This was my preferred option but am not sure whether it would work with 450mm joist spacing as the 3m sheets that I have seen at B&Q, Wickes etc are all 700mm. There isn't a Mr Plastic in my area.
There are wedges on top of the joists but with only a slight drop (35mm over 3m) so is it...
Hi all and thanks in advance for your advice.
My garage currently has a flat felt roof that is completely knackered (more holes than felt), so I am looking to replace it. I have to decide what option is best out of the following:-
1. Twinwall sheets
2. Corrugated plastic (clear or...