Hi All, Our 1900ish house had the kitchen extended into the old coal house (according to the survey) many many years ago. That part of the kitchen only has a single skin of bricks on the outside with an air brick and on the inside a timber stud wall with some sort of plasterboard. It gets cold in there! The kitchen is quite nice and done so I would like to avoid ripping it out to put in any insulation. Are there any other options, e.g. take out a brick and throw in loose fill insulation? Cut out plasterboard sections and shove rockwool in and then make good? Any advice would be great. Is the air brick needed? Would installing installation lead to damp problems from the single skin wall? Thanks