nearly there but no piccies yet I just wanted to say that insulating the roof with rock wool is going on my list of jobs I never want to do again 
After crawling around in my roof space I would have to agree. it was 50C + in there when I was insulating with rockwool 
Graham,
We need the heat in.......... You need the heat out. 
Opposite sides of the world...... Opposite problems. 
If only we could set up some sort of heat exchanger system...... 
David.
What we need is a world wide pipe line for hot air. We could kill 2 birds with one stone.
1. warm the colder parts of the world thereby cooling the hotter parts of the world.
2. Have a ready made place to throw politicians. They are nothing but hot air anyway.
The distance might be a killa,
The cost might be a killa,
But, getting rid of the lieing, cheating thieving politicians,
PRICELESS!

That is how I see it anyway.
Cheers

Don