Most rooftop solar in Star sits on post-2018 roofs angled south or southwest, which happens to be the same direction Canyon County farm dust and canal-overspray drift blows in from. We strip that film with 100% pure deionized water, no soap, quoted by array size.
Solar in Star is a newer install than window glass — most panels went up on unshaded south- or southwest-facing roofs after 2018, and that orientation faces the exact direction the dirt comes from. Star's west side runs to the Ada/Canyon county line at Can-Ada Road, and the ground past it is working farmground, more of it than any other county in Idaho. Northwest wind pushes that dust onto Star roofs in three waves: spring disking and planting, hay cuttings from May through September, and the heaviest load, corn silage chopping and grain harvest August through October. A south-facing array collects that film at the same low angle it collects sun, so a haze that would just gray a north-facing window can measurably drop panel output before you'd notice it by eye.
Nearly every subdivision in Star runs untreated pressurized irrigation off Boise River canals and laterals, live roughly mid-April through mid-October, and because lots here are small and new, sprinkler heads often sit close enough to throw water onto ground-floor windows — and on single-story homes and detached shop roofs, onto the panels themselves. That water carries suspended silt on top of dissolved calcium and magnesium from the aquifer, and it bakes on hard in 95-to-100-degree afternoon sun. Baked mineral spots scatter light across a cell and pull output down more than an even layer of dust would. Soap makes it worse — the surfactant residue re-attracts field dust on the next windy day. We run pure deionized water with nothing dissolved in it, so panels sheet dry clean and don't reload as fast.
Star's dominant roof is architectural asphalt shingle on a two-story modern-farmhouse frame, and shingle gets soft and tears under boot pressure once it's been in afternoon sun — the same reason we never walk the panels themselves. Foot pressure can micro-crack a solar cell under the glass with no visible mark, and it voids most module warranties outright. We work the array with a water-fed carbon-fiber pole and a soft brush from the roof edge or the ground, no pressure washer, since a pressure stream can breach the frame seals along the panel edge. On the acreage parcels along Floating Feather Road and toward Freezeout Hill, where arrays are sometimes ground- or pole-mounted rather than roof-set, we reach those at grade with the same water and the same finish.
Check your inverter or monitoring app before you call anyone, us included. Compare a clear-sky day this week to a clear-sky day a month or two back — a steady drop on sunny days with no shading change usually means soiling, not a hardware problem. Then look at the glass: an even tan haze across the whole array is farm dust or construction grit and worth acting on once it's visible, but a small patch of shade from a tree branch or a vent pipe isn't a cleaning problem, it's a placement problem cleaning won't fix. If your roof faces east or north, away from the prevailing dust, or you're set back from both Can-Ada Road and the river, you can often run twice a year instead of quarterly — let the monitoring data make the call, not the calendar.
Spring brings disking dust plus canal turn-on around mid-April, which spots south-facing glass within about a week of the water coming on. Summer is the hardest stretch — June cottonwood fluff off the Boise River mats into any array near Star Riverwalk Park or the river-bottom acreage, hay cutting kicks dust every few weeks, and daily sprinkler overspray bakes on in triple digits. Fall's corn silage chopping and grain harvest deliver the year's heaviest single dust load, right as output already starts declining with shorter days, which is when a dirty array costs you the most kilowatt-hours per dollar of lost production. The two clean windows are late April to early May, after canal turn-on but before the heat locks spots in, and mid-to-late October, after harvest dust settles but before winter inversion film starts.
Solar is quoted by array size, not a flat rate, since a six-panel string on a garage roof and a full southwest-facing array on a Heirloom Ridge or Milestone Ranch two-story aren't the same job. Text a panel count or a photo to (208) 453-6760 and we'll price most homes without a walk-through. Monthly and Quarterly memberships run with no contract, quarterly service saves $100 a cleaning, includes a free annual screen clean, and every job carries a 7-Day Rain Guarantee. Same-day and next-day slots are usually open. Reflekt Window Cleaning is locally owned by Hunter Stevens and Ethan Seusy, founded 2025, fully insured, based in Meridian, and rated 4.9 stars across 115+ Google reviews. Monday through Saturday, 7am to 7pm, closed Sunday.
ZIP codes: 83669 · Part of our wider Star service area.
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Most south- or southwest-facing arrays here do well on a quarterly cadence, timed around late April/early May and mid-to-late October, because that's what lines up with canal turn-on, hay cutting, and harvest dust. If your roof faces away from the prevailing northwest wind or sits well off Can-Ada Road and the river, twice a year is often enough. Check your inverter's sunny-day output trend before deciding — it's a better signal than a fixed schedule.
Yes, if the film is visible. An even haze of farm dust or a baked irrigation spot pattern scatters light across the cell and measurably drops sunny-day output — most owners see production recover after a proper clean. If your array already looks clean and your monitoring app shows steady output, you don't need to clean yet; check the data before booking.
You can, but in Star it usually backfires. Your sprinklers likely run untreated canal water carrying silt, and your tap water off the aquifer is hard and mineral-rich — both dry into spots that bake on and scatter light in 95-plus heat. Deionized water has those solids stripped out, so it dries spot-free, which is the entire reason we use it instead of a garden hose.
No. We never step on the modules — foot pressure can micro-crack a cell under the glass with no visible mark and voids most warranties — and Star's architectural shingle roofs get soft and tear underfoot in afternoon sun anyway. We clean from the roof edge or the ground with a water-fed pole, no pressure washer, since that can breach the panel's frame seals.
Yes. On the larger county parcels along Floating Feather Road and up toward Freezeout Hill, ground- and pole-mounted arrays are common, and we reach those at grade with the same water-fed pure-water system we use on rooftop arrays. Private well water and long gravel drives aren't a problem — we bring our own deionized water.
We quote by array size rather than a flat rate, since a small garage-roof string and a full two-story southwest-facing array are different jobs. Text a panel count or a photo to (208) 453-6760 and we'll give you a price for most homes without a walk-through. Monthly and Quarterly memberships have no contract, and quarterly saves $100 per cleaning.
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