frost guard went in… a little late

What happens here

This project describes the retrospective installation of rigid foam insulation around a building's foundation. The process involves excavating a trench around the perimeter, installing two-foot-high rigid foam panels (often referred to as styrofoam) against the foundation wall, and then backfilling the trench. This insulation acts as a 'frost guard,' preventing frost penetration into the ground near the foundation, which helps mitigate potential issues such as concrete heaving, foundation damage, and freezing of water pipes.