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Using water pressure alone instead of a graffiti removal chemical will reduce wear and tear on your building, and naturally cuts the cost of graffiti removal. Stubborn layers of paint require graffiti removal chemicals, but use those chemicals operate your equipment with approximately 80 PSI. The low PSI will deliver the graffiti removal product to the surface of the building where the graffiti removal is needed. Higher PSI drives the graffiti removal chemicals deep into the masonry and may cause staining.
|Jennifer Mathes, Ph.D.|