Interlock Metal Roofing
Locations across North America
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Interlock®, Interlock Lifetime Roofing Systems®, Alunar® are registered trademarks of I.E.L. Manufacturing Ltd. and are used under license.
State Contractor License No. CT 566583, MA 139640, RI 18345, ME CO9483, IL 104.013389, MN RR431129, WI 898136, OR 130826, WA INTERII020LC