The build

Well that’s a couple I never want to go for a pint with   . Luckily we don’t have to do any of that. We just have to fit a radon barrier under our floor slab. Basically plastic sheet .

I always thought it required a physical barrier, but there was no mention of it in the clip.

Just the same as an underfloor damp proof membrane which is general practice then, doing two jobs at once!