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The leading provider of high quality UPVC windows and doors in Cardiff & South Wales since 1990

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The longest-running double glazing company in South Wales.

There’s a reason we’ve been in the trade for so long. A guarantee from South Wales Windows and Doors is worth more than the paper it’s written on – contact us today for a free, no obligation quotation. We look forward to helping you transform your property with our windows, doors and more.
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Our Products

UPVC Windows

Stylish, high-quality & affordable windows to suit any property
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UPVC Doors

Make a great first impression with our extensive range of doors
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Enhance your home with a bespoke, spacious conservatory
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Welcome guests with our secure and aesthetically pleasing porches
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High-Quality Double Glazing in Cardiff & South Wales

Founded in 1990, South Wales Windows & Doors is the region’s longest-established provider of double glazing and UPVC doors. We believe that we are the best choice for windows in South Wales because we:
  • Are registered with FENSA
  • Offer an insurance-backed 10-year guarantee
  • Provide free, no-obligation quotations
  • Get lots of positive reviews from our happy customers!
We have a number of other qualities that set us apart from all the other UPVC windows and double-glazing suppliers in Cardiff and South Wales.

We are a family run business with over 25 years of continuous trade with the same ownership. Some of our employees have been with us since the very beginning.

We provide only the highest quality UPVC and double-glazing products on the market and our highly skilled, experienced craftsmen are on hand to provide you the work you want at a fair price.

Warmer & Quieter

Our double glazed and UPVC windows and doors are far better at reducing heat loss and minimising outside noise than single glazed windows are.

Energy Efficient

Dramatically improve the energy efficiency of your home with the help of South Wales Windows and Doors. Installing our energy saving products makes reducing your carbon footprint simple!

Looks Great

Available in a range of colours and styles to create a desired look of your choice. Our team works to tailor your chosen products to suit your exact requirements.

Recommended Manufacturers We Work With:


Our products offer homeowners in Cardiff and South Wales the following benefits:

Wide Range

Our vast array of products and styles will help you to achieve whatever look you want. Whether you want to maintain a period style home or change the appearance of your business to something more modern, we can accommodate you.

Home Visits

We can arrange for one of our highly-trained sales consultants to talk you through all the different options available to ensure you get exactly what you need to complete your project.

Placing an Order

Upon placing an order with us, we will arrange a convenient installation date that suits you. You can call to discuss the progress of your project any time.

Installation Day

Our highly-trained professional craftsmen will arrive on a pre-arranged day at a previously agreed time. They work quickly and efficiently to install your chosen products, taking great care not to make a mess!

Recent Projects

If you’d like to see some of the projects we have recently completed in Cardiff, South Wales and the surrounding areas, look no further. Here you can see a selection of case studies showcasing the amazing results we have been able to achieve for our clients.

If you like the look of the products featured here – please don’t hesitate to get in touch and speak to a member of our team.
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FENSA Registration

We are part of the competent person scheme for the replacement of windows, doors, roof windows and roof lights in the UK.

An Insurance-Backed 10 Year Guarantee

Our guarantee ensures your windows look and work as they should for years after they’re installed.

Free, No-Obligation Quotations

We are happy to discuss your ideas and any of our products to help you make your decision, free of charge. Submit a quote request form online today.

Positive Reviews from Happy Customers

We have received some excellent feedback from our customers, take a look at our testimonials page to find out more.