At QBD, we proudly install high quality Liniar uPVC windows and doors for homeowners across Cheltenham, Gloucester and the surrounding areas. Designed and manufactured in the UK, Liniar products combine modern styling, energy efficiency, security and low maintenance.

Why Choose Liniar?

Liniar is a well established UK manufacturer with decades of experience in designing high performance uPVC windows and doors. Built on a strong foundation of innovation, investment and sustainability, the brand is known for doing things the right way, from product development through to long-term performance. As part of the global Quanex group, Liniar benefits from advanced manufacturing expertise while maintaining its commitment to quality, reliability and modern British design.

Beautifully Engineered uPVC Windows

Casement windows are the most popular style of uPVC window in the UK, offering a timeless and popular home improvement solution. Liniar has updated the design by creating an advanced market leading, multi chambered uPVC profile for its casement windows, which uses less steel than traditional frames. With frames featuring Liniar’s patented, co extruded bubble gasket, property owners can say goodbye to draughty windows.
As well as offering uninterrupted views, Liniar French windows open fully with no central mullion, creating a wide, clear opening. This design also allows them to be used as an effective fire escape where required. Flush sash windows recreate the authentic look of traditional pre-1930s timber windows, while incorporating modern energy efficient technology and low maintenance materials. Ideal for homeowners who want to preserve a classic appearance, they are especially suited to period properties and conservation areas. Liniar’s uPVC flush sash windows can be finished in realistic woodgrain foils or smooth contemporary colours, giving you the flexibility to achieve either a heritage or modern look.

Ideal for larger windows, Liniar uPVC tilt & turn windows offer a versatile choice of openings, with a fully opening aperture from the side, ideal for fire escapes, combined with a tilted pane for controlled ventilation, depending on the position of the handle when opened. Highly secure, Liniar tilt & turn windows are offered with PAS24 and Secured By Design for peace of mind.

Bay windows can add character and additional space to your home, helping to increase natural light and create a striking feature. Liniar bay or bow windows can enhance both the interior and exterior of your home, delivering instant kerb appeal.

Elegant & Secure French Doors

Liniar uPVC French doors offer an attractive alternative to bifolding or sliding patio doors where apertures are wider than a single door. Comprising a set of two doors, French doors open either inwards or outwards, with the central mullion (bar) fixed to the secondary door to provide a wide, fully opening expanse when both doors are opened. This creates a seamless connection between your home and garden, while allowing plenty of natural light to flow into your living space and maintaining strong levels of security and performance.