UPVC, also known as Unplasticized Polyvinyl Chloride, is a low-maintenance building material used as a substitute for painted wood, mostly for window frames and door when installing double glazing in new buildings, or to replace older single glazed windows.
If you’re looking for energy efficiency, UPVC is the perfect choice, as energy rated UPVC windows are extremely thermally efficient.
They have a very low thermal conductivity as a result of the type of materials used in manufacturing. This stops heat escaping as easily as it can do with some other building materials.