Solid Stone Wall Insulation

justmyself

I am about to start a full refurb on a Solid Stone Wall Town House from around 1850's. Heating, Electrics, Plumbing, Insulation, New Windows, doors etc... the works.

All advice read around the web is I need to be careful insulating this type of house. As solid stone walls need to breath.

From what I understand, a typical incorrect insulation is using insulated plasterboard internally. With nowhere to go, moisture reaches its dew point on the impermeable material, creating damp patches on the wall.

I can't cover the outside because of aesthetics. Anyway, covering the outside with non-permeable render can prevent internal moisture from escaping, again creating internal damp.

So basically I need to be careful what materials I use to make sure the evaporation will keep dampness levels in the building fabric below the levels at which decay can start to develop. Basically creating a 'breathing building'.

My basic understanding is I can't use run of the mill cavity wall insulation? But surely with all the advances of late there must be a Insulated Plasterboard & process I could use?

Can anyone suggest what approach i should take?

Thank you so much for your advice & help. Truly gratefully appreciated.





Here's a photo of the walls. It's an old house in need of a full refub, but there's no damp. It's good & solid. It's has big thick stone walls: 50-60cm. Currently has no ventilation, i plan to drill vent holes in each room (or the fact that chimneys are in each room, would that suffice?).

delly

Hi OP. Please try to stick to the one thread in the one forum please.