Concrete Cleaning in Algonac

M-⁠29 is the state trunkline through town, and the city plows and salts its own side streets each winter. Tires carry that brine up the driveway, and the salt water soaks into the surface pores of the slab. Each freeze expands the water inside, and after dozens of freeze-thaw cycles in a season the top of the concrete starts to flake and pit, worst where cars park and drip melt. A spring cleaning flushes the residue out before another summer of rain drives it deeper, and it leaves the slab ready for a sealer if you want one.

Algonac is flat, and a slab on flat ground sheds water slowly. Walks, patios and the shaded side of a garage stay wet for hours after rain, and on a lot with a canal at the back the air stays damp too. Green-black algae and dark mildew grow in that film and make steps slick underfoot. The small black spots on a shaded patio are often lichen, which holds tighter than algae and may need a post-treatment and time to release. Our post on black spots that will not wash off explains why.

On lots that took water in a high-water year, slabs and steps near the seawall can keep a residue line. That line usually lightens with a pretreatment and one pass of the surface cleaner, though older marks may need a second. This service covers poured concrete: driveways, walks, patios, steps and garage aprons, along with the walks and steps leading down to a seawall. Brick pavers and stamped or sealed surfaces are quoted under their own services. Open slab is cleaned with a rotary surface cleaner that holds an even distance from the concrete, and edges and steps are finished by hand with a wand kept low and angled.

What a Bare Wand Leaves on a Slab

A bare wand held close to concrete carves stripes into the surface that show in low sun once the slab dries. It also cuts away the thin cement paste on top and exposes the sand and stone underneath, which leaves the slab rougher and quicker to stain. Concrete that winters of brine have already weakened gives way faster under that force. On a canal lot a careless rinse adds one more problem, sending detergent and grime across the slab and over the seawall into the water.

When to Book Concrete Cleaning in Algonac

Concrete cleaning works in any month without frost. Spring is the most useful window in Algonac, once the plows are done for the season and before summer algae spreads on shaded slabs. Late summer suits a cleaning followed by sealing, since the concrete needs a few dry days between the two. If a high-water spring has marked the slab by the seawall, wait until the water is down and the concrete has dried out.