The Highlands sits above the canal line, so the spots on your glass aren't ditch water — they're treated municipal water off your own meter, around 10 to 13 grains hard. Which windows take it depends almost entirely on where your heads sit on the slope and what decade they were installed.
Down on the Bench and along Hill Road, most summer spotting comes off gravity ditch water — silty, untreated, straight out of the canal. The Highlands sits above that line. Almost every yard up here irrigates off the house meter with treated Veolia water, which commonly runs 10 to 13 grains per gallon. That changes what we are removing. Ditch water leaves a gritty mineral crust with dirt bound into it, and a lot of it washes off. Meter water leaves clean, hard calcium scale — less obvious the first summer, harder to lift the third, because it bonds evenly across the whole pane instead of sitting in visible streaks. It also means the damage is entirely your own system's doing, which is good news: re-aim the head and the etching stops that day.
The original 1960s and early-70s sections off Curling Drive and Bogus Basin Road were mostly hand-plumbed — brass impact heads on risers, aimed once by whoever set them and never touched since. Those throw a hard wide arc that slaps the house, and the damage under them is heavy and local: one bad head, one wrecked window, everything around it clean. The mid-80s builds out toward Braemere and Highland Valley came with automatic pop-ups and matched nozzles, so the pattern is a fine mist drifting across a whole elevation instead of a jet hitting one pane. That damage is lighter but universal, and people usually don't see it until the low autumn sun rakes across the wall and every window goes milky at once.
On a split-level or a daylight basement, the walkout floor's glass sits at lawn grade — the same height as your spray heads. The floor above it is fifteen feet up and stays clean. So the pattern here is almost always a hard horizontal line: the lower band is etched and the identical units above it are fine. Which elevation gets hit depends on the slope. Street-side yards on the uphill lots drain toward the house, so heads were aimed away long ago and that glass usually survives. The downhill side is where the lawn is, where the big fixed picture units are, and where heads have to throw uphill into the evening downslope air off Crane Creek. That is the wall we end up quoting nine times out of ten.
Run a fingernail across the spot. If it's smooth and purely visual, it's surface scale — that comes off completely with a mild acid wash and a hand polish, and the pane looks new. If your nail catches on the ring, the mineral has started biting into the silica and we're into a restoration polish: cerium oxide on a rotary, slow, priced accordingly. If a window has taken sprinkler water through eight or ten summers, the honest answer is that we can improve it, not erase it. Etched glass is missing glass. Anyone promising a guaranteed like-new result on twenty-year-old scale is going to sand a visible distortion into your picture window. Tempered units are worse — softer surface, polishes unevenly — so on tempered we stop early rather than warp the view.
Removal without fixing the source is a service you get to buy again next October. Walking the system takes ten minutes and it's the part that lasts. Usually it's one or two rotors that have drifted a few degrees on the riser, or a pop-up a mower clipped that now leans into the house. Turning the arc, dropping to a lower-trajectory nozzle, or moving a head two feet off the foundation solves most of it. If your lot backs Crane Creek Country Club or fronts an HOA-maintained common strip, you don't control that head — say so and we'll plan a shorter maintenance interval instead of pretending otherwise. Stain removal is quoted by severity once we've seen the glass, and routine spot removal is included on the Monthly membership. Fully insured, locally owned, 4.9 stars across 115+ Google reviews. Call (208) 453-6760.
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Because that's the only glass at sprinkler height. On a Highlands daylight basement the walkout floor sits right at lawn grade with the heads, and the floor above is well out of range. It's the single most common call we get up here: a hard line across the elevation, etched below it, clean above. It also tells us the source is irrigation and not weather, which makes the fix straightforward.
Maybe partly. Feel it first — if your nail catches, that mineral has etched into the glass, and etching is material that's gone. We can polish it back toward clear, and on a long-neglected pane that usually means a real improvement rather than a perfect result. On a large fixed unit we'd rather leave a faint ghost than polish a wave into a window you look at the whole valley through. We'll tell you which one you're getting before we start.
On fresh scale from this season, vinegar and a plastic blade will lift a lot of it. On anything baked through a Boise summer, no. And be careful what runs off the pane: a lot of the older Highlands houses have thin anodized aluminum frames, and CLR left sitting on anodizing stains it permanently in a way that doesn't polish out. If you try it, work small, keep it wet, and rinse constantly.
By severity, after we look at the glass, because a light seasonal haze and a ten-year etched ring are completely different amounts of labor. Light surface scale is often folded into a regular window cleaning. Heavy restoration on a big fixed unit is quoted on its own. If you're on the Monthly membership, routine spot removal is included and the problem generally never gets to the restoration stage. Call (208) 453-6760 and we'll price it.
Yes, though it's management rather than a cure, since you can't re-aim a head you don't own. We remove what's there and put you on a tighter interval so the mineral never sits long enough to etch. Take a photo of the head throwing during a run — a timestamped picture of water hitting your house is far more persuasive at an HOA meeting than a description of spotted windows.
We finish with a rinse of 100% pure deionized water so nothing dissolved gets left behind as the pane dries, and freshly polished glass does shed water better for a while. We don't sell a coating as a permanent shield, because it isn't one — a head throwing calcium at your window every night will beat any sealant available. Fix the aim and you won't need one.
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