What may be original
- Region-specific envelope and service systems
- Later retrofit layers should be recorded separately
Canada House DNA
Tighter envelope era
Improved insulation and glazing with greater dependence on controlled ventilation.
1980–2009
What deserves attention
- humidity accumulation
- air barrier discontinuity
- HRV balance
- ice dams
Reduce uncertainty first
- Confirm original construction era
- Record major renovations
- Compare symptom timing with weather and system use
Add to House DNA
Open My House →Original era is only the start.
Record later insulation, windows, roof, ventilation and service replacements in My House before relying on era assumptions.
