Polycarbonate greenhouse.

Tattie Heid

Has anyone any experience of the Palram polycarbonate greenhouses, I am referring to the clear sheeted rather than the twinwall. Do the sheets remain clear or do they discolour quite quickly? Any comments/opinions would be welcome.

Fairygirl

I only have the twin walled kind. They get a bit opaque, but it doesn't really matter to me. 
Plants don't mind either