How to fix sunken stone foundation with crawl space? There are only few granite piers holding up the frame. Should i dig under the stones and put more rocks there or start stacking stones over the sunken one and hope it does not sink more? Frame is made out of logs so it should not be too hard to jack up.I want to avoid using piles and concrete if possible but the clayey ground does not look good.
>>2877447I would say shimming from the top is the safer approach, especially for DIY.
>>2877447Just dump calcite in there alongside gravel.
>>2877447In almost all cases jacking it up stacking more is better if that's an option. You may need to do it more than once, but it WILL stop sinking after it's done enough.
>>2878496Is it not beneficial to go under the frost line? You think that the stones will conduct the cold down there anyways so its not worth the effort? The current foundation is so thin that i dont feel comfortable going up from there when we are talking about pretty considerable rise. So maybe i should just dig around the stones to build strong enough base for the later layers?
>>2878514How deep is your frost layer? I don't know your budget or equipment, but you might need to dig several feet down to try to deepen the foundation to the right levelIt would be cheaper and enormously easier to jack it up and stack upIt would be best to dig past frost and stop the problem with certaintyDepends on your actual capabilities
