Siding in Sienna Hills carries algae on the shaded walls and an irrigation band along the bottom three feet. It sits in Caldwell just off S Georgia Ave, a short run from Karcher Rd in 83607, and it is a long build-out — the plats run 2007–2021 across 12 phases, so the housing stock spans a decade or more. At roughly 137 acres and about 402 lots it is one of the larger communities in the city — which is what the quote is built from.
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Exteriors here collect three separate things. On north and east elevations, where sun never fully dries the wall, you get algae and mildew as a green-black film. Along the bottom three feet you get mud splash and irrigation overspray staining — the same mineral that marks the glass marks the siding, and on light vinyl it reads as a permanent dingy band. Everywhere else you get Canyon County farm dust off the dairy, seed-crop and row-crop ground that still surrounds the city on three sides, plus the harvest traffic that comes with it. Each needs different treatment, which is why one pass with a pressure wand does a poor job on all three. With 12 phases recorded, the older streets show it further along than the newest ones, and we price accordingly.
House washing is a chemical process, not a force one. We apply a surfactant and sodium-hypochlorite blend at low pressure, give it dwell time to kill the growth at the root, and rinse. High pressure drives water up behind lap joints and into the wall assembly, strips the chalking layer off aging vinyl, and on stucco and manufactured stone it will take the finish off outright. Soft washing kills the algae rather than knocking the top off it, which is why it stays gone longer. We pre-wet and rinse every bed on the wash path. On Sienna Hills's newer builds the warranty paperwork usually still matters, so we work in a way that will not give anyone a reason to void it.
Caldwell is one of the few cities in the valley that runs its own irrigation district — the Caldwell Municipal Irrigation District delivers untreated surface water to yards across town, and a lot of the older grid is still on gravity rather than pressure. What reaches the glass is canal water either way. On a Sienna Hills property that shows up as a shorter useful interval than the same work would hold somewhere else in the valley, which is worth knowing before you decide how often to book. Sienna Hills routes off S Georgia, so getting here is not a special trip.
Soft washing removes organic growth and dirt. It will not fix oxidised vinyl, it will not pull efflorescence out of masonry, and it does not repaint anything. Reflekt has been operating since April 2025, which is a shorter history than some of the companies you may be comparing us against. We would rather you knew that up front.
Most Sienna Hills customers book this alongside window cleaning. Partly that is price, partly sequence — washing walls after cleaning glass puts dirty water back on clean panes, and hanging lights before clearing gutters means working around your own strands in January.
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Not at soft-wash pressure. The mix is diluted, beds are pre-wet and rinsed, and we never drive water behind lap joints. We will point out anything already failing before we wash it.
Yes — Sienna Hills is on our regular Caldwell routing in 83607. We already run Salita St, Veraison Way and Pillar Rock St. Locally owned, fully insured, rated 4.9 stars across 125+ Google reviews. Call (208) 453-6760 or get a quote online.
$0.18/sq ft soft-wash. The final number depends on the property, and there is no contract and no membership requirement. Booking it alongside another service on the same visit is the cheapest way to do it.
Every one to two years for most homes. North-facing walls and anything shaded by a fence or neighbouring house grow back faster and may want annual attention.
The wash rinses them but it is not a window cleaning — soft-wash mix leaves residue on glass. Book them together and we do the glass after the walls, in that order.
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