What material is used to make roofs in icy mountains areas?

In icy mountain areas, roofs are often made from materials that can withstand heavy snowfall and harsh weather conditions. Common materials include metal, such as galvanized steel or aluminum, which are durable and have a low friction surface to help snow slide off. Additionally, asphalt shingles and concrete tiles are also used for their insulation properties and ability to endure extreme temperatures. Proper insulation and ventilation are crucial to prevent ice dam formation and maintain roof integrity.