Winter in Garden City is wetter than the valley average and it stays that way. The river corridor generates its own fog, and combined with the inversion sitting over the valley floor it produces long stretches where nothing on the north side of a building dries out at all.
Each time river fog condenses on glass and then evaporates, whatever the air was carrying stays behind. Over a winter of repeated cycles that builds a dull film with no storm and no splash to explain it, which is the most common winter complaint along the corridor.
Weeks of damp without drying is exactly what organic growth requires, and river-adjacent north elevations get the worst of it in the whole service area. The green film that appears in late winter did not arrive in March, it grew all season. Soft-washing at $0.18 per square foot clears it.
Much of the local housing stock is older, with painted wood trim and aged glazing that holds damp longer than modern sealed units. That is worth knowing before pressure is applied to anything, because winter-soft old putty and paint damage easily.
Interior glass film builds all winter with buildings closed and heated, and it is entirely unaffected by fog or freeze. In a corridor with as many unworkable exterior days as this one, it is the service that can be relied on to happen when booked.
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Repeated river fog condensation leaves a deposit each time it evaporates, and inversion particulate settles on top of it.
River-corridor damp means it never dries through winter, which is exactly what algae needs. Soft-washing removes it.
Only when conditions allow. In a freeze, or in fog where nothing will dry, we reschedule rather than take the job.
Yes. Older painted trim and aged glazing hold damp and soften in winter, so they need a gentler approach.
Interior work. It is unaffected by fog or freeze and addresses the side of the glass you look through all season.
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