Following concerns over the recommendations for insulating the interior stone walls of our house we had a thermal study carried out which suggested we should not be using racking and plasterboard with fibre glass but should be using an 8cm hemp and lime (chaux chanvre) insulating plaster. Followed by a breathable paint.
I've read so much about this and gone backwards and forwards so many times - some say using plasterboard is just asking for trouble with condensation and mould building up over time causing long term problems and others say this isn't always the case. I've attached the note from the thermal study.
Anyone got any experience of using hemp and lime plaster? I know it's almost double the price of putting in the racking and plasterboard with 10cm fibreglass and I've been told to expect a rustic finish.
I'm not expecting to get that totally smooth plasterboard finish but can you achieve an almost fine finish with a lime plaster? I'm pretty sure I've seen this in the UK.