This workshop was built by me maybe 17 years ago, It was constructed using trench blocks. Their is no damp coarse in the blocks. There is no guttering on the back of it. The back wall is rendered on the outside.
I want to make it a bit more machine friendly and help keep the rust monster at bay.
Everywhere is dry, but the back wall gets damp. Obviously I need some guttering.
I'm about to start laying the wadkin flooring I got a few years ago. They are pine end grain blocks which I intend to lay the old way in bitumen.
Would it help reduce dampness if i painted the bottom portion of wall with bitumen. I was contemplating putting bead & but panelling around the bottom half, but I thought it might compound the damp issue by restricting air.
Any thoughts greatly appreciated