Hi Peter, thanks for your question. According to the manufacturer, floating foundation systems were actually developed for these exact frost heave areas where freeze and thaw ground movement is a major issue for traditional "dig a hole and pour concrete" structures. So, [TuffBlocks](https://www.diyhomecenter.com/buildtuff-tuff-block) will not be impacted by frost heaves, making them a perfect solution for applications in these areas.