Warm Springs Mesa built out mostly between the 1970s and the 1990s, which means stucco, painted cedar and T1-11, brick accents, and vinyl on the later infill. Three different things are dirtying those walls up here, and each one needs a different answer than the other two.
Walk a mesa house and you can usually read it without touching anything. The bottom two feet on the irrigated sides carry a chalky white band, that is sprinkler mineral. The north and northeast walls, especially anything shaded by the uphill grade or a fence, carry a thin green-gray film that gets darker toward the ground, that is algae. The south and west walls look faded and leave powder on your palm, that is oxidized paint or oxidized vinyl chalking under full mesa sun with no canopy to cut it. Homeowners tend to book a wash for the one they can see best and are surprised the other two are there. We walk all four elevations before we mix anything, because the north wall and the sun wall do not get the same treatment.
House washing here is soft-wash, not pressure washing. We apply a cleaning solution, let it dwell and kill the organic growth, then rinse at low pressure. On 1970s and 80s stucco that matters, because stucco is a cement skin over lath and a pressure tip will chew the sand finish right out of it and leave a shadow you cannot patch invisibly. On painted cedar and T1-11, pressure lifts the grain and drives water behind the boards. On vinyl, it forces water up under the laps and into the sheathing. Low pressure with the right chemistry takes off algae, cobweb, dust and pollen without any of that. Pricing is $0.18 per square foot and it covers all of those substrates the same way.
Most mesa lots sit above the gravity ditch, so sprinklers here run on treated tap water at roughly 10 to 13 grains of hardness. A head that clips the wall instead of the lawn sprays mineral onto siding every cycle, all summer. On vinyl and painted wood that band usually comes off. On stucco it often does not, and this is the part we would rather tell you before we take your money: porous stucco absorbs the water and the mineral crystallizes inside the surface, not on it. Washing removes the loose crust and lightens the band, but a deep etched line is in the stucco and no soft-wash brings it back. If we see that, we say so on the walkthrough. Fixing the head is what stops it from getting worse.
Algae needs shade and moisture, and mesa lots hand it both on the north side. Split-level and daylight-basement homes here often sit cut into the hill, so the uphill wall gets a retained bank a few feet off the siding. That strip stays damp, holds cool air, and the north elevation never sees direct sun to dry it. Soft-wash kills what is growing and the wall comes back clean, but if the sprinklers are still watering that bank against the siding and the shrubs are still tight to the wall, it will re-seed within a year or two. Pulling plantings back a foot and redirecting the nearest head does more for that wall than washing it twice. We will point out which head it is.
Sun-side walls on the mesa take light morning to evening with no tree cover, and the fine pale grit that drains off the Boise Front settles into that chalk and makes it look worse than it is. Washing removes the chalk layer and the grit, and the wall gets noticeably brighter and stops rubbing off on hands and clothes. What washing does not do is restore faded color. If the paint has oxidized down past the pigment, a clean wall is a clean faded wall, and anybody telling you a wash will bring the color back is selling you a repaint they are not doing. Same on chalked vinyl. We would rather set that expectation on the estimate than have you disappointed on the invoice.
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No, that is the reason we soft-wash instead of pressure wash. The solution does the work and the rinse is low pressure, so the sand finish stays intact. Pressure washing is what damages 1970s and 80s stucco, and once a tip has cut the surface it leaves a permanent shadow. If your stucco already has hairline cracking or failed patches, we will note it before we start rather than rinsing water into it.
Usually on vinyl and painted wood, often only partly on stucco. It is mineral from tap-fed sprinkler overspray, roughly 10 to 13 grains of hardness up here. On a sealed surface it sits on top and lifts. On porous stucco it crystallizes inside the surface and washing lightens it without fully clearing it. We tell you which one you have during the walkthrough, and we will show you the head that is causing it.
It is $0.18 per square foot soft-wash, and it is safe for all siding types, so stucco, cedar, hardie, brick and vinyl price the same. We measure the wall area, not the floor plan, so a two-story downhill elevation counts. Call (208) 453-6760 with your approximate square footage and how many levels the downhill side runs and we can give you a real number over the phone.
Most houses here do fine on every other year, which is less than a lot of companies will tell you. There is no canopy dropping organic debris, so the load is dust, grit and pollen rather than heavy leaf mold. The exception is a shaded north or northeast wall against a retained bank. Those often want annual attention while the rest of the house waits, and we are happy to do just that elevation.
Yes. Older mesa homes have plenty of both, usually as full walls, gable ends or trim. Wood gets a gentler mix and a shorter dwell than vinyl, and we rinse down rather than up so nothing drives behind the boards. If the paint is already peeling or the T1-11 grooves have opened up, washing will loosen more of it. We flag that first so you can decide whether to wash now or paint first.
Yes, and that order matters. House washing throws overspray onto glass, so we wash the siding first and clean windows after, using 100% pure deionized water so the panes dry without spotting. Booking them together saves a trip and a second setup on a hillside lot. We hold same-day and next-day slots most weeks, and every visit carries our 7-Day Rain Guarantee.
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