Insulating plaster and lath walls
There must be a non-destructive way to reduce these current heat loss. To my mind the unknowns are the extent and effectiveness of this air movement and the risk of extranious drafts, from around the sash window frames for example. I'd guess that with the heat differences in the house a draft would be set up down the gap taking the cooler bedroom air back down to the warmer living room etc.
![insulating plaster and lath walls insulating plaster and lath walls](https://1stassociated.co.uk/articles/article_images/traditional-lath-plaster-ceilings_clip_image013.jpg)
The idea being that these would allow sufficient air circulation to keep the wall etc dry but keep, most of, the heat in the house. That is to say add vents at floor level on the ground floor and ceiling level on the upper floor. How about blocking the gap top and bottom but adding vents into the house. It basically the block the gap but with a twist. I'd appreciate the groups thoughs on one idea that has been suggested. Line the walls on the inside - would require the removal of the cornices
![insulating plaster and lath walls insulating plaster and lath walls](https://i.pinimg.com/originals/f1/86/e7/f186e7de8b3884cb12f44ae72f1e1c23.jpg)
Seal the top/bottom of the gap - potential of damp problem and or rot Replace the lath and plaster with modern insulation - would destroy to many original features of the house. The question is how best to reduce that heat loss. I'm guessing that an air flow is essential to prevent damp since it is a solid stone outer wall. I've lagged the loft with about 10" of glass wool but have hesitated to cover the top of that gap. In the loft I can feel a distinct warm airflow coming out of that gap at the top of the wall which must represent a very significant heat loss. The outside walls have lath and plaster cladding on the insides with the usual gap between the laths and the stonework.
![insulating plaster and lath walls insulating plaster and lath walls](https://i.ytimg.com/vi/PEu9gYLL954/maxresdefault.jpg)
I've been squatting on this forum for a while in the hopes that someone might cover the issue I have with an Edwardian house but no one has so here goes:Īs I say, I live in an Edwardian house which is stone built.