Snow guards are designed to hold snow in place on a roof and allow it to melt down at a gradual pace instead of coming off in large sheets or chunks. They can protect people, animals, landscaping, shrubbery, cars, gutters, and downspouts from deadly avalanching snow and ice. They can be used on all different types of roofs. This particular model is commonly used on residential houses, but can be used on commercial buildings as well.