PVCu or uPVC?
We are often asked “Are your windows PVCu or uPVC ?” or “What is the difference between PVCu and uPVC ?”
Quite simply, there is no difference. In Britain we used to talk about uPVC (unplasticised Polyvinyl Chloride), wheras the rest of Europe would refer to PVCu (Polyvinyl Chloride - unplasticised). However, since the end of the 1980s we have fallen in line with the rest of the continent and so now also call it PVCu (or to be more technically correct PVC-U). Pure PVCu is, in fact not used in the manufacture of windows and doors. Stabilisers and additives are included in the PVCu mix to help with colour, UV resistance and lifespan of the profile.