These are the stains that are left behind after a house wash or surface cleaning — whether it be oil, rust, red clay, or efflorescence.
Homeowners with rust streaks running down the driveway from a sprinkler or fertilizer, oil spots where a car parks, red clay worked into concrete, or a white haze on brick and pavers.
More pressure does not remove a stain — it just wears down the surface around it. Each type of stain has its own chemistry, so we match the treatment to both the stain and the material underneath, then rinse at a pressure the surface can handle.
Most improve dramatically and many disappear completely. Old oil that has soaked deep into concrete is the stubborn one — we will tell you honestly what to expect before we start.
Usually iron in well water from a sprinkler, or fertilizer that got thrown onto the concrete. Both leave rust that a normal wash will not touch.
Surface cleaning gets the dirt and algae. Stains like these need their own treatment, which is why we quote it separately.