The house we are renovating is over 100 years old, covers 4 stories high including a semi-sunken basement that lacks a damp-proof course or DPC. The level of the basement is below ground level, most of the sides are dug out, still there are areas that are underground and it’s significantly below ground level so rising damp and penetrative damp is a problem.
We stripped the walls to the original red brick that (other than an extension from the late 80s I believe) is over 100 years old and so obviously lacks a plastic damp proof membrane you find on newer builds. With the walls stripped to the brick work we found a lot of damp (especially in the corners)!
