clean cleaning detergent hand hands housechores sponge washing window bleach chemicals cleaner disinfectant domestic glass home housework ledge products spray steriliser car wash espuma foam soap soapy sud suds wash water wet architecture building city clouds corporate modern office reflexion sky urban windows balcony banner billboard block clear empty flats house action activity appearance at work business cage cleanliness elevating exterior height helper high hoisting platform industry inhabited job lift maintenance men outdoors reflection safety service support tidy tidy up tool wall washer wipe wiper work worker working. commercial attendants brushed brushes carwash cleaners conveyor conveyorized drying equipment fixed cleaning mechanisms high pressure water streams human greeter mechanized mechanized car washes mitters nozzles protectants recycle reuse rinse rollers soaps soft cloth track trickling tunnel entrance tunnel exit tunnel washes vehicle wash stations washing processes waste-water water reuse windscreen wraparounds aloft altitude danger England english exposed exposure Great Britain hanging landmark London risk shard sheer side skyscraper suspended suspension tourist attraction tower UP vulnerable agile angles appearances contemporary contrast contrasting curve curved dangerous dangling distant elements external high-rise light lighting linear lines metal perspectives ropes shadows shapes size sunlight supported supporting supports views window-cleaners workers workmen