My back door, which is double glazed but probably fairly ancient, has slipped on its hinges and now the door locks but not quite properly. There's a draught now that wasn't there before because there's a small gap where it's not quite flush now.
How do I go about buying a new one? Do I go to B&Q or get a local glazing company in? How do I find a company that won't rip me off? I'm in the Cardiff area. Any ideas how much a replacement would be?
Thanks!