Posted: 20/02/2014 at 15:55
Many of the more reputable (and thus probably more expensive but also decent quality) tunnel suppliers do sell replacement covers. However, any decent tunnel should last more than 2 years - unless you live in a particularly windy place, or a stony one where getting a reasonably tight fit over the frame is a problem.
Some of them sell 'patches' which go over the joints of the frame where the metal might get hot and stretch the cover and weaken it, and so on, the better the tunnel manufacturer the more likely you are to get useful bits and replacements where needed.
Enjoy it, I'd love one, but have nowhere to put it - think the council might object if I put it on the pavement outside!!!!