Strangely enought, I've just had my conservatory roof re-done. The only reason for this was that the wooden beams had rotted. The builders replaced all the polycarbonate sheets and aluminium mounting bars too, so TEN 4 mtr x 1 mtr perfectly useable sheets and mounting bars went away with them. I just wonder if they sold them on as they are quite expensive to buy new.

Maybe you have some kind of builders reclaimation yards in the USA like we have here in the UK? you could try one of those or maybe give eBay a try?

thank you