Insulating foundation walls below the frost line is a waste
The soil below about 4 feet depth in most climates is at a constant 50 degree temperature — almost benign in its impact on heating or cooling. Conversely exposed concrete foundation walls are a true heat sink and either need to be insulated or not part of your home's heated envelope.
This is a continuing series by author and architect Duo Dickinson. Read his original expert insight on Swamp Yankee Green.
Duo Dickinson Duo Dickinson has been an architect for over 30 years and received over 30 awards. His work has been published in over 70 national publications. Mr. Dickinsons latest book is Staying Put. He is the architecture critic for the New Haven Register, and writes for Design Bureau, A.B., New Haven Magazine, and his own blog, Saved By Design. He has taught at Yale, Roger Williams and Harvard GSD Summer Program. www