Copper Snow Guard Shoe for Flat Metal Roof Surfaces provides affordable protection for your gutter, foundation or shrubbery. Ideal for mounting to corrugated or flat roof panels. Stainless steel offers no corrosion problems or stains and is suitable for paint to match your roof. The copper guard can be soldered or fastened to copper roof panels. Use neoprene washer screws to fasten. These guards provide 8.75 square inches of stopping area. Holes for #8 screws or rivets. All roof penetrations should be sealed with adhesive sealant (SB-190).