Foundation Edge Detail - Foam Insulation Visible

Photo Details
- Date: October 20, 2025
- Time: 6:49 PM EDT (evening/dusk)
- Weather: Clear skies, 55°F. Good evening lighting conditions.
- Phase: Foundation forming with frost protection installation
- Location: 309 E. 7th St., Clare, MI
- View: Close-up of foundation edge showing foam insulation
Description
This detailed evening shot provides a close view of the foundation edge construction, clearly showing the foam insulation installed along the perimeter for frost protection.
Visible Elements
- Foam Insulation: White/light colored rigid foam board visible along the foundation edge
- Appears to be installed vertically in the perimeter trench
- Likely the 9” foam frost protection specified in contract
- Positioned against the exterior of where the rat wall will be poured
- Perimeter Trench: Deep excavation around foundation perimeter
- Dark soil walls visible
- Clean vertical cuts
- Interior Foundation Bed: Leveled sand/gravel surface ready for concrete
- Wooden Forms: Perimeter forms with stakes for concrete containment
- Site Context:
- White lattice fence in background
- Existing white house visible
- Dusk/evening lighting (lower light levels)
- Fall foliage and landscaping visible
Technical Details
The foam insulation installation is critical for:
- Frost protection: Prevents frost from penetrating beneath the foundation
- Energy efficiency: Reduces heat loss through the foundation
- In-floor heating system: Helps contain heat from the hydronic heating system
This matches the contract specification: “8’ W x 24’ deep concrete ratwall w/ 9” Foam frost protection”
Construction Sequence
At this stage, the construction sequence shows:
- ✅ Site excavation completed
- ✅ Perimeter trench dug to 24” depth
- ✅ Interior base leveled and compacted
- ✅ Foam insulation installed in perimeter trench
- ⏳ Next: Concrete pour for rat wall and slab
Related Documents
- Hershberger’s Contract - Foam frost protection specifications
- Garage Insulation - Insulation design and specifications