Asiapinball
Site Supporter
David I would really recommend getting the outside wall insulated at the same time. At 2.74m width you will bring it down to 2.64m so plenty of room to get the glass off and all you will be paying for is 4 panels of insulated plasterboard and half a days labour plus a small amount for reconfiguring electrics on that wall. I can't see it being much more than 500 extra and the room will really benefit particularly if it is a single skin external wall as I suspect it is.