Damp Proofing

Mould under bay window in Victorian conversion - wall was apparently injected with chemical damp proofing

Anonymous user 28/02/2024 - 3.03 PM

We have recently carried out some work in a Victorian conversion. We had some damp proofing done around the flat. Under the sitting room bay window, the wall was apparently injected with chemical damp proofing from the outside ( I can't see any holes where this was done, should I?). Around the same time, the same wall internally was rebuilt where an old floor to ceiling wooden frame was removed from the bay window (when frame was removed, the builder had to render the walls then add plasterboard and plaster). We've just finished decorating, and now mould and damp patches have appeared under the bay window. Not sure whether this is an issue for the damp proofers, the builder who did the internal work, or a whole new problem!! Any advice would be greatly appreciated….Thank you.