Misted up or broken glass panels
Glass panels can become misted up or broken due to age, but they can easily be replaced by the original supplier. However, take care not to just treat the symptoms without investigating the cause: an unseen problem could be at the root. Standing water can break down the seals over time so check that the drainage slots are not blocked and preventing water from flowing out of the plastic frame. Also, check that the end-caps on the outermost point of the rafter sections of the roof are completely clean. If there’s a build-up of dirt, the end-caps can become loose and fall off, allowing panels (especially polycarbonate ones) to move and cause leaks.