- Joined
- 7 Oct 2019
- Messages
- 12
- Reaction score
- 0
- Country
I’m looking for informed opinions on a flat roof extension that I’m having done at the moment. The builder comes recommended and I believe has many years experience.
However I’m not sure the flat roof construction looks properly thought out to me. I’ve looked at many specs and discussions about warm flat roof design.
I’m not happy with how the roof has gone on at the moment. So I don’t want the roofer to come and felt it yet as i think it needs to be redone.
AFAIK standard construction for a warm flat roof is:
> waterproof covering
> osb deck
> insulation
> vapour control
> plywood sub deck
We’ve got:
> waterproof covering
> osb deck
> insulation
The insulation has been screwed through which isn’t ideal and there is no vapour barrier or sub-deck. So it seems poorly constructed.
Am I being overly concerned or can we just put up some foil backed boards?