Copper-faced high-performance SBS sheets give visual quality and enhanced durability compared with standard mineral surfaced built-up sheet roofing systems. The small squared pattern of indentations
Hot bitumen bonding roofing sheet
Fig. 6.3 Laying built-up roofing sheet with poured hot bitumen and
(Fig. 6.4) allows for thermal movement between the bonded sheet and metal finish. The material weathers similarly to traditional copper roofing systems producing a green patina. The metal foil thickness is typically 0.08 mm.
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