The door needed trimming after a wooden floor had been fitted, making the floor higher. It is a fire door, i.e. solid wood about 4.5cm thick, and therefore expensive. The decorator has trimmed it way too much, so there is now a gap of 11-12mm under the door. This is obviously going to be draughty, and will also probably make the door less fireproof. Should I ask him to buy a new one? He’s obviously not going to want to. I’m so annoyed.