Help, Help, Help! Radiators Knocking (really loudly!!!)
After our renovation last year our radiators started knocking, or rather BANGING, really loudly. We just have no idea what to do about it. We have a 100 yo brownstone in brooklyn, NY. We have tried tipping the radiators but that didn't help. The contractor suggested that some pipes must have shifted and water is collecting in a low spot. We only renovated about 1/4 of the building and did some work on the radiators but not much. We now have new tennents in our downstairs apt and i am sure they won't stick around if we can't fix this!!!