The roofs in Vancouver are usually under threat. The city, along with its neighboring areas, generally gets twice the amount of rainfall than London, England gets. No thanks to its coasting climate, it outranks Calgary and Toronto in the “Most Huge Snowfall Days” category. Although the summers are dry and cool, excessive humidity due to indoor heating could bake the asphalt shingles of poorly ventilated roofs from the inside. [Read more…]