It can definitely be repaired, it would need extensive spackling, most likely with 2 part Bondo, then sended primed and painted.
this is something that should not take more than 6-8 hours in total, ob ... read more
Sounds like inadequate venting for the drain lines. Could have been build this way or maybe a clog has developed in the vent pipe. Such as birds or squrrels building a nest in the vent pipe up on the ... read more