The dirt on a Boise house is not the dirt on a Star house. Foothills granite grit, aphid honeydew off the North End maples, jet soot on the Bench and four months of inversion film all end up on your siding. We soft-wash it off with pure deionized water at $0.18 per square foot.
Boise is the only valley city built right against the Boise Front, and the foothills feed it. Nightly downslope air out of Hulls Gulch, Crane Creek and the Military Reserve carries decomposed granite grit down onto north- and east-facing walls in the Highlands, Boise Heights and Warm Springs Mesa — pale, fine, and sharp enough to scratch light siding if anyone dry-wipes it. Under the mature maples and lindens of the North End and East End, aphids mist honeydew onto lap siding all summer, and it dries into a sticky sugar film a garden hose will not touch. Add traffic haze off Vista, Fairview and the Connector, jet soot on the Bench under the Boise Airport and Gowen Field pattern, wildfire ash in August, and a winter of inversion film, and one Boise wall is carrying five different soils at once.
A 1905 Craftsman on Harrison Boulevard and a 2019 fiber cement two-story in Harris Ranch do not get the same treatment. On North End and East End bungalows, foursquares and the Warm Springs Avenue Victorians, the siding is painted wood with glazing putty, storm windows and century-old trim, so pressure stays low and we work top down without driving water behind clapboard or into sash joints. Bench ranches in Depot Bench, Morris Hill and Hillcrest are brick and painted lap under short 3:12 eaves, so the top courses collect everything and the stubby overhang gives it nowhere to rinse. West Bench tract homes in Collister and Veterans Park are T1-11 and hardboard, the two sidings most often wrecked by a rented pressure washer. Southwest Boise stucco and Barber Valley fiber cement each take their own pressure and approach angle.
Every wall we rinse gets 100% pure deionized water — no soap, no detergent, no surfactant film left behind to grab next week's dust. That matters more here than most places. Veolia tap water in Boise commonly runs 10 to 13 grains of hardness, and the well-fed West Bench and Southwest Boise zones test harder still, so even a plain hose rinse dries into its own spotting. Worse is the gravity ditch water: the Boise City Canal through the North End and Bench, the New York and Ridenbaugh on the south rim. That water is untreated, silty and mineral-heavy, and one misaimed impact head lays a gritty tan film and hard white spots across white vinyl and light fiber cement. Deionized water has no mineral left in it to dry down, so the wall sheets clean and holds our RainShield finish.
Do this before you call anybody. Take a clean dark rag to a painted lap wall on the south or west side and rub hard. If the rag comes away chalky white, that is oxidized paint, not dirt — a wash will brighten it for a week and then it needs paint, and nobody should sell you a wash instead. If the rag comes away gray and gritty, that is inversion film and foothills dust, and it comes off. Two warnings that save you money whoever you hire: never dry-brush foothills grit, because decomposed granite is sharp and leaves swirl marks in paint and glass, and never point a pressure washer at T1-11 or hardboard, because water gets behind the lap and swells it from the inside. And if you are under cottonwoods near the Greenbelt, skip June — the fluff is still flying.
Two washes a year fits most Boise houses, and the timing is not arbitrary. Late April through May is the first window, after the mid-April irrigation turn-on has pushed the season's dirtiest water through every head and after the elm samaras and maple keys have dropped. That clears winter inversion film and snowmelt silt off the walls before summer heat bakes it on. The second window is October into early November, once the canopy over the North End, East End and Bench has actually dumped, so you are not washing a wall with three more weeks of leaf drop coming. If you are in the foothills or under heavy maples, a quarterly rhythm keeps honeydew and granite dust from ever setting up. We run Monday through Saturday, 7am to 7pm, closed Sunday.
House washing runs $0.18 per square foot, soft-wash, safe on every siding type in the city — painted wood, brick, stucco, T1-11, vinyl and fiber cement. We price wall area, not floor plan, so a single-story Bench ranch lands very differently from a two-story Southwest Boise or Barber Valley elevation, and you get the number before any water is turned on. Memberships are monthly or quarterly with no contract, quarterly saves $100 per cleaning, and every membership includes a free annual screen clean. Every job carries our 7-Day Rain Guarantee. Reflekt is locally owned and fully insured, started in 2025 by Hunter Stevens and Ethan Seusy, and holds 4.9 stars across 115+ Google reviews. Same-day and next-day slots open most weeks — call (208) 453-6760.
ZIP codes: 83702, 83703, 83704, 83705, 83706, 83709, 83712, 83713, 83716 · Part of our wider Boise service area.
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No. We soft wash. On 1905 to 1935 painted wood in the North End, East End and along Harrison Boulevard, high pressure lifts paint edges, drives water behind clapboard and blows out old glazing putty around the sash. We use low pressure and pure deionized water, work top down, and keep the stream off putty lines and storm window frames entirely. Boise's historic districts are the reason we run the equipment we run.
$0.18 per square foot of wall area. A single-story Bench ranch usually comes in well under a two-story in Southwest Boise or Harris Ranch with a great-room elevation, because we price wall, not square footage of the house. Steep foothills lots, second-story access over mature landscaping, and detached structures can move the number, so we quote after seeing the elevations. You get the figure before we start.
Yes. That is aphid honeydew, and the maples and lindens across the North End, East End and Bench mist it onto siding, screens and glass all summer. It is a sugar film, so it streaks, fingerprints and traps dust, and a garden hose just smears it around. Deionized water at low pressure with enough dwell time releases it. If the tree still hosts aphids it will return next summer, which is the classic case for a quarterly membership.
Deionized water works on dirt precisely because everything has been stripped out of it — it pulls minerals and grime back into solution, then dries with nothing left behind to spot. Paired with low pressure and dwell time it handles the Boise soils: inversion film, jet soot off the Bench, foothills granite dust, honeydew and light shade algae. What it is not is a treatment for growth rooted into failing paint. If a wall is that far gone, we will tell you.
No soap means no detergent runoff into your beds, which matters in North End, East End and Bench yards still watered off the Boise City Canal on a flood rotation. We rinse with deionized water only, so what reaches the landscaping is cleaner than what comes out of your tap. We still pre-wet or cover anything delicate against the foundation, and we work around your flood-irrigation day if you tell us the rotation.
Sometimes. Boise winter is when siding looks worst — inversion film, wood smoke, and ACHD road grit and brine off Vista, Fairview and Broadway build up from December through February, and the low south sun shows every bit of it. We will wash on dry days above freezing, Monday through Saturday, 7am to 7pm. When temperatures sit at or below freezing we reschedule rather than put water on a wall that will ice.
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