Calgary concrete cleaning for sidewalks, back slabs, dog runs and garbage pads
Anything horizontal and concrete around the property — back-of-house slabs, basement walkouts, side-yard walkways, RV pads, the strip at the bin enclosure. Surface cleaner pass plus targeted chemistry on the salt staining and oil drops. Most Calgary concrete-only jobs land between $200 and $500 depending on square footage and stain depth.
Salt staining, leaf tannin and the ground-in winter grit
Calgary concrete picks up three layers of staining most homeowners do not see until they spray a hose at it. Layer one is the surface dust and BBQ ash, which a regular wash takes off. Layer two is the leaf tannin — autumn maple and aspen leaves leave brown circular stains that need a longer surface cleaner dwell to lift. Layer three is the deepest, road salt that has soaked in over winters and shows up as white efflorescence in the spring, plus oil drops from the lawnmower at the side of the garage.
The surface cleaner handles the first two layers in one pass. The efflorescence and oil need a chemistry pre-treatment plus a second pass. We pair concrete cleaning with driveway cleaning when both the front slab and the back-of-house slabs are due, with patio cleaning when the back-yard living space is part of the scope, or with paver sealing when the walkway is interlock instead of poured concrete.
Recent work
How a Calgary concrete clean runs
Four steps from staining survey to dry slab
Walk and stain survey
Walk the property with you, mark efflorescence patches, oil drops, leaf tannin stains and any spalling we will not be cleaning. Pre-treatment areas tagged so the chemistry goes on first.
Pre-treat the stains
Buffered phosphoric acid on efflorescence, degreaser on oil drops, longer dwell on leaf tannin. Pre-treatment runs while the equipment is set up so the chemistry has been working before the surface cleaner pass.
Surface cleaner pass
16-inch disc for sidewalks and walkouts, 21-inch for larger slabs. Overlapping passes at matched pressure for the substrate. Edges run with a wand at the lawn line.
Rinse, sweep, walkaround
Final rinse to take the residue down the storm gutter or grass-safe drain, broom sweep for any joint sand, walkaround with you to spot anything missed. Invoice matches the quote.
Calgary concrete realities
Road salt, chinook freeze-thaw and the basement walkout problem
Calgary slabs are tougher than most cities ask theirs to be. Road salt comes off the roads in October and the residue sticks to every walkway, driveway and back patio. Chinook freeze-thaw works moisture into hairline cracks in unsealed concrete, the cracks grow each year, the surface develops the spalling pop-outs we see on five-year-old back-of-house slabs. Basement walkout stairs collect leaf debris and salt and turn black faster than the rest of the property because they hold water in the corners.
Annual cleaning catches all three issues before they become structural. We pair concrete cleaning with sealing services when the homeowner wants a fresh penetrating sealer applied a week after the wash — sealed concrete sheds salt and rejects the next year of staining cleanly. For pavers or interlock walkways instead of poured concrete, the paver sealing service is the right pairing because the joint sand needs replacement too.
Written quotesPricing
Annual + as-neededCadence
Hartford concrete cleaningOutcome
Pair concrete cleaning with
Other flatwork services on the same visit
When the surface cleaner is already on the truck, every poured or interlock surface around the property costs only the labour above the equipment set-up. Combine for the cleanest property.
Five questions that come up on most flatwork quotes.
Back-of-house slabs, dog runs, garbage pads, basement walkout steps, walkways from the garage to the back yard, RV parking pads, shop floors that face outdoors and the apron at the side of the house where the trash bins sit. Anything horizontal and concrete, the surface cleaner is the right tool for it.
Yes, the white deposits on concrete are calcium and magnesium salts that migrate to the surface as the slab cures or, on older slabs, as winter road salt soaks in and dries out. We treat them with an acid-based concrete cleaner (usually a buffered phosphoric acid) plus a rinse. Heavy efflorescence sometimes needs two passes a few days apart to fully clear.
Smaller surface cleaner (16-inch instead of 21-inch) for the narrow width, plus more wand work at the edges since the lawn and the perennial beds usually sit right against the concrete. Pressure is matched the same way, but the prep work to keep the chemistry off the lawn is more careful. The slab clean is the same speed once you adjust for the disc size.
We do not. Spalling (the flaking pop-outs on the slab surface from freeze-thaw damage) is a structural problem, not a cleanliness problem, and the right fix is a concrete patching or a polymer overlay from a concrete contractor. We will tell you straight whether the slab needs a wash or a fix at the visit, and we will point you at a concrete trade if structural work is what the slab needs.
Annual is the right call if the slab gets winter road salt or sits under a deciduous tree that drops tannin-staining leaves. Wait-until-dirty is fine for back-yard slabs that mostly see foot traffic. The visible difference between an annual maintenance wash and a five-year-deep clean is significant, the maintenance wash keeps the slab from staining at depth and the wash dries clean in a day.
Calgary concrete cleaning reviews
What homeowners say after the flatwork wash
★★★★★4.9· 75 reviews on Google
★★★★★
Basement walkout stairs had gone almost black with five years of leaf tannin and salt. Hartford pre-treated, ran the surface cleaner at matched pressure and the concrete looks like the day it was poured. They flagged a spalled corner and gave me a concrete contractor name.
W. J.
Calgary · Glamorgan
★★★★★
Side-yard slab where the trash bins sit had years of muck. Crew did the slab plus the dog run on the same visit, no upsell, the property looks tidier from the alley now and the bins do not stick to the slab in the morning.
O. K.
Calgary · Forest Lawn
★★★★★
Efflorescence on the back patio had been bugging me for three summers. They explained the chemistry, did the acid pre-treatment plus the surface cleaner pass, two visits a week apart to get the worst of it. Worth the extra trip.
V. H.
Calgary · Riverbend
★★★★★
RV pad at the side of the house plus the walkway to the back yard. Both came up clean in one morning. The crew respected the lawn line and the perennials on the edge of the walkway, no chemistry where it should not be.
I. N.
Calgary · Discovery Ridge
From the blog
Concrete cleaning and flatwork care notes
Free written estimate
Get your Calgary concrete cleaning quote in writing
Tell us the slabs you want cleaned — back patios, sidewalks, dog runs, walkouts, garbage pads — and whether you have efflorescence or oil staining. A Hartford estimator follows up within one business day. Most jobs land in the $200 to $500 range.
