A little mishap happened with our last snow storm. The north facing roof buckled on the greenhouse from the snow. From the photo, you can see that the 4 rafter pieces have all bent in. The rigid foam insulation that I had installed on the inside has also pushed in.
Luckily, when I assembled the greenhouse, I had added some extra bracing inside. This prevented it from totally caving in so its not a total loss. The plants and fish are still alive! This spring, I should be able to dismantle this section and bend the pieces back into shape .and add some additional braces inside.
Heres a link to my blog that displays the original bracing I installed a few years ago. Link to Blog