right to cut long story short dad is on life support and hopefully he will come home but been warned that might need care basically as you can see from pics the outside room which use to be a shed in connected to house my plan is to turn it in to a bedroom but removing door which has a lintel above it and replace it with a double glazed window but my biggest concern is obv building regs and is only has single brick wall on that out building but the question is what insulation do I have to put in ? also in garden im having conservatory put up againt that wall which currently has the doors in so I guess that part of the wall wont need so much insulating is that right ???