Leviticus 14:42-45

Then they shall take other stones and put them in the place of those stones, and he shall take other plaster and plaster the house. “If the disease breaks out again in the house, after he has taken out the stones and scraped the house and plastered it, then the priest shall go and look. And if the disease has spread in the house, it is a persistent leprous disease in the house; it is unclean. And he shall break down the house, its stones and timber and all the plaster of the house, and he shall carry them out of the city to an unclean place.