The original door we were going to use for our side door is a bit knackered and my builder has said he would have to charge me £450 to refurbish it and I might as well get a new one. Although it's Sapele and nice and heavy and had a nice Banham lock, it has a rubbish U value and the wood may have rotted in one part, so I think he's right.
Can anyone recommend an external door with a fairly good U value and preferably PAS24 or similar rated. Really doesn't need to be passive standards, just something in the 1.1 region that is fairly airtight. I don't care what it looks like, but it needs to be secure and open outwards. No glazed panels to keep it cheap.
I probably also need a door frame.