Small area of damp at the bottom corner of a patio door. I can't see any obvious route of ingress,any ideas please?
Is there a drainage hole in the bottom track. There looks to be some muck in there, so any hole may be blocked, allowing water to build up and overflow inside.
@el_presidente started
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.
Small area of damp at the bottom corner of a patio door. I can't see any obvious route of ingress,any ideas please?