Crushed rock that is coated with a ceramic coating and fired, used as top surface on shingles.
Crushed rock that is coated with a ceramic coating and fired, used as top surface on shingles.
© 2018 The Interlock Group. Interlock®, Interlock Lifetime Roofing Systems®, Alunar® are registered trademarks of I.E.L. Manufacturing Ltd. and are used under license. Teflon™ is a trademark of THE CHEMOURS COMPANY FC, LLC used under license by Interlock Roofing Ltd. The ENERGY STAR name and the ENERGY STAR symbol are registered trademarks of the United States Environmental Protection Agency and are used with permission. When installed properly, this product will help reduce energy costs. Actual savings will vary based on geographic location and individual building characteristics. Consult your product manufacturer, roofing contractor, or call 1-888-STAR-YES (1-888-782-7937) for more information.
