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I’ll be internally insulating one solid brick wall but it’s south facing on the 6th floor and is covered in tiles with no rising damp.
I’ll be very surprised if there are any damp issues caused by this insulation method but if the property was the usual Victorian construction then a different approach would be needed.
Mr_Smyth
Are people just insulating inside solid brick houses directly on to the walls?
An architect friend reckons lots of people are and that without first creating a ventilated cavity they are going to cause mega problems in ~10 years. Brick is porous if not permeable, depending on orientation and sun exposure it usually only dries fully once every four years or so, significantly aided by the heat from inside the house. Once insulated that internal heat won’t help the drying process much and eventually the brick will be damp right through, but you won’t know because it’s covered internally by insulation. The damp will just slowly fester behind the insulation getting worse and worse until eventually signs will appear internally but by that time the wall behind will be a gopping bio hazard and will require significant repair.