A lot of their problems are related to bad construction, but it's important to recognize that this house design is hard to construct well. Water is the most ins

A lot of their problems are related to bad construction, but it's important to recognize that this house design is hard to construct well. Water is the most insidious thing to a house, and builders are not particularly great at waterproofing even above grade structures. In the case of an underground structure, that water hangs around and has a lot of time to find its way in.