30 Years Treforest Glass has been manufacturing high quality sealed units to the industry for over 30 years. In that time we have gained significant experience in producing quality products as well as delivering great service. With the wealth of knowledge and expertise within our business, we keep customers up to date with the very latest products. We produce bespoke units using cutting edge specifications ensuring that our Customers have ‘options’ keeping them fully informed and supported throughout the whole process. We are very proud of our exciting product range, quality products, and unrivalled customer support.

We like to think of ourselves as problem solvers, so will do our utmost to find a solution to even the most difficult projects, which many other Glass companies would simply avoid.

Slim Low Sight Line Heritage UnitsIntegrated Blinds in Sealed Units











Glass Splashbacks0.9 Optitherm Advantage

Treforest Glass provides a wide variety of products and services to both Trade and Retail Customers. Whether you are looking for a new supplier of sealed units for your PVC, aluminium, or timber frames, or fancy that beautiful new conservatory extension for your home – we are the Glass Manufacturer for you.

Treforest Glass have an experienced team of fitters who are ready to take on any of your glazing projects, including kitchen splashbacks, wet rooms, feature walls, and glass worktops. We also replace 80’s polycarbonate roof sections with modern solar control glass, keeping your conservatory cooler in the summer and warmer in the winter.

 Based near Cardiff, Treforest Glass are recognised for our quality products and services throughout South Wales and the South West of England. We now ship our products to the whole of the UK including Ireland and the British Isles.  

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