Cavity wall insulation on tile hung wooden frame upstairs

9 Oct 2010
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United Kingdom
Was wondering if cavity wall insulation is an option in my house? Upstairs is wooden framed built on a brick built ground floor. The upstairs walls are lath and plaster with the external walls closed boarded and then tile hung. There is a good cavity between the lath and plaster and the closed boarding but wondering if I go with cavity insulation will I have a moisture problem and it will affect the the lathe and plaster? Need a solution as currently is much colder up there.

Any help much appreciated or other suggestions???

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Not a builder by trade so any opinion I give would need to be checked out with someone qualified.
How difficult would it be to remove the exterior cladding?
If not too dificult then I would consider fibreglass matting but I think you would also need to insert a damp-proof membrane to avoid condensation.
just an idea.
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I have checked and unfortunately the walls are not insulated just a very windy cavity. Main concern is whether or not teh breach of teh cavity from teh insulation will cause damp on teh back of teh lathe and plaster walls as there will be no vapuir barrier. Does anyone know if there are any types of cavity wall insulation that can prevent the ingress of mosture.

Unfortunately removing the cladding is not an option as would mean removing all of the tiling on the outside.

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