There is a meaningful difference between running high-pressure water across a concrete surface and pressure washing it properly. Pressure alone does not remove contamination that has penetrated into the surface pores of concrete. Algae and mildew that have established themselves across a shaded patio need appropriate treatment before pressure washing begins: without pre-treatment, the root structure of the growth remains in the surface and regrowth follows within weeks. Oil staining from vehicle leaks requires degreasing products that break down the oil before it can be lifted from the concrete. Applying too much pressure to the wrong type of concrete surface causes surface damage that is not immediately obvious but accelerates deterioration over time. Stamped and decorative concrete surfaces need to be washed at pressures that clean effectively without affecting the sealer that protects the finish beneath it. Older concrete that has developed surface porosity needs a different approach than dense, well-cured newer concrete. Our pressure washing approach matches the technique, the pressure settings, and the pre-treatment products to what the specific surface and specific contamination actually require. The result is a genuinely clean surface rather than one that looks better briefly and returns to its previous condition quickly.