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Grand Design Products

We offer a wide selection of custom made Aluminium Systems, ranging from Bi-folding, Patio & sliding doors to Casement, Tilt and turn & sliding windows. All of our products are built to last!

Crafted locally in South Wales

We are proud of our Welsh Heritage. And so all our products are manufactured locally, with passion, in our factory in Cowbridge. We are proud of our Welsh windows and so we oversee every individual project personally.

Fitted With Passion

From design and manufacture to installation, from individual homeowners to prestigious architectural endeavours, we are passionate about providing a complete service to satisfy any customer.

Range of Custom Aluminium
Windows & Doors.

Our Aluminium Profiles catalogue features a wide range of custom solutions for any kind of build and for any kind of customer!

We specialise in the manufacturing of aluminium bi-folding doors, sliding doors, entrance doors, windows, roof-lights and curtain walling.

We supply Alitherm and Eco-Futural profile systems for Casement, Tilt & Turn or Sliding windows. As well as, the Visofold and Visoglide series for large patio door solutions.

Lastly, we can cover any shopfront or ground floor treatment builds with our Smart-Wall profile for any commercial use.

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Heritage Range for Barns, Conversions & Historical Buildings.

If you are looking to renovate, convert or rebuild any older or historical building. Check our Heritage range of window systems. We can promise to bring all the modern innovations in thermal insulation without compromising the ‘historical’ feel of the building. Find out more below!

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Our Passion For Windows

Being part of the Performance Group of companies, we have extensive experience working within the industry. We are passionate about windows and we make it our top priority to manufacture and supply high quality aluminium windows, doors and curtain walling systems that excel in the standards of efficiency and performance.

Want a Price?

Use our instant estimate tool to get a value price for getting extra special glazing in your home.