Across Canada, poor insulation remains one of the most frustrating renovation failures. Contractors frequently encounter homes with outdated fiberglass batts, gaps around windows, or insufficient attic coverage. These errors result in high energy bills, uncomfortable rooms, and moisture problems.
The fail often occurs because insulation is invisible once walls are closed. Homeowners prioritize finishes over efficiency, and some builders take advantage of this by skimping on quality. Renovators are then tasked with correcting mistakes that should have been avoided during initial construction.
Modern solutions such as spray foam, rigid board, and blown-in cellulose provide better performance, but require careful installation. Contractors emphasize that insulation must work as part of a complete system, alongside air sealing and proper ventilation. Without this, even expensive renovations fail to deliver comfort or efficiency.
Conclusion: insulation failures in Canada reveal how hidden details make or break renovations. For the trade, the opinion is unanimous: a renovation cannot be considered successful unless the home is energy efficient and comfortable year round.
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