Help!- is this a COLD or WARM roof?

2 Oct 2012
Reaction score
United Kingdom
help please - is this roof structure a cold or warm roof?

3 layers felt on 80 Celotex on 12 ply decking on firrings at 1:60
unventilated air gap
TLX Rafter Fit
150 rafters at 400 crs
unventilated air gap
12.5 plasterboard and skim

Sponsored Links
Thanks for the answer.
I see... Warm roof therefore the unventilated air gaps?

Why I got confused was when I took out a downlight from the ceiling, there was celotex all round the ceiling space - so if it's a warm roof there should not be any celotex there right?

Thanks again
Sponsored Links
Not necessarily, it depends how it was built. Some roofs are hybrids, many older roofs that have had the insulation upgraded are hybrids.

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local