Maybe I’ll just man up and take it all down, there isn’t loads I just can’t be bothered but I get your point. And it doesn’t make any sense to be there.
Maybe just some kingspan / other PIR instead - you can install it between the rafters with a gap between it and the sarking, allowing air flow from the soffit / eaves.
Maybe I’ll just man up and take it all down, there isn’t loads I just can’t be bothered but I get your point. And it doesn’t make any sense to be there.