These links take you to information about Energy Efficient Roofing Products. A lot of the information is based from the US. you can see that our CertainTeed Silver Birch has earned a EnergyStar Saving Label.
https://www.certainteed.com/residential-roofing/residential-roofing-energy-tax-credit/
https://www.energystar.gov/products/building_products/roof_products
