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UL 90 TESTING

SMI 1.5″ MS UL 90 Test – Construction No. 605
16″ wide 24-gauge 16 oz copper over plywood

SMI 1.5″ MS UL 90 Test – Construction No. 603
20″ wide .032 embossed aluminum over plywood

SMI 1.5″ MS UL 90 Test – Construction No. 554
90° seam 16” wide 24-gauge over plywood

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A Brief History of Standing Seam Metal Roofing  

A Brief History of Standing Seam Metal Roofing  

Discover the history of standing seam metal roofing — from ancient copper and lead to today’s high-tech steel, aluminum, and galvalume roofing systems.

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