Is 1200 PSI enough to pressure wash a house?

Is 1200 PSI enough to pressure wash a house?

It depends heavily on the siding material and how dirty it is. For light, routine maintenance on vinyl siding with minimal buildup, 1,200 PSI can be sufficient, especially when paired with a cleaning solution that does most of the actual work chemically rather than relying purely on force. However, for heavier algae or mildew staining, or for tougher materials like brick or stucco, 1,200 PSI will likely struggle and require multiple passes or extended dwell time with detergent. This pressure level is actually closer to the safer end of the spectrum for delicate surfaces, making it a reasonable choice specifically because it minimizes the risk of forcing water behind siding panels. If cleaning speed matters more, 1,700–2,000 PSI paired with proper technique will typically finish the job faster.