Interlock® Metal Roofing SystemsInterlock® Metal Roofing SystemsWith an Interlock Metal Roofing System you're protected with a lifetime of value.All of our metal roofing systems our total commitment to protect and beautify your home for life, and to safeguard the environment. Share on facebook Share on google Share on twitter Share on linkedin Interlock® SlateThe graceful elegance of slate roofing without the weight. Interlock® Cedar ShinglesCrafted to resemble thin-cut cedar shingles. Built to last for a lifetime… Interlock® ShakeThe natural beauty of cedar shake roofing. Lifetime performance. Interlock® Mediterranean TileInspired by luxurious look of traditional Mediterranean tile, without the heavy weight. Interlock® Standing SeamSuitable for a variety of slopes and design applications. Hidden fastener system. Interlock® Solid CopperInterlock offers Slate and Cedar Shingle in 12 oz or 16 oz, Shake or Standing Seam in 16 oz and Tile in 20 oz copper.