Pressure Washing Exposed Aggregate Concrete Safely
Pressure washing exposed aggregate concrete is safe when the slab is sound, the washer uses the lowest effective pressure, and chemical dwell time does most of the cleaning. Start around 2,000-2,500 PSI, use a 25- or 40-degree spray pattern or correctly matched surface cleaner, keep the nozzle moving, and test an inconspicuous area before washing […]