Hi,
19th century gritstone end terrace house with stone walls that have been badly cement pointed. Previously gutters were overflowing, the coping stones on the gable wall need repointing and there are a few slipped slates on the roof. So plenty of ways for water to get in. Ground level is only just below internal floor level. Plaster is damp to touch and coming off the walls in places. Also some rot in the floor joists and wall plates.
Recommendations for how to fix it as I have had different recommendations?
6:1:1 sand:lime:cement pointing, dpc and sand+cement internal render to seal it in
or
NHL pointing and lime render internally to let it breathe (more expensive)
I have done a lot of googling (SPAB etc) and it's not clear how much lime is really important or a conservationinst obsession. Pictures and a bit more details at http://leftoutback.blogspot.co.uk/2013/07/damp-mortar-and-indecision.html
Comments / thoughts would be fantastic. Apologies if in wrong category.
19th century gritstone end terrace house with stone walls that have been badly cement pointed. Previously gutters were overflowing, the coping stones on the gable wall need repointing and there are a few slipped slates on the roof. So plenty of ways for water to get in. Ground level is only just below internal floor level. Plaster is damp to touch and coming off the walls in places. Also some rot in the floor joists and wall plates.
Recommendations for how to fix it as I have had different recommendations?
6:1:1 sand:lime:cement pointing, dpc and sand+cement internal render to seal it in
or
NHL pointing and lime render internally to let it breathe (more expensive)
I have done a lot of googling (SPAB etc) and it's not clear how much lime is really important or a conservationinst obsession. Pictures and a bit more details at http://leftoutback.blogspot.co.uk/2013/07/damp-mortar-and-indecision.html
Comments / thoughts would be fantastic. Apologies if in wrong category.