ripping off wall coverings to replace with insulated plaster board

[what..the?]

ok so I am looking into buying this old house solid stone it has some damp issue which mean new roof, some damp proofing round but inside the walls have no wall insulation so the interior side of the exterior walls need ripping back down to the origional stone and then haveing plaster board with insulation built in re applied and the replaster /skimmed on the outside ready to decorate.

a) I would like to find out more information online about this process are there any good diy websites that do step by step guides my plan is to get someone in to do the work but I want to research it myself first

b) I have a standard not an over large 3-4 bed detached house if I was to replace all the inside of the exterior walls as said are we talking hundreds or thousands of pounds for this kind of work and how long would it take to do say one standard room?

Thanks in advance, any help would be great

[The Builder]

What's done a lot these days Whattie .............. especially in barn conversions to bring them up to modern insulation levels ............ is to stand timber stud walls a clear cavity's width from the inside of each exterior wall. The stud is filled with insulation .......... usually board or "Superquilt". There's a vapour check on BOTH sides of the stud. If possible, the cavity could be ventilated.
Electric and plumbing runs can be within the stud. It's then covered with plasterboard and skimmed.

[The Builder]

Disadvantage is ................. old curvy walls are lost, and the result is rather like a box within a box! It really rather depends on how "interesting" the inner walls of the house are to begin with.
It's a pragmatic approach rather than an aesthetic one, but if attention is paid to the character and features of the remaining walls ............... then it's a good compromise. I'm assuming the house isn't Listed, architecturally "of special interest".

[what..the?]

thank you so much for that, no the house is not listed or of special interest.

Thank you for your ideas, we wouldnt be losing any feture walls there are just fireplaces in two rooms one which stands out from the wall so ok and the second we could always step out I suppose.

I have heard about the system of insulating and plastering a wall of this old style traps in damp and does not allow the natural stone wall to breath. I have heard of this when researching natural stone walls. However there is already a render on the outside and i beleive basic plaster inside. There is already damp issues in the wall as a result of roof damage, no damp proofing - which are both being fixed. So it is questionable if replastering too extremely is going to drap damp in. is your method better for letting the wall breath? and what depth are we talking about losing within the room because of the stud walls?