What a surface cleaner is
A surface cleaner looks like a round hood on wheels. Under the hood, a spinning bar with nozzles sprays the concrete at a fixed height and distance. The operator walks it in overlapping passes, like mowing a lawn.
Why it beats a hand wand on flat concrete
With a wand, the distance between the nozzle and the concrete changes with every arm movement. Closer spots get cleaner, farther spots stay darker, and the result is zebra stripes. A surface cleaner keeps the distance constant, so the whole slab ends up one even color.
It is also faster and contains spray better, which matters on sidewalks next to storefront glass, parked cars and pedestrians.
What still needs hand work
Edges, steps, corners and curbs still need a wand. Oil, rust and gum need targeted treatment before the surface cleaner pass. The surface cleaner handles the large flat areas; the detail work happens around it.
Where we use it
Driveways, sidewalks, patios, pool decks, parking areas and storefront walkways. Any large, flat hardscape is a candidate.
How to tell if a job was done right
Look across the concrete at a low angle in daylight. A good job shows one consistent color with no swirl marks or stripes. Joints should be clean, and the edges should match the middle.
Key points
Why it beats a hand wand on flat concrete
With a wand, the distance between the nozzle and the concrete changes with every arm movement. Closer spots get cleaner, farther spots stay darker, and the result is zebra stripes. A surface cleaner keeps the distance constant, so the whole slab ends up one even color.
How to tell if a job was done right
Look across the concrete at a low angle in daylight. A good job shows one consistent color with no swirl marks or stripes. Joints should be clean, and the edges should match the middle.