Ground-floor retail glass gets dirty faster between November and February than at any other point in the year, and not for the reason most people assume. It isn’t the rain. It’s the road spray, the salt, the grit tracked up to the door and the hands and sleeves that touch the glass on the way through it.
That changes the answer to the frequency question. A seasonal clean works on upper-floor office glass. On a storefront heading into the wet months and the busiest trading weeks of the year, it doesn’t.
Does rain undo a window clean?
Not on its own. Clean rainwater carries very little, and glass that was properly cleaned and squeegeed dry will shed it without marking. What leaves a visible film is what the rain picks up on the way: road spray off a wet arterial, de-icing salt in the mist behind passing traffic, and dust running down off a frame or a ledge above the glass.
So a storefront on a busy street looks worse after a week of wet weather than an identical unit on a quiet side street, even though both got the same rain. The frequency should follow the exposure, not the forecast.
What films commercial glass in winter
Most of it comes down to five things:
- Road spray and de-icing salt. Salt mist dries as a haze that catches low winter sun, and it builds through every cold snap rather than washing off between them.
- Hand and sleeve contact at the doors. Entrance glass and door furniture take more contact in winter — gloves, wet sleeves, pushed doors — and it shows at eye level.
- Grit tracked to the threshold. Sand and salt spread on sidewalks ends up splashed across the lower third of the glass.
- Lower light angles. The sun sits low enough in December to rake across the glass sideways, which shows every streak and smear that a high summer sun hid.
- Heating and kitchen exhaust. Vents discharging near glass leave a greasy film that water alone won’t lift, which is why hospitality frontage usually needs a shorter cycle than retail next door.
Setting a frequency by elevation, not by building
The useful approach is to treat each elevation separately rather than quoting the whole property on one cycle.
Ground-floor retail and entrance glass on a trafficked street generally wants fortnightly or monthly service through the winter. Upper-floor office glass on the same building can run on a longer cycle, because it’s above the spray line and nobody touches it. A courtyard or laneway elevation sheltered from traffic usually sits somewhere between the two.
How the glass is reached changes with the elevation as well. Low and mid-rise faces are cleaned with pole-fed pure water from the ground, and high-rise glass a pole can’t reach is cleaned by rope access — our window cleaning page covers both, along with what’s included on every visit.
Commercial window cleaning is priced this way for that reason: entrance and storefront glass on a recurring program, other elevations at whatever interval their exposure justifies. Recurring programs run at a fixed monthly rate rather than a fresh quote each visit, and customers on a recurring schedule get 5% off. Entrance glass, frames and door furniture are cleaned as part of the same stop, not treated as extra work.
Scheduling around trade
December is the month retail frontage matters most and the month it’s hardest to clean during opening hours. Work is scheduled before you open or after you close where displays, queues or foot traffic make daytime cleaning impractical — which also means the glass is right at the start of the trading day rather than at two in the afternoon.
Lead time is worth planning now. Booking the December visits in October or early November gets you the morning slots before they’re taken, and it means the first cold snap doesn’t arrive with nothing in the calendar.
What weather actually stops the work
Three things, and only three:
- Temperatures near or below freezing. Water left on glass or in a track can freeze, and a frozen threshold is a hazard for the people using the door. Cold mornings get pushed later in the day rather than cancelled.
- High wind at height. Pole-fed and rope-access work above the ground floor stops in strong wind for safety. Ground-floor glass carries on.
- Heavy sustained rain. This one is about safe working conditions and visibility, not the finish. Light rain doesn’t affect the result.
Ordinary wet weather isn’t a reason to reschedule. Confirming that up front is worth doing, because a contractor who cancels at the first forecast of rain between November and February will cancel most of the winter.
Pairing it with the entrance
Glass is the part people look at, but the threshold underneath it is the part they stand on. Salt, grit and tracked-in residue stain concrete and pavers over a winter, and an entrance that looks neglected undercuts clean glass directly above it. Commercial pressure washing can be staged around trading hours the same way, and pairing the two into one scheduled stop means one notice and one invoice instead of two.
For property managers running several locations, the scope and documentation stay consistent from one site to the next, with completion photos where applicable. The commercial services overview sets out how that recurring work is coordinated. Our work carries a 100% satisfaction guarantee when the concern is reported within 7 days of completion, and the $5 million liability certificate is provided before anyone is on site.
Send us the address, tell us which elevations you want included and what hours suit the business. We’ll confirm what we need to price it and give you a firm price before any work starts — a straightforward storefront can be scoped from the details, while a multi-storey or rope-access elevation needs a site visit first.