Anyone else heard of damp problems following cavity wall insulation?
We have lived in the same house for 20 years. Around 2 years ago we had the walls done and since then we've noticed water running down the walls and the ceiling and wall corners have gradually got black mould spots/peeling...
Has anyone come across ceilings for a 1933 house that looks like it is made from a 'cardboard and tar' sandwich.
Both faces look like 'brown cardboard'? and through-out the thickness there are what looks like 'black tar' layers?
Any one with any ideas what this is? Is it asbestos??? can it be...