Hi all, I live in an old South Wales terrace with solid walls, which I'm looking to insulate. The wall is currently rendered internally with around 25mm of sand and cement which I'll take off. I understand it's a good idea to keep these walls breathable, and so I'm considering using a breathable, insulated render, such as Bauwer Light, to do the job. Does anyone here have much experience using these? Thanks a lot!