I have a house similar to the image below.
The apex roof space and the top of the flat sections is all as one. i.e. the same air flows in both and I can put my hand between the plasterboard ceiling and flat roof top(from the loft).
I will be replacing the felt covering on the flat sections in the summer. However, I would really like some advice on insulating the flat roof. There is basically no ventilation in the roof space at all(so I need to provide ventilation as well, because it gets all damp from condensation(unsurprisingly))
I don't want to remove either the ceiling plasterboard or the wood top of the flat sections. To make matters worse currently there is 25mm glass fibre insulation stapled to the underside of the wooden flat roof along with various batons going across the top side of the plasterboard between the joists. Making it very difficult to stuff any insulating product down the gap properly.(Believe me I've tried)
I'm getting cavity wall insulation installed shortly to the house by EAGA, but they didn't have any suggestions on how to insulate the flat roof.(Apart from saying make the roof pitched). If making the flat roof section pitched and using ordinary wool insulation was the cheapest option I would go with that, but I suspect it isn't. Also I think it would look rubbish unless I could get my neighbour to do it as well. Also, things like Super Quilt or foam board are bloody expensive and will be very hard to install correctly.
Suggesting an inverted roof, isn't any help either as my cold roof construction is part of my apex roof(i.e. my loft)
So I'm looking for some inspiration.
The apex roof space and the top of the flat sections is all as one. i.e. the same air flows in both and I can put my hand between the plasterboard ceiling and flat roof top(from the loft).
I will be replacing the felt covering on the flat sections in the summer. However, I would really like some advice on insulating the flat roof. There is basically no ventilation in the roof space at all(so I need to provide ventilation as well, because it gets all damp from condensation(unsurprisingly))
I don't want to remove either the ceiling plasterboard or the wood top of the flat sections. To make matters worse currently there is 25mm glass fibre insulation stapled to the underside of the wooden flat roof along with various batons going across the top side of the plasterboard between the joists. Making it very difficult to stuff any insulating product down the gap properly.(Believe me I've tried)
I'm getting cavity wall insulation installed shortly to the house by EAGA, but they didn't have any suggestions on how to insulate the flat roof.(Apart from saying make the roof pitched). If making the flat roof section pitched and using ordinary wool insulation was the cheapest option I would go with that, but I suspect it isn't. Also I think it would look rubbish unless I could get my neighbour to do it as well. Also, things like Super Quilt or foam board are bloody expensive and will be very hard to install correctly.
Suggesting an inverted roof, isn't any help either as my cold roof construction is part of my apex roof(i.e. my loft)
So I'm looking for some inspiration.