We have two sets of bi-folding doors and they were met to be fitted before Christmas. The first set were installed fine. The second set unfortunately had been mis-measured and were 300mm too big. There was no alternative, they needed to be re-made. The mistake (fortunately) was down to the supplier and after a brief discussion they agreed to re-make the doors at their cost.
The re-made doors were installed (very successfully) today. It only took a couple of hours and we are really impressed with the results. The front elevation of the new extension certainly looks a lot better!

Here’s the opening in the master bedroom before the bifolding doors are installed. Ignore the fact that the back garden looks like a building site – the views are great.