Driveway & Patio Cleaning in Marengo, IL

Reading the stains: what each color means

White or gray crust is salt and dried mud from winter. Black patches in damp places are algae or mildew. Dark spots near the garage are oil. Orange or rust-brown fans are iron, usually from well water or fertilizer, and they follow the pattern of sprinkler spray.

Photos come before the quote, partly because the kind of stain dictates the method. Iron is not removed the way algae is, and oil needs more dwell time than mud.

• White crust: winter salt and dried residue
• Green or black patches: algae in damp, shaded areas
• Dark spots: oil or grease
• Orange fans: iron from well water or fertilizer

Iron stains on Marengo concrete

Properties on private wells sometimes have iron in the water. Every cycle of the sprinkler leaves a thin orange layer that builds over time. It does not wash off with plain water, and ordinary cleaners can fix it in the wrong way, setting it deeper.

A cleaner suited to rust may be needed, and results vary. Rob is upfront about what he expects, and he would rather under-promise than have you disappointed after a long afternoon of scrubbing. Fertilizer spreaders and some lawn products can leave rust marks too, so the source is not always the well. The best prevention is to aim sprinkler heads away from hard surfaces. Background on the chemistry is in the concrete salt and rust guide.

What winter did, and what cleaning cannot undo

Repeated freezing and thawing, plus salt that tire tracks carry in from US 20 and Illinois 23, wear the top skin of concrete away. A cleaned slab shows the damage more clearly: pitting, flaking and hairline cracks. Cleaning removes dirt, not damage.

If a driveway is cracked or heaved, a concrete contractor is the right call. Rob will say so honestly, and may recommend waiting until repairs are done so he does not clean a surface that will be cut or patched.

Pavers, flagstone and patios

Pavers and patio stone hold algae in the joints and can lose sand when over-washed. Rob adjusts his approach to avoid blowing out the joint material, and notes if sand needs to be replaced afterward. Flagstone is porous and absorbs stains, so cleaning is gentler.

Weeds growing between pavers can be cleared, though they come back unless the joints are re-sanded or sealed. Sealing is a separate decision that Rob discusses based on the surface, and he will not push it where it is not warranted. Pavers laid over poor base material may settle and tilt, and cleaning cannot fix that either. A mason or paver installer handles resetting.

Barn aprons, farm lanes and the mud that comes with them

Properties near Marengo's farmland often have concrete in places a suburban lot never would: the apron in front of a machine shed, a pad outside a barn door, a short paved stretch where the gravel lane begins. These surfaces carry packed mud, manure residue, tire marks and hydraulic oil, and they stay dirty because they work for a living.

Cleaning them is a different pace than a front walk. Rob scales the effort to the surface and the purpose, and he will tell you if oil has soaked so deep that some shadow will remain. Send a wide photo that shows the whole pad and the slope toward any drain or ditch, so he can plan where the rinse water will go.

Runoff, wells and the lay of the land

Water has to go somewhere. On rural-edge Marengo lots, rinse water heading toward a wellhead or a neighbor's yard needs some forethought. Rob studies slope and drainage first, and keeps cleaner away from plants and the well.

Do you have a well on the property? Point out where it sits. For related surface work, see pressure washing and, when you want the whole front of the house done together, curb appeal packages.

Driveway & Patio Cleaning through the year in Marengo