Caldwell winters are defined by fog as much as by cold. Canyon County holds a low fog layer that lingers for days at a stretch, and combined with the valley inversion it produces weeks of damp, motionless air that films over glass and keeps north-facing surfaces from drying at all.
Every time fog condenses on a window and then evaporates, whatever was suspended in the air stays on the glass. Repeat that daily for a month and the result is a dull film that built with no storm, no splash and no obvious cause. It is the most common winter complaint here and the least understood.
Under a long fog season, north-facing siding and trim simply do not dry. That is precisely the condition organic growth needs, which is why the green film on the north side always looks worst in late winter. Soft-washing at $0.18 per square foot clears it, and doing so before spring is far easier than after it establishes.
With the house sealed and heated for months, interior glass film builds steadily. It is unaffected by outdoor conditions, it can be scheduled in any weather, and it is the surface you actually look through from November to March.
Below freezing we do not run water on exterior glass. Fog also makes some days pointless even above freezing, because nothing will dry. We will say plainly when a week is not worth booking rather than take the job.
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Repeated fog condensation leaves deposits each time moisture evaporates, and inversion-trapped particulate settles on top of that.
Under a long fog season the north wall stays damp for weeks, which is exactly what algae needs. Soft-washing removes it.
Only when temperature and conditions allow. In a freeze, or in fog where nothing will dry, we reschedule.
Yes. It is unaffected by weather and addresses the side of the glass you look through all season.
After pollen and nearby fieldwork settle. We can hold a spot in advance and confirm timing closer to the date.
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