Chris wrote:
Where can I get Correx?

I want to make a cold frame to grow vegetables through the winter.
Correx seems to be the best glazing material.
Do you agree?

I've never seen it on sale.
Do you know where it can be obtained?

Also - any design ideas would be welcomed.

I did a quick Google search on correx and found, among others:
http://www.mugi.co.uk/bgwhite/wherecorrex.htm

Searching on twinwall, results included:
http://www.diyplastics.com/twinwallpricelist.htm

No idea if these are up to date, but you'll know better what you're
looking for than I do anyhow.

I wonder if some of the DIY sheds may be able to help.

Mike.