oil stain concrete cleaning

Oil and grease need a degreaser, then a rinse that has a plan

A house-wash mix will not pull set-in motor oil out of concrete. Degreaser, dwell, and agitation might improve it. Years-old oil often will not disappear.

Oil is a petroleum stain in the pores of concrete. Sodium hypochlorite is for living growth. Spraying bleach on a black drip and hoping is how you get a clean halo around a dark spot. The right first step is a degreaser or a poultice suited to oil, time for it to work, then agitation and a controlled rinse so the oil does not simply move downhill.

Where that rinse goes matters. We do not push a slug of oil and soap into a storm drain or a ditch. If the only exit is the street, the job gets redesigned or declined. That is less convenient than a wand and a slope. It is also the correct way to do it.

Fresh oil, caught early, releases more than a stain that has baked through summers. We will look at the edge of the stain and tell you which one you have before we talk about a number. Concrete sealing, if you want it, happens only after the oil is as gone as it is going to get, and only on a dry slab.

The service this belongs to is Oil and grease treatment.