wrote:
On 23 Mar, 11:54, Stuart Noble
wrote:

Or this stuff maybe?

http://www.polycool.co.uk/benefits.html

This looks very interesting. Does anyone have any experience of using
it?

James


It's probably overpriced from the above company. I would think whoever
supplies polycarbonate sheet in your area might be a better bet. I think
they're called "solar inserts". This is another source
http://www.casupply.co.uk/acatalog/s...l_inserts.html