What equipment is best for DIY house washing without damage?

What equipment is best for DIY house washing without damage?

For DIY house washing, an electric pressure washer in the 1,200–1,900 PSI range paired with a wide 40° fan-tip nozzle is the safest combination for most siding materials, since it minimizes the risk of stripping paint or forcing water behind panels. A dedicated house-wash detergent, rather than generic dish soap, helps lift dirt and mildew chemically so you’re relying less on raw pressure to do the work. For roofs specifically, skip a pressure washer entirely and use a low-pressure pump sprayer with a soft-washing solution instead, since even moderate pressure can strip protective shingle granules. Keep the nozzle at least 12–18 inches from the surface, work top to bottom, and always test an inconspicuous area first. A soft bristle brush handles any spots that soap and gentle rinsing don’t fully clear.