PVCu or uPVC - What is The Difference?

We are often asked the questions "Are your windows PVCu or uPVC?" or "What is the difference between PVCu and uPVC?"

Quite simply put, there is no difference. In Britain we used to talk about uPVC (unplasticised Polyvinyl Chloride), whereas 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. Small amounts of stabilisers and additives are included in the PVCu mix to help with colour, UV resistance and lifespan of the profile.

Why Do We Use PVCu In Our Windows, Doors And Conservatories?

  • PVCu does not rot or biologically decompose.
  • PVCu retains its shape within normal climatic temperatures (does not warp or significantly expand or contract).
  • PVCu is highly impact resistant.
  • PVCu is weather resistant with little or no maintenance required.
  • PVCu can be recycled to make many different products as it can be reshaped at high temperatures.
  • Why Would You Choosse PVCu Over Wooden Alternatives?

  • PVCu looks good, giving clean lines and a choice of finishes.
  • Low maintenance, PVCu is designed to last.
  • High insulation and strength properties.
  • PVCu allows all year round use with no distortion.
  • PVCu incurs lower initial cost than alternatives and gives long term economic benefits due to long lifespan and low maintenance.


    Prior Conservatories, Bird Industrial Park, Station Road, Long Marston, Warwickshire, CV37 8RP.
    Telephone: 01789 720222. Fax: 01789 720220. Email:sales@priorconservatories.co.uk

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