The Guardian Material Warranty
Lifetime Limited Non-ProRated 50 Year Transferable Warranty

Interlock Metal Roofing Systems customers in Canada and the United States are backed by our company’s exclusive Lifetime Limited NonProrated and 50 yr transferable roof warranty. This comprehensive roof warranty is designed to give our customer’s maximum protection and peace of mind for a lifetime.
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What does my roof warranty cover?
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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Interlock® Material Warranty

Dry and Wet Weights



For more information about The Guardian Material Warranty, call us today!
+1(808) 793-4969 Mon – Fri: 09:00 – 18:00 and Sunday by Appointment