Copyright © 2011 Interlock Industries, Inc.  All rights reserved. Interlock and Alunar logos are Registered Trademarks of I.E.L. Manufacturing Ltd. TEFLON® is a registered Trademark of E.I. du Pont de Nemours and Company used under license. 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.