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Business Details
36 Years
experience
Your Trusted Partner for UPVC Windows & Doors in Cardiff
Established in 1990, South Wales UPVC is South Wales' longest-serving family-run double glazing business. Our mission has always been to build a reputation for excellence and quality products, one customer at a time, while maintaining high standards. With over 30 years of experience, we specialise in supplying and installing high-quality double-glazed windows, doors, and conservatories tailored to individual specifications. Our team of skilled craftsmen ensures efficient and cost-effective solutions for homeowners across Cardiff, South Wales, and the South West. We pride ourselves on offering a wide range of products, including UPVC windows, doors, conservatories, and roofline solutions, all manufactured to the highest standards.

Our commitment to customer satisfaction is evident through our insurance-backed 10-year guarantee, free no-obligation quotations, and a wealth of positive reviews from satisfied clients. As a FENSA-registered company, we adhere to strict industry standards, ensuring all our work meets regulatory requirements. Our family-run ethos combines traditional values of compassionate customer care with modern, high-quality UPVC products. We maintain in-house tradesmen to guarantee skill levels and workmanship, passing cost savings directly to customers. Our services extend to commercial properties, including schools, hospitals, and shops, reflecting our versatility and expertise.
Services
UPVC Windows UPVC Doors Conservatories Porches Commercial Roofline
Details
  • Year established: 1990
Highlights and features
  • 30+ years of continuous family ownership and operation
  • Insurance-backed 10-year guarantee on all installations
  • Free, no-obligation quotations with expert advice
  • Consistently receives 5-star customer reviews across platforms
  • In-house skilled craftsmen ensure superior workmanship and cost efficiency
Associations and certifications
  • FENSA
What people say
Excellent service Competitive prices Highly recommend Quick service Fantastic quality
Services
UPVC Windows
Our UPVC windows provide exceptional thermal efficiency and security while enhancing property aesthetics. Available in various styles including casement, sash, and flush options, they reduce heat loss and noise pollution. Manufactured to British standards, these low-maintenance windows offer long-term durability and energy savings for residential and commercial properties.
UPVC Doors
We supply and install secure, energy-efficient UPVC and composite doors featuring multi-point locking systems. Options include front entrance, patio, and bi-fold designs in multiple finishes. Our doors combine modern security features with customisable aesthetics to suit traditional and contemporary properties across South Wales.
Conservatories
Bespoke conservatories designed to maximise natural light and usable space. Available in Edwardian, Victorian, and lean-to styles with temperature-controlled glazing. Our installations include planning assistance, CAD drawings, and complete build services with electrical and heating integration for year-round comfort.
Porches
Custom-designed porches enhance property security and kerb appeal. Constructed with durable UPVC materials featuring secure locking systems. We offer full design consultation and installation services to create weatherproof entrance areas that complement existing architecture.
Commercial Roofline
Durable UPVC roofline solutions including fascias, soffits, and guttering systems. Designed to withstand Welsh weather conditions with minimal maintenance. Our installations prevent water damage while improving building aesthetics, suitable for both residential and commercial properties across South Wales.
People
Haydn
Founder
With industry experience since the 1970s, Haydn established South Wales Windows in 1990. He continues part-time involvement, sharing expertise with the next generation.
Catrin
Director
Joining in 2009, Catrin transitioned from administrative roles to directorship. She manages daily operations alongside her husband, ensuring continuity of family values and service standards.
Questions
Do you provide guarantees on your installations?
All work comes with an insurance-backed 10-year guarantee covering materials and workmanship.
Can I get a free quotation?
Yes, we offer free, no-obligation quotations with expert advice from our trained consultants.
Are your installers FENSA-registered?
We are FENSA-registered, ensuring all replacement windows and doors meet building regulations without additional certification.
Do you offer financing options?
Yes, we provide finance through Improveasy Ltd, a Financial Conduct Authority-authorised broker offering credit facilities from multiple lenders.
What areas do you serve?
We primarily serve Cardiff, South Wales, and the South West, with commercial projects extending nationwide.
Can you assist with planning permissions?
Our team handles planning applications and CAD drawings for conservatories and major home improvements.
Reviews (8)
Stephen Turner
Dec 17, 2020 Report
Had windows and a new door fitted, great products at very competitive prices. Fitters were very professional and did a great job. Would highly recommend
Jackey Dean
Aug 22, 2020 Report
Pleasant, friendly and a most professional service from start to finish. Very competitive prices and an absolute pleasure doing business with you guys. Would highly recommend.
Gemma Jones
Jul 06, 2020 Report
We had our door fitted last week with South Wales Windows and we absolutely love it. It looks amazing and was very reasonably priced. Customer service was excellent from the first enquiry and Catrin was extremely helpful. We were also kept updated on our order at all times. The fitters were great too, very professional and they did an excellent job. We will definitely use South Wales Windows in the future and highly recommend.
Nedda Kennett
Apr 17, 2020 Report
They are very good I have seen the work.Not bias ask any of them I am blunt direct honest and its excellent work
Sam Davies
Mar 23, 2020 Report
Fab, prompt, friendly and reliable! Will use them again when the flooded works have been finished. A great help to us. Thank you
Margaret Harper
Mar 18, 2020 Report
Family firm with family values - good quality products at competitive prices, delivered at agreed time and fitted professionally with minimmum inconvenience to customer, leaving property clean and tidy on completion. Highly recommended.
Sue Prior
Mar 18, 2020 Report
Got to be fair my new door is so much sturdier than its predecessor. Fab service from this company. They even changed locks on windows that were never installed properly initially. When you find a good supplier and service that can be trusted. You never forget them
Deborah Ramsay
Mar 18, 2020 Report
Over the summer I had french doors and a large living room window fitted. Fantastic service so much so that I am waiting my next installing of full upstairs. Highly recommend small, friendly family business