Ducting height?

[Robbo60]

The 40mm flexi pipe I used is ok for fixed Mitre & Table saw, but a bit stiff for hand tools. Anyone recommend a nice flexible 40mm one please

 

[Lard]

I did it. £800 in total. I hated doing it but it’s structural too so has strengthened the concrete fibre roof. I’ve got foil too for radiant heat - loft is vented . I’m tending to not look for issues (la la la) but I don’t think there are condensation issues.

Thanks for info. I didn’t realise you could buy a kit/do it yourself. Mind you I’m too tight to spend that much although, having said that, I can appreciate the benefits of what you get. I thought you had a metal profiled roof (as do I) which is why I queried the condensation as I’m looking to repurpose our garage.