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One of the world’s oldest polymers, polyvinyl chloride, or PVC, has evolved since the 1940s to become a universally used, cost effective, adaptable, safe and environmentally efficient material. PVC’s unique properties make it the material of choice for many applications, including construction, transportation, electronics and health.

Aluminium as a metal conducts heat very well indeed.  For windows and doors that are not thermally broken this would severely affect the performance of the window during the winter and the summer months.