Interlock Roofing Ltd. announces the successful completion of benchmark tests meeting the standard of Underwriters Laboratory Standard 2218 Class 4, Impact Standard for Impact Resistance of Prepared Roof Covering Materials.
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Posts Tagged ‘underwriters laboratory’
UL Certification 2218 Class 4
Friday, March 10th, 2006 by Mark Vance
Roofing Blog
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- Aluminum Roofing and the Environment
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