Casement windows

Casement windows are by far the most popular style of replacement windows in the UK.

Casement windows

Versatile and popular

Casement windows are by far the most popular style of replacement windows in the UK. Made from durable uPVC they offer a stylish, classic design and an almost limitless range of configuration options and colours, making them an ideal choice for most homes, new and old.

Creating the perfect colour scheme

Our vast range of colour and finish options allows you to complement the exterior and interior of your house by choosing one colour and finish for the inside and a totally different one for the inside. The choices include an extensive range of woodgrain effect finishes and attractive colours from traditional to contemporary.

The leading brand at affordable prices

We specialise in Rehau windows, the premium worldwide brand of windows, doors and conservatories, renowned for its unrivalled quality, technological innovation and exceptional design. The unique Rehau window profile combines the best in German design with UK manufacture so you can rest assured that your new windows not only enhance the look of your property but last for years to come and help you save money by keeping your home energy efficient.

Key benefits of Rehau replacement windows

  • Low maintenance and incredible lifespan
    The smooth, high gloss finish of Rehau replacement windows is specifically designed to retain its pristine appearance for long after they have been installed. Needless to say your new windows will never warp, rot or need painting.
  • Highly energy efficient
    Our double glazed window installations are A rated – the highest accredited energy rating – as standard. Reduced heat loss and draughts means you can enjoy smaller energy bills.
  • Peace and quiet
    The superb acoustic performance of Rehau windows means outdoor noise levels are greatly reduced - by as much as half.
All windows are installed by our highly skilled fitting team. Hafren Windows insist on a minimum of 10 years installation experience for all fitters. The installation is of course FENSA Certificated, with a ten year Insurance Backed Guarantee, and is supported by the Manufacturer’s Guarantee.

Windows gallery


Our colour selector has been created to help you visualise how colour could enhance your home.
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We cover the whole of Powys, Ceredigion and the Marches. Don't hesitate to contact us if you are outside these areas.

Read more about what it means to be a REHAU Authorised Partner