Internal wall insulation in flat

[rflynn]

Hi folks

Any help/advice is much appreciated

I am currently in the process of buying a leasehold Edwardian terrace Flat conversion in London.

Naturally I want to make the property as efficient as possible and I am currently looking into internal wall insulation. The property is of solid brick conversion

The issue is the outside of the property (owned and the responsibility of the freeholder) appears to have a terylene render. Internally the walls appear to have modern cement plaster as well

My question is do I go for vapour permeable insulation materials or as everything in place already is not as permeable do I continue in the same pattern. As it is leasehold I can't remove the external resin and I worry by using vapour permeable materials on the internal side it's going lead to moisture being trapped behind the cement resin

Thanks for any help

 

[Deluks]

Just use insulated plasterboard, and be diligent about ventilation.