Slab edges, rim joists and perimeter insulation details create repeatable heat-flow paths.
The short explanation
Slab edges, rim joists and perimeter insulation details create repeatable heat-flow paths.
What to compare
Compare location, timing, weather or operating cycle, then open the matching Living House layer to see the plausible routes.
What would strengthen the explanation
A repeatable trigger and a physical route through the nearby assembly are stronger than appearance alone.
Next step
Document the original condition and choose the least destructive check that can separate the leading explanations.
Observe→Compare triggers→Repair source→Verify outcome
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