I am converting a barn which has 500mm+ thick wall and an exisiting concrete floor. The floor has to be taken up and re-laid with insulation & DPM. I understand that the DPM will "keep" water from rising through the slab but how do I fit this into the exisitng stone walls?.
The outside ground layer is 200-300mm lower than the top of the existing slab, so do I just chase out a grove and fit the DPM into it?. At what height above the slab do I do this?.
Doesn't sound right but I can't think what else I can do.
I dont think you can,as if the wall is solid, unless you get the DPM right the way through you will not achieve anything.
What materials are the walls built of,and how old is the barn?
On a brick built solid wall you could damp roof render up to meter high,as damp will only rise about 2'3" above its entry point.
I have a similar situation, on a stone built barn, not in this country, and have used a lime based render/plaster, as this lets the walls breath, and haven't noticed any major problems.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!
