Posted 7/27/2015 22:23 (#4703433 - in reply to #4703101) Subject: RE: I'll admit my ignorance ... frost walls?
Saskatchewan
Nothing stops the ground from freezing under the pad. In Canada we use more fill that won't expand when freezing like crushed rock or gravel with minimal clay. It won't hold the moisture and won't expand. The pad is inside the frost wall and Floats separate.
Concrete project
