Metal Roofing Energy Efficiency: Lower Bills, Better Comfort
Metal roofing reduces cooling costs by 15–25% in Ontario summers. Cool roof coatings, reflective surfaces, and reduced attic temperatures all contribute to measurable energy savings.
Energy efficiency is an increasingly important consideration for Ontario homeowners — particularly as electricity costs continue to rise and summer cooling loads increase. Metal roofing offers measurable energy efficiency advantages over asphalt shingles, primarily through its reflective surface properties and its compatibility with proper attic ventilation systems.
How Metal Roofing Reduces Cooling Costs
PVDF Cool Roof Coatings
Energy savings data: The Metal Roofing Alliance estimates that energy-efficient metal roofing can reduce cooling costs by 10–25% in warm-season climates. In Ontario, this translates to $200–$600 in annual electricity savings for an average 2,000 sq ft home, depending on orientation, insulation levels, and HVAC system.
Metal Roofing and Attic Ventilation
Ontario Rebates and Incentives
Frequently Asked Questions
Does the colour of metal roofing affect energy efficiency?
Yes. Lighter colours reflect more solar radiation and stay cooler. However, even dark-coloured metal roofing with quality PVDF coatings outperforms dark asphalt shingles in heat reflection. If energy efficiency is a priority, VAH Construction recommends medium-grey or lighter colours.
Does metal roofing help with home heating in Ontario winters?
Metal roofing itself is a neutral factor in heating performance — it neither retains nor releases significant heat. The energy benefit is primarily in summer cooling. However, proper attic insulation (recommended with any metal re-roofing) has a direct positive impact on winter heating efficiency.
Is metal roofing ENERGY STAR rated?
Many standing seam metal products qualify for ENERGY STAR certification based on their solar reflectance and thermal emittance ratings. Ask VAH Construction about ENERGY STAR-qualifying panel options for your project.
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