This is a material warranty only for aluminum and copper metal products manufactured by Interlock Roofing Ltd.

The Manufacturer warrants the Interlock® cedar shingle, tile, shake, slate, diamond, standing seam, panels and trims (“Product”) to be free from manufacturing defects that result in rusting, rotting, splitting, cracking (including splitting, cracking and perforation from hail stones measuring 1 1/2 inches in diameter or less) curling, losing impact resistance with age, burning and supporting combustion and which manufacturing defects materially affect the Product’s performance (“Nonconforming Product”), subject to the exclusions and limitations set forth in this certificate. Other products or materials used in the installation may have their own manufacturer’s warranty. The installation contractor will provide you with a separate workmanship warranty.

The Manufacturer warrants that the Products will resist wind speeds of up to one hundred and twenty (120) mph (193kph) when installed in accordance with IRL’s recommended installation procedures.

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