Leviticus 14:41-45

41He must have all the inside walls of the house scraped and the material that is scraped off dumped into an unclean place outside the town. 42Then they are to take other stones to replace these and take new clay and plaster the house. 43“If the defiling mold reappears in the house after the stones have been torn out and the house scraped and plastered, 44the priest is to go and examine it and, if the mold has spread in the house, it is a persistent defiling mold; the house is unclean. 45It must be torn down—its stones, timbers and all the plaster—and taken out of the town to an unclean place.