I own a 1970s house and the windows in most rooms are big box windows. The windows are brown wood effect uPVC. A couple of the windows have blown but nothing that can't be fixed. The house needs a lot of work and replacing windows is very low on the priority list. We have a porch on the side of the kitchen with plastic roof which leaks and wood framed windows which are totally rotten. Obviously we need to fix this. The cheapest way would be to replace the plastic roof and put in uPVC windows. But I'm not sure if I'll regret not going for wood. Any advice?