Leaking steam radiator pipe above plaster ceiling
My steam boiler's pressure went nuts, sent high-pressure hot water through the radiators. Now the plaster ceiling above the living room of our 1925 home is soaked and dripping water, an obvious leak in a horizontal pipe leading from one room to another. Am afraid the young plumber who came doesn't know what he is doing. He began chopping at the ceiling with the claw end of a hammer and then stopped. What is the appropriate way to access and repair this pipe?