We have a leak that is supposedly coming from the chimney in our 1885 house. The leak is coming through a wall on the 3rd floor where the wall butts up to the chimney. The chimney has a cement cap with screened vents built into two sides of brick work. Only hot water line is vented through this chimney. Background: we hired a leak professional to determine whether it was the roof, chimney or both that was the source of the problem. He said chimney and we proceeded from there. The repairs consists of removing and resetting some loose bricks at rear or backside of chimney and adding some flashing to what now exist. Had repairs made this past week. It then rained and I used moisture meter to test wall. It registered moisture at the same level (when it rains) as before repairs were made. No change at all with repairs.
What do we do now? After informing mason, he sent message that the bricks behind the face brick were crushed and soaking wet and that moisture was absorbed into face brick, rendering the moisture reading "not accurate". What do you think? What is tenable under these circumstances? Your help and insight is greatly appreciated.