Hi All, I hope this is OK to ask her since I would like to get input from people in the Industry! We have a room built on top of a garage conversion whose longest exterior wall (Solid & NNE Facing) is very thin - only about 100mm or one brick thick with no insulation so it is a massive source of energy loss. The room is width limiting & due to boundary issues, it is not possible to apply external insulation. We aim to therefore have installed 62.5mm PIR Insulated Plasterboards via the Dot/Dab method (to save space by not battening). The wall dimensions are Length 4.9m x Height is 1.95m. Can anyone please kindly advise me on what sort of total cost/quote I can expect to have a tradesman install the insulation please? It would mean: 1) Removing The Skirting 2) Applying The Plasterboard Insulation & Properly Sealing 3) Plaster Skimming For A Smooth Wall Finish 4) Re-attaching the Skirting. 5) Anything Else The Process Might Usually Require A possible future issue that has come to mind is that the room currently has laminate flooring so I presume the insulation will be installed on top - is that correct? If so this would make it very difficult to change the flooring in future to another type so would like to ask, what would be the best way to mitigate against this when installing the insulation to allow future changes of the room floor easily? I have attached an overhead sketch of the room for visual reference to help aid further & would be deeply grateful for any help/advice & input! Many Thanks!