliar with another option called soft washing.
Soft washing is a cleaning method that utilizes special nozzles on the end of a pressure washing wand to reduce the water pressure from several thousand PSI down to something closer to that of a typical garden hose. The pressure is reduced because unlike pressure washing, soft washing uses a biodegradable cleaning solution that works with the water to that eliminate algae, mold, moss, and other biological elements from your house. Soft washing also removes pollen, dirt, and stains, and it does it all without damaging surfaces with high-pressure water.
In the soft washing process, after the cleaning solution is applied to your home, it will be left to sit for several minutes so that it has a chance to be absorbed into the pores and cracks of your siding and break down the dirt and other materials it encounters. It is then rinsed off using low-pressure water. In sum, soft washing is for most uses on the exterior of your home and pressure washing is for resistant surfaces and groundwork.
In most cases, you only need to use soft washing or pressure washing, not both. We usually recommend soft washing for residential homes to avoid damaging siding, windows and roofs. Pressure washing should only be done on strong, durable surfaces like fences, decks, sidewalks, pathways, driveways, and patios. Soft washing is not recommended for use on these surfaces, but it will work just fine on the sides and roof of your home.