What range of psi corresponds to a low pressure wash in the material?

• A. 2000-4000 psi
• B. 1000-1500 psi
• C. 0-500 psi
• D. 5000-7000 psi

Answer: (A)

The main idea is choosing a washing pressure that cleans effectively without risking surface damage. Low pressure washing aims to remove dirt, mildew, and loose paint without gouging or forcing water into gaps. The 2000-4000 psi range is often considered a gentler, effective option for many exterior materials, providing enough power to clean without the risk of the heavier damage that higher pressures can cause. The lower end (0-500 psi) wouldn’t remove much dirt, and the higher end (5000-7000 psi) is likely to damage surfaces. A middle range like 1000-1500 psi can be insufficient for tougher grime or coatings, so 2000-4000 psi best fits the intended balance in many painting prep scenarios.