Mine only lasted 2 years unfortunately - It was in a sheltered position, but the wind still managed to rip it down. This was not so much of a problem with the cover, but after a while the sun degrades the plastic joints & they ended up cracking & no amount of superglue could keep it intact. In hindsight I should have trenched in the sides of the greenhouse so it couldn't get blown about ( guy ropes are ok but not much use in the middle of winter). On the plus side, it was great in good weather - toms, cucumbers, hardening off etc & good for overwintering tender perennials - but not in severe frosts. Currently using the left over debris as beanpoles & a mini cloche, so not a total waste!!