Sunrise Rim sits on the south rim above the river by Boise State, and the concrete here comes in two ages: 1950s ranch driveways with the broom finish worn off, and infill slabs poured in the last few years. Add New York Canal irrigation water and both stain in ways a Bench tract never does.
Walk a street in Sunrise Rim and you cross sixty years of concrete in a hundred feet. The ranch-era driveways from the fifties and sixties have had the broom finish walked and plowed off them, so the surface paste is gone and the sand aggregate sits proud. That concrete is porous, it holds stain deep, and it does not take a hard tip. Next door on a split lot, an infill build has a slab poured within the last few years, still tight and sealed at the surface, still blooming efflorescence as it cures out. Those two need different work. On the old ranch aprons we run a surface cleaner at reduced pressure so we lift grime without blowing more paste off. On the newer slabs we can run normal pressure but have to watch for cut lines from dwelling in one spot. Same crew, same trailer, two settings.
The New York Canal runs untreated irrigation water straight through this part of the south rim, and a lot of Sunrise Rim yards water off it. That water carries iron and silt that city tap does not. What it leaves on concrete is an orange fan shape, wide at the outside edge, exactly matching where the sprinkler head throws across a driveway or walk. Homeowners usually think it is dirt. It is not. Iron oxide bonds into the pore structure, and pressure alone will not touch it. We treat it with an oxalic-based rust remover, dwell it, then rinse. That takes it out on most slabs and lightens it badly staining ones. Here is the part nobody tells you: if the head keeps hitting the same concrete, the stain comes back in one irrigation season. Turn or shorten that head first, or you are paying us again next year.
Broadway and Boise Avenue box this neighborhood in, and both carry constant traffic with Boise State right across the river. Driveway aprons on the streets nearest those arterials collect road grit, brake dust and exhaust film that grinds into the concrete every time a car turns in. Under that, on the older homes, is decades of accumulated oil from cars that have not been parked there since the nineties. We degrease those spots first, dwell, then hit them with hot pressure. Fresh oil comes up clean. Old oil that has wicked down into porous fifties concrete comes up maybe seventy to ninety percent, and sometimes leaves a gray shadow that is permanently part of the slab. We will tell you which one you have when we look at it, not after we have cashed the check. If a stain is going to stay, you should hear that first.
The original ranch lots here have mature trees on them, which is exactly why people buy on this side of the Bench. The cost is on your north-side walkways and back patios. Leaf litter sits wet through the winter, tannin bleeds into the concrete brown, and any strip that stays damp from irrigation grows a green algae film you can feel underfoot before you can see it. That film is the actual slip hazard on this street, more than ice is. We soft wash algae with a low-pressure detergent pass rather than blasting it, because pressure alone kills the surface growth and leaves the roots in the pores to come back in six weeks. Tannin from leaves lifts well with the right cleaner. If the shaded side of your walk feels tacky underfoot in March, that is what you are standing on.
Pressure washing runs $0.20 per square foot for driveways, patios and walkways. A typical Sunrise Rim ranch driveway is somewhere around 600 to 800 square feet, so measure yours and multiply. Rust treatment and heavy degreasing are the two things that add time, and we quote those up front rather than surprising you. Access matters here more than in most of Boise. Infill builds sit tight to the property line, some older homes now share a driveway or converted alley with a newer build next door, and street parking near Boise State fills up on class and game days. Tell us if there is a gate code or a shared apron when you book. Memberships come Monthly or Quarterly with no contract, and the 7-Day Rain Guarantee applies. Reflekt Window Cleaning is Hunter Stevens and Ethan Seusy, founded 2025, fully insured, locally owned, 4.9 stars across 115+ Google reviews. Call (208) 453-6760.
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Not the way we run it. Ranch-era concrete here has already lost its surface paste, so a hard zero-degree tip in the wrong hands will strip more of it and expose aggregate in stripes you cannot undo. We use a rotating surface cleaner at reduced pressure, which spreads the force evenly instead of concentrating it. If your slab is already spalling or flaking in sheets, we will say so and wash it gently rather than pretending pressure fixes it.
That is iron from New York Canal irrigation water, not dirt. Untreated canal water carries dissolved iron that oxidizes on concrete and bonds into the pores, which is why it shows up as a fan matching your sprinkler throw. Pressure will not remove it. We treat it chemically with an oxalic rust remover. It will come back next irrigation season unless you turn, shorten or swap that head so it stops watering your concrete.
Partly. White chalky bloom on concrete under about two years old is usually efflorescence, mineral salts migrating out of the slab as it cures. We can clean off what has surfaced, but the slab may push more out over the next season or two, especially with irrigation keeping the ground under it damp. That is normal curing behavior, not a defect and not something we failed to remove. It slows down on its own.
Sometimes. Fresh oil that has not fully soaked in comes up clean with degreaser and hot pressure. A stain that has been in porous fifties concrete for twenty years has wicked down through the slab, and washing only removes what sits in the top layer. Expect significant lightening and sometimes a permanent gray shadow. We will look at it and tell you which outcome you are getting before we start, not after.
Late spring through early fall, when nights stay above freezing. If irrigation rust is your main problem, the smartest timing is after the canal water shuts off in the fall, so the clean concrete gets the whole winter before sprinklers start throwing iron on it again. Washing in May and then irrigating over it all summer means you see stain returning by August.
That comes up a lot on split lots around here. We can wash the whole shared apron in one pass, which is cheaper per square foot than two separate visits and avoids the ugly clean-line down the middle where one side got done and the other did not. Talk to your neighbor first and let us know when you book so we plan the water and hose run for the full surface.
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