Berger RT Snow Guards are non-penetrating devices which are secured to the standing seams of metal roofs utilizing stainless steel set screws to clamp them in place. They require no glues or sealants, and will not restrict thermal movement or contribute to unsightly oil canning. They are particularly suited to double-lock and mechanically seamed metal roofing, and being traditional in design, they are ideal for restoration and preservation work. Well suited for use with light gauge sheet metals.