Boast to me is where it sounds hollow compared to the rest of the wall and the plaster has started in 1 part to actually fall off- about 2 cm. What are the remedies?
We have a detached house built in 2005. The brace wall in on the outside of the house. On a wall upstairs where the chimney would be has become boast in 2 spots each about 10cm in diameter. Someone has diagnosed that we have dirty wall ties, someone else has said that we need to put a cap on the...