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NSF/ANSI 347
Sustainability Assessment for Single Ply Roofing Membranes


Amrize Building Envelope dba Duro-Last 
525 Morley Drive
Saginaw, MI 48601 
United States 
888-301-7712 
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Facility : Saginaw, MI



Gold Certified
Product Category Product Line/Trade Name Series/Number Certification Period Certification Number
Single Ply Roofing Duro-Fleece 50-mil, 60-mil, 80-mil 04/02/2024 - 04/02/2027 C0232077-103
Single Ply Roofing Duro-Last® EV 50-mil, 60-mil, 80-mil 04/02/2024 - 04/02/2027 C0232077-104
Single Ply Roofing Duro-Last® EV Fleece 50-mil, 60-mil, 80-mil 04/02/2024 - 04/02/2027 C0232077-105
Single Ply Roofing Duro-Tuff 50-mil, 60-mil, 80-mil 04/02/2024 - 04/02/2027 C0232077-106


Platinum Certified
Product Category Product Line/Trade Name Series/Number Certification Period Certification Number
Single Ply Roofing Duro-Last® 40-mil, 50-mil, 60-mil 04/02/2024 - 04/02/2027 C0232077-101
Single Ply Roofing Duro-Last X™ 50-mil, 60-mil, 80-mil 04/02/2024 - 04/02/2027 C0232077-102
Number of matching Manufacturers is 1
Number of matching Products is 6
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