11/08/2026
The fire escape stairs don't clean themselves.
Part of last week's external works: the metal staircase running down the back of a London building. Open treads, permanently outside, and grime building up on every step.
It's the one route in a building that has to work on the worst day. It's also usually the last surface anyone thinks to put on a cleaning schedule, because nobody uses it from one year to the next.
Wet checker plate with algae on it is slippery. In an evacuation, people come down those steps quickly, and not all of them are steady on their feet.
Jet washed back to bare metal, it grips again.
Worth checking yours. It costs very little to clean, and it isn't something you want to find out about afterwards.