Interesting approach- very different than how one might do it where I live in the US. What do you do to prevent rodent intrusion through the holes you've drilled?
Seriously?. Cavity ventilation requires much more than drilling a few small holes in the bottom frame. Any water that permeates through the outer cladding will pool on the framing, and for ventilation to work, it has to be open top and bottom. You could always design the shed correctly so as to allow a 25mm ventilation void and leave the top and bottom open.
Are you okay George? Do you understand that this advice is for retro fitting? It’s not a method if you’re starting from scratch. You could always do your own video and not be so snidey on other people’s.
