Snow management is a specialized service offered by a metal-roof-contractor in colder regions. Because metal is so smooth, snow can slide off in large, dangerous sheets called "roof avalanches." Contractors install snow guards or rail systems to break up the snow or hold it in place so it melts gradually. This protects landscaping, gutters, and pedestrians below. A professional calcul... https://kkroofspecialist.com.sg/metal-roof-contractor/