Hi All, hope you can help. I have recently brought an old small victorian terrace property but have a big problem with damp !
My neighbour has a path running the full length of the house gable aprox 4ft above my ground floor level. The previous owner had the lower half of the ground floor wall cement rendered but there is still a problem. I asked a damp expert to look at the problem and he suggested to take the internal wall back to brick then tank slurry then render and plasterboard all the walls that runs again the neighbours path upto the first floor. I thought this quite extreme, also due to increase in water content of wall will this effect the outside render which starts 12" above the neighbours path. I also asked how will the wall breath, no answer apart from him saying it will not be a problem.
Would it be best to ask the neighbour to dig a trench so there is an air gap on my external wall (difficult as path is narrow), or would using a lime render with plaster skim on the internal wall suffice. Any suggestions would be gratefully received.
Please also see sketch attached, cheers.