What is Adfreezing?

(1) Best Practice Guide, Full Height Basement Insulation, Ontario Ministry of Municipal Affairs and Housing
Frozen soil can adhere to the outer surface of the foundation walls and footings and exert an upward force directly on the wall.

This is known as adfreezing. It can be particularly disastrous to concrete block foundations, pulling the individual blocks apart as soil lifts upward. (1)

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