It's a while[1] since I've played with twinwall and I want to make an
awning-style roof over the patio, to keep the rain off. It'll be about 3m
deep (from the house wall to the outer edge) and about 3m5 wide. I'm
planning to make a frame of treated CLS-ish timber with spars at suitable
centres to take the sheeting. Last time did anything like this I used 6mm
twinwall but it was a bit floppy and wimpy-feeling[2]. What's a sensible
thickness to go for, for reasonable width of sheets? Any recommendations
on fixing systems (glazing bars etc)? And heads-ups (or downs!) on
suppliers? Any other gotchas?

tia


[1] measured in decades

[2] though it did just about survive a brick falling onto it from about
10' above - the brick made a big dent in the sheet but didn't go through
(and I don't recall if it broke either skin)

--
John Stumbles

I used to be indecisive but now I'm not so sure