Quick answer: Shopfront glass needs cleaning weekly (high street), fortnightly (office frontage) — it's the first quality signal customers read, and traffic film plus hand prints rebuild in days. Do it before opening hours, two-stage (degrease, then residue-free), and know the rules: working from a ladder on a public pavement brings Work at Height obligations and public-liability exposure, which is why most SMBs either pay a commercial round or keep the work at ground level. Large fixed panes are also exactly what suction robots automate well — including the glass above door height that nobody's ladder should be on.
Retail has a saying older than retail parks: customers clean their shoes on a doormat and their expectations on your windows. Smeared shopfront glass reads as "tired business" from across the street — before your signage, your stock or your smile get any say.
The frequency the high street actually needs
Street-facing commercial glass lives in the worst microclimate in glazing: pedestrian hand prints, bus and delivery traffic film, rain splash from the pavement, and door-height smudge from every entry. Weekly is the working minimum for a customer-facing frontage; food businesses and anywhere with display windows tend to need a mid-week touch-up on the entrance glass too. Offices off the street stretch to fortnightly outside, monthly inside.
The method (fast, before opening)
Two-stage, same as any roadside glass: warm water with a touch of detergent to break the oily film, then a vinegar or pure-water pass so no residue is left to grab the next bus's exhaust. Squeegee top-down in lanes, detail the edges, dry the frame line where drips collect. A practised person does a typical shopfront in 20 minutes; the pre-opening slot matters because wet pavement plus customers is a slip claim waiting for a date.
The rules bit (short and worth knowing)
Ladder work on a public pavement puts you under the Work at Height Regulations, and any incident involving a passer-by lands on your public liability policy. That's not a reason to panic — it's the reason the trade does what it does: water-fed poles from the ground, early hours, cones if anything's wet. If your frontage has glass above easy reach, either hire a round that carries its own insurance, or keep the work at ground level with poles — or put a machine on the glass instead of a person up a ladder. (The ladder statistics are sobering reading for an employer.)
Round vs DIY vs robot: the SMB maths
Commercial round: reliable and insured; typical UK shopfront rounds price per visit, and weekly service adds up across a year — the cost benchmarks are here.
Staff DIY: cheap until you cost the time, the consistency and the above-reach glass honestly.
Robot: big fixed commercial panes are the best-case surface for a suction robot — flat, framed, uninterrupted. A CleanBot R1 covers a display window unattended before opening while staff set up, handles transom glass above door height without anyone leaving the floor, and does the office's internal partitions too. For a frontage cleaned weekly, it typically undercuts a year of rounds by a wide margin — and it never calls in sick on a Monday.
FAQ
Inside faces too?
Monthly minimum — display lighting shows internal haze badly, and glass doors collect staff-side prints just as fast. Internal glass partitions in offices: same schedule, same robot.
What about graffiti or etched vandalism?
Paint: solvent and patience, soon — the longer it cures the harder it fights. Scratched or acid-etched glass: that's a glazier or a sacrificial-film conversation, not a cleaning one.
Is window cleaning a deductible business expense?
Cleaning and maintenance of business premises is a normal allowable expense — equipment may be treated as a capital purchase. Your accountant confirms the details; the receipt filing is on you either way.
Your windows are advertising you every hour you're open — and every hour you're shut. Keep them saying the right thing: the CleanBot R1 makes spotless the default, not the Friday panic.