Our walls are growing mould - Telegraph

Our walls are growing mould - Telegraph

Q We live in a very old house, dated 1748. We have just had extensive work done on the front, as the wall was moving outwards. We had the external render taken off and part of the wall rebuilt with the original handmade bricks. It was then pointed up on the outside and on the inside, it was coated with a lime render, and then a gypsum finishing coat put on top of the lime. We also had an electric damp-proof course put into the wall. Two weeks after the wall had been plastered, it started to grow a fluffy white mould and the surface of the plaster started to flake away. I understand this to be called efflorescence, and it is caused by salts. Please could you tell me if it will ever stop coming through; if there is a cure for it; and if anything has been done wrong in the process? The wall does not appear to be damp at all.

A .....