uPVC Windows

uPVC Windows and Doors

Windows, Materials

Un-Plasticised Polyvinyl Chloride, otherwise known as uPVC, is one of the most widely used products by homeowners, designers and architects in modern windows and doors. It is a widely versatile material that has been in use since the 1980s. Modern uPVC is completely lead-free and 100% recyclable; it is an enormously durable material that will never rust, rot, flake or disintegrate.

The stand out feature of uPVC is that it is almost completely inert and, therefore, a very low maintenance material. It won’t rust, rot or fade and solely needs a wipe down every now and then to keep it in perfect working order. This is a huge advantage in comparison to metal or wood alternatives which can be needed to be replaced as regularly as every 6 years. Typically, uPVC windows have a long lifetime and will rarely need to be replaced or maintained.

uPVC is used in modern window and door frames because of its outstanding insulating properties. When it comes to insulation, uPVC completely surpasses wood and aluminium alternatives. Older uPVC windows can have the reputation of being poor thermal insulators, however, this is not the case with the modern products which are some of the most highly performing.

Not only is it a competent insulator against temperature changes, it can also largely reduce noise pollution so is perfect for busy environments such as cities or near railways. uPVC windows and doors provide the best soundproofing ability of most modern building materials and can be fitted with double or even triple glazing to increase this performance.

Due to its sudden increase in popularity in the 1980s, uPVC has become a comparatively affordable and in-demand product in homes and commercial buildings. It is by far the most cost-effective window and door material available on the market today and is perfect for projects working to a tight budget.

Aesthetically, uPVC products can be a controversial topic. Loved by some and hated by others, it really comes down to taste. However, if it is the white plastic look that it putting off choosing uPVC, most companies will offer the option to coat your uPVC windows and doors in almost any RAL colour or finish. This means that uPVC windows can give the appearance of almost any material while still giving a high-quality performance.


  • Almost completely inert and unreactive
  • Rarely needs to be replaced
  • Outstanding thermal insulator
  • Impressive noise insulation
  • Very low maintenance
  • Very cost-effective


  • Aesthetics

Deemed to be a less attractive product when compared to aluminium and wood alternatives, due to bulkier sightlines, larger frames and general look

  • Structural Integrity

Despite their robustness, uPVC windows and doors are prone to sagging as they are generally lightweight and also because they are structurally not as strong as aluminium windows. Extreme heat can even rupture their frames.

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