The theatre room already has one door included, I just want to change it to double doors. I'm not even sure why I want double doors, I just do!! For looks I think! I just don't understand how adding one extra door can make so much diffrence?
I guess if it does change the energy rating I'll just get them to do the door frame and I'll install the doors after handover, as suggested
Hello NatB
You proposed changes could very well change the energy rating, but it depends on a number of factors which includes your climate and change should be very minor and shouldn't bring the actual star rating down, however without modeling the house I cannot be sure. The software assumes that a person will do the right thing and open doors and windows at the appropriate times.
ps. I am an energy rater.