It is a "bubble" window which cant be opened and it sits on the flat roof. I havent managed to venture out on to the roof (its quite high) but I know the roofer was talking about needing to refelt it but i think they did a quick fix with a sealant. (they arent very trustworthy).
We had a flat roof installed as part of a loft extension and it is covered in felt. The builders then cut a hole in the felt to put a flat window in. This is now leaking and they are claimed to have fixed this with a sealant. Will this work or will they need to refelt the roof to ensure it is...