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How are PVs modules attached to the roof?

April 26, 2017attached modules pvs roof

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How are PVs modules attached to the roof?

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A racking (mounting) system is made from anodized aluminum and stainless steel. The system attaches directly to the roof rafters. Sealant is used to provide a waterproof penetration. Q. What is the weight of a PV module rooftop array? A. Solar electric systems are light–a system weighs approximately 2.5-3 pounds per square foot including modules, racking, and hardware. Most roof structures can handle the additional weight of a solar system.