You are reading a single comment by @mespilus and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@mespilus
Do you have a small roof above these steps?
Is it waterproofed with lead sheet,
and,
covered in moss?
Just struck me if some of the discolouration is moss-based you might need to use iron sulfate
to kill off moss spores.