I want timber sash windows in my new build. If my windows are going to be made by a local joiner, who is going to use DG units with a U-value of 1.1, how do I get the Uw value of the whole windows?
Does each window have to reach 1.6 or 1.4 Uw to comply with Build Regs?
I am a little confused because this guy makes beautiful windows, but does compliance with Building Regs mean I must go to one of the big manufacturers?
Another confusing thing is PAS24. All of the windows will be lockable and have restrictors, and each lower sash will have toughened glass. Once again does this mean I am pushed to the big suppliers? If so, it is very upsetting that my local guy will miss out!