"The Natural Philosopher" wrote in message
...
Christian McArdle wrote:

With 6 inch joists, you are laughing. If you can afford celotex, just
use
the complete thickness and board over if you wish.


You should not do that - the regs insist on an airgap to allow air to
circulate over the joitsts etc.


How can you have a floor, if you must leave an air gap between the
joists
and the boards?

Can I presume you thought I was still talking about insulating the roof,
not
the floor?



Yes. Sorry.


Christian.







Thanks for all replies. I fancy using Celotex as I also need to do some
angled sections which won't be the easiest to get into. Might try and take a
couple of photos at the weekend to give people a better idea of what I'm
after, but the replies so far are what I was after!

Leigh