Our flush casement windows from Liniar provide a beautiful, yet low maintenance and thermally efficient timber alternative that holds many environmentally friendly features, such as being 100% recyclable and lead-free.
The flush casement windows incorporate a dedicated slimline sash, allowing the face of the profile to sit flush with our outer frame. When closed, this recreates the look of traditional timber joinery without the need for maintenance and will never need to be sanded, treated, or painted.
We use a multi-chambered uPVC Liniar profile for optimum thermal efficiency, making these windows an investment for any home.
If you’re looking for flush casement windows, please do not hesitate to contact us.
Why choose Liniar flush casement windows from Pinnacle Windows? As a trusted trade supplier for uPVC Windows & Doors to installation companies across the UK, we know how essential quality, efficiency, and service are to you and your customers.
The Liniar flush windows offer a superior A+ energy efficiency rating, delivering robust thermal benefits beyond what traditional timber windows can achieve. Available in a sculptured profile with 28mm double or triple glazing, internally beaded, and offering a variety of opening arrangements, colours, finishes, hardware, and glazing options, these windows not only ensure excellent performance but also provide flexibility to cater to your clients’ various aesthetic preferences.
One key feature that sets them apart is the flush finish on external faces, offering a sleek and seamless look that’s hard to resist. Plus, rest assured with our 10-year guarantee and an impressive 2-week lead time for delivery. Choose Liniar flush casement windows to provide your clients with the ultimate blend of style, efficiency, and reliability.

Our flush casement windows are a beautiful, thermally efficient window option, available to trade installers and homeowners.
Ready for your new flush casement windows? Get in contact with Pinnacle Windows today for your free, no-obligation quote.
Flush casement windows sit flush with the outer frame when closed, creating a smooth, flat appearance that closely mimics traditional timber windows. This differs from standard casement windows where the sash sits proud of the frame, giving a more modern appearance.
Pricing depends on numerous factors including size, glazing specification, colour choice, hardware options, and quantity required. Each project is unique, so we provide personalised quotes based on your specific requirements.
We offer an extensive range of colours and finishes for flush casement windows, including woodgrain effects and contemporary colours. The available options depend on your chosen profile system. We can provide colour samples during your consultation.

