About Distinction Windows

Family-run window, door and warm-roof specialists serving South Wales and beyond

A family business rooted in innovation

Distinction Windows Ltd was founded in 1983 by Wayne, Nannette, Oscar and Hettie Duncan, with support from close friends who helped shape the business in its early years. Wayne’s carpentry and joinery expertise laid the foundations for producing high-quality windows, doors and glazing products from the company’s long-standing base in Clydach, near Swansea.

Still proudly family-run, Distinction continues to grow with the next generation, including Kevin Duncan, carrying forward the company’s values of craftsmanship, reliability and personal service. Backed by a skilled, long-serving team and ongoing innovation, including the in-house Cwtch Roof system, Distinction Windows remains a trusted choice for homeowners across Swansea, Cardiff, the Bridgend corridor and surrounding areas.

Why choose Distinction Windows?

Local South Wales company

We support homeowners and businesses across South Wales and beyond with a friendly, reliable service.

You’ll get straightforward advice, clear quoting and a team that turns up when we say we will. From Cardiff to Carmarthenshire, we’re set up to deliver quality work across the region.

Family-run for decades

We’re an experienced family business with roots going back to the 1980s, built on word-of-mouth and repeat customers. Wayne and Kevin's experience is backed by a wider team and the next generation bringing new skills and standards. You get the care and accountability of a local, Welsh firm - not a faceless national installer.

High-quality workmanship

Our focus is doing the job properly, with careful fitting, tidy workmanship and attention to detail. We take pride in smooth finishes, clean lines and making sure everything works exactly as it should. The goal is simple: a great result that lasts, fitted right, first time.

Aftercare and peace of mind

We stand by what we install, with clear guarantees and practical support if anything needs attention. For FENSA-regulated installations we provide the relevant certification and compliance reassurance. If you ever need us after the work is complete, you’ll speak to a real team who knows your installation.

What we install

Windows

High-quality uPVC and aluminium windows tailored to your home. Choose from classic and modern styles, for improved security, insulation and clean, professional fitting.

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Doors

From composite front doors to sliding and bifold aluminium systems, we fit doors that look great and perform. Expect smooth operation, strong security and a tidy, reliable installation.

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Cwtch Roofs

Upgrade your old conservatory roof with our own tile-effect warm-roof product, designed and manufactured by Distinction Windows in South Wales - for improved comfort all year round.

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Glazed spaces

Conservatories, orangeries and glazed extensions designed and constructed to feel part of your home. Modern roof and window glazing options bring more light, comfort and visual appeal.

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Installations across South Wales & beyond

We install across South Wales – including Swansea, North Cardiff and the Bridgend corridor – and we can often support projects further afield. If you’re outside South Wales, send us a few details and we’ll confirm availability.

Common areas we work in include:

Swansea & Swansea Valley: Clydach, Ynystawe, Glais, Craig-cefn-parc, Pontardawe, Alltwen, Rhos and Trebanos.

Swansea coast: Mumbles (Mayals, Newton, West Cross), Langland, Caswell, Bishopston, Killay and Sketty.

Cardiff: Radyr, Morganstown, Pentyrch, Whitchurch, Rhiwbina, Thornhill, Lisvane, Cyncoed, Llandaff, Penylan, Tongwynlais, St Fagans and nearby.

Bridgend area: Pencoed, Laleston and Broadlands.