Greenhurst driveways are mostly 1990s broom-finish concrete, poured fast and never sealed. Thirty years on, that surface is open and porous — and the pressurized irrigation off the Lake Lowell canals paints it orange every summer. Rust from sprinkler overspray is the number one thing we get called out here to fix.
Most of the flatwork in Greenhurst went down in the 1990s, when this end of south Nampa filled in fast. It's builder-grade broom finish — poured thin, floated quick, and in almost every case never sealed. Thirty years of Idaho freeze-thaw has opened that surface up. Run your hand across a Greenhurst driveway and you can feel it: the cream layer has weathered off and the broom grooves are deeper and rougher than the day they were struck. That matters for washing. A porous surface holds stains instead of shedding them, and it means a careless wand tip will carve lines into it that never fade. We clean this concrete with a rotary surface cleaner at controlled pressure, even overlapping passes, instead of chasing stains around with an open tip.
The rust-colored staining on driveways and walks out here almost never comes from something you parked. It's the irrigation. Greenhurst is on canal water fed off the Lake Lowell system, and that water carries iron and sediment that treated city water doesn't. Every sprinkler head that throws part of its arc onto concrete lays down a film of iron, and the sun bakes it in. You can usually read the sprinkler pattern right in the stain — a fan or a half circle, darkest at the outer edge. Pressure alone will not take that out. Iron staining is a chemical problem, not a dirt problem: it takes an oxalic-based rust treatment, dwell time, then a rinse. And it comes back by August unless those heads get adjusted or shielded so they stop hitting the slab.
The rest of the job here is plain grit. Greenhurst sits on the open southwest edge of Nampa with farm ground and gravel field roads running out toward the lake, and the tree canopy in these subdivisions never got tall enough to slow the wind down. Fine ag silt blows in and packs into the broom grooves, where a garden hose floats off the top layer and leaves the rest sitting in the texture. Add tire-track grime at the apron, the dark mildew band along the north side walk that stays shaded most of the day, and the green algae film on a covered patio slab. Nothing dramatic — just uniformly loaded concrete that comes back several shades lighter with a surface cleaner and real flow behind it.
Worth knowing before you pay anyone. Old motor oil that has soaked into unsealed thirty-year-old concrete will lighten, not vanish — the slab is porous and the oil is down inside it. A degreaser and a hot rinse pull most of it; expect a shadow, and don't let someone promise otherwise. Concrete that's already spalling, where the top layer is flaking off in chips near the garage apron or along a walk edge, should be washed gently or left alone entirely, because pressure will lift more of it loose. Same with exposed rebar or a crumbling edge. And if your driveway is just dusty and the stains are seasonal, a hose and a stiff broom will hold you until spring. We'll say so on site if that's the real answer.
Flat concrete — driveway, walkways, patio, garage apron — runs $0.20 a square foot, and we measure rather than guess. Siding is a different animal: the LP hardboard and T1-11 on Greenhurst-era houses swells and delaminates under a pressure tip, and the paint can strip in sheets. That gets a soft-wash at $0.18 a square foot, low pressure with the solution doing the work. Gutters start at $199. Memberships come Monthly or Quarterly, no contract, with a 7-Day Rain Guarantee. Reflekt was started in 2025 by Hunter Stevens and Ethan Seusy — locally owned, fully insured, 4.9 stars across 115+ Google reviews. Same-day and next-day slots open most weeks. Call (208) 453-6760.
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It's iron in the irrigation water. Greenhurst is on canal water off the Lake Lowell system, which carries iron and sediment that treated city water doesn't. Any sprinkler head throwing part of its arc onto the slab leaves a film that bakes in under the sun. Look at the shape of the stain — if it's a fan or half circle, that's your sprinkler pattern telling you exactly which head is doing it.
Not by itself. Iron staining is chemical, not dirt, so blasting it only cleans the concrete around it and makes the orange look worse by contrast. It needs an oxalic-based rust treatment, dwell time, then a controlled rinse. That does lift it. But unless the sprinkler heads are turned or shielded, the same stain will be back within a season — the treatment fixes the slab, the sprinkler fix keeps it fixed.
Not with a pressure tip. The LP hardboard and T1-11 siding on 1990s Greenhurst houses swells and delaminates under high pressure, and the paint can come off in strips. We soft-wash it instead at $0.18 a square foot — low pressure, cleaning solution does the lifting, gentle rinse. That clears the field silt and the north-side mildew without driving water behind the boards or up under the trim.
Not the way we run it. The risk on aged broom finish is two things: etching from too much pressure held in one spot, and zebra striping from an open wand tip swung by hand. We use a rotary surface cleaner with even overlapping passes at controlled pressure, which spreads the load. The one exception is concrete already spalling or flaking — we wash that softly or tell you to leave it be.
Once a year handles most homes out here, ideally in spring after the irrigation has been off all winter and before the season's iron builds up again. If your sprinklers hit the driveway hard or you back onto gravel or open farm ground, twice a year keeps ahead of it. Covered patios with algae film are the exception — those often want a mid-summer pass, since shade keeps the growth going.
On unsealed 1990s concrete it's worth considering, because a sealed surface sheds iron and oil instead of drinking them in, and the next wash goes far easier. It has to go on fully dry concrete, which usually means a separate dry day, not the same afternoon we wash. We don't upsell it — if your slab is spalling or holds moisture, sealing can trap the problem, and we'll tell you that.
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