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Cold Niagara winters demand better insulation. This guide breaks down OBC Part 9 requirements, insulation types, and common mistakes — plus a free printable checklist to keep your home warm and energy efficient.

(OBC Part 9 Friendly — What Every Homeowner Should Know) Introduction: Why Air Movement = Biggest Winter Energy Loss In a cold climate like Niagara’s, your furnace isn't just warming the air inside your home — it’s battling a hidden foe: air leakage . Even with great insulation, uncontrolled air flow (infiltration and exfiltration) can drive 50 % or more of winter heating losses in older or leaky homes. Warm indoor air seeks lower pressure, exits through cracks; cold outdoor