Alternative to a Frost-Protected Shallow Foundation
I wanted to build my house with a Frost-Protected Shallow Foundation. I’ve got a set of plans that I’ve been running by builders, and most don’t have any experience with them. The general response is “Foundations need to go down 42 inches around here.”
The general design for the house is:
12″ Double walls with a bearing exterior wall.
FPSF Monolithic slab with full sub-slab insulation
Rochester, NY Climate Zone 5
I have a couple motivations for the FPSF:
1. I want the house to be accessible (not too many steps)
2. I don’t really want a basement.
3. I’m happy with a concrete floor.
4. It takes less excavation and concrete than a full basement.
Here’s the question: What should I consider as an alternative foundation that’s energy efficient, and keeps the house low to the ground and accessible?
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