We are doing a bit on the house, inclubing getting a big patio door at the back. Can anyone advise me as to what should I look for, what frames, what not to get etc. I have seen a NorDan door which looked really efficient - v weather proof, low U value, safe etc, but they are expensive and the door is large at approx 3.2m wide, 2.2m high. I haven't looked at anything else yet and am bothered that I don't know what questions to ask.
Help!!!