Also, is it going to have a roof or gutter which will overhang the wall?
Not if they go for a box gutter.
I imagine it'll be like it is now, with the fall to front and back not to the side. If it does fall to my side however, I'll collect the rainwater.
@ChasnotRobert 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.
Also, is it going to have a roof or gutter which will overhang the wall?