Such as the gaping hole in our roof, which is hopefully venting any errant Radon...
Being significantly heavier than air, radon will vent downwards.
@jvhp 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.
Such as the gaping hole in our roof, which is hopefully venting any errant Radon...