Should I use Lime Render or cement mortar
Damp Walls? Dont wrap your old walls in cling film
Many older solid wall houses can be damaged by cement renders and thick textured plastic coating.
In terms of vapour exchange, coating houses with plastic-type paints or concrete renders, can in a couple of days change the walls into a kind of plastic-wrapped house, solid walls need to breathe, that’s how they were built
A good quality lime render will allow walls to breathe. Renders made with lime are much less prone to cracking than cement renders.
Lime render also looks more in keeping with period houses. A good quality lime render can last for many decades Choosing the correct material for lime renders, such as the base coat strength, type of lime and the sand can be a complicated business depending on the wall type it may be better to specify a 15-20mm thick 3 coat NHL 3.5 render, with nylon mesh reinforcement.
Arrange for an expert survey with All4Walls and get proper advice