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Decorative glass

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Multi-Point Locking

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Thermally Efficient

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Multiple styles

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Get a free quote on your own Roundbrand

Select and quote from many styles, colours and glass designs all from the comfort of your own home!


We have a beautiful range of colours to choose from. We have reliable classics like white and anthracite grey, woodgrain finishes for a traditional look and a selection of more unorthodox colours too. The foils are applied during the manufacturing process, so you’re guaranteed long-lasting colours that won’t fade.
That’s not all, we can also offer dual colour windows. Want a different colour on either side of the window? We’re more than happy to help. With our colour options, you can match the aesthetic of your current windows or go for something entirely new, the choice is all yours.

Our uPVC windows are the most technologically advanced in the market. Designed from scratch to meet the highest possible energy rating standards (WER ‘A’ rated), they are completely lead-free and fully recyclable.
We have everything from Liniar’s ever-reliable casement window to ultra-modern tilt & turn windows, as well as vertical sliders from Eurocell. They’re all made to measure and can be adjusted for multiple stylish looks. Whether you live in a contemporary new-build, a heritage home or a sophisticated townhouse, we’ll help you find the best new windows.

Our uPVC windows are inherently safe and secure and achieve full Secured By Design accreditation. We have a selection of sophisticated locking mechanisms available, all fitted with the latest anti-pick, anti-snap technology for complete home security.

Quote Your Own Windows

Check out our online pricing application and get a bespoke quote in the comfort of your own home. Our new system is easy to use and features detailed explanations of each product.

Improved Energy Efficiency

Installing new windows can dramatically improve the energy efficiency of your home. Liniar’s uPVC windows include their patented bubble gaskets which form a continuous seal around the entire frame. With new windows from Roundbrand, you won’t have to worry about draughts or water ingress, your home will resist everything Mother Nature can throw at it.

Our windows also offer superior thermal insulation. They’re fitted with double glazing as standard (with an optional triple glazing upgrade) and feature multi-chamber profiles. Roundbrand windows can achieve a Windows Energy Rating of A+12 and U-values as low as 0.8 W/m² K.


4.74 MB

Liniar windows pdf

672.34 KB

Liniar_fact_sheet_-_Windows.pdf pdf

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Our windows are available in multiple designs and styles, so you're sure to find one that's right for you. The range includes classic casement windows, large bay and bow windows for extra light, contemporary tilt and turn windows and much more. Contact us to discuss your ideas and let's see what we can create.

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 Guaranteed Quality

High Performance

All of our windows are built with high quality materials and are rigorously tested throughout the manufacturing process. We use state of the art techniques to create uPVC windows and maintain high standards of longevity, resilience and security.

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