Liniar Flush Windows
A secure, energy efficient and visually appealing choice for homeowners.
Product Description
Liniar Flush Windows combine the timeless elegance of traditional timber joinery with the performance benefits of modern uPVC. Designed so the sash sits perfectly flush within the frame, these windows recreate the clean, understated lines associated with classic wooden windows while delivering outstanding durability, security, and thermal efficiency.
Suitable for both period and contemporary properties, Liniar Flush Windows provide authentic aesthetics without the ongoing maintenance demands of real timber. The result is a window that looks traditional yet performs to modern standards.
Technical Info
Liniar Flush Windows are manufactured using advanced multi-chambered uPVC profiles engineered for strength, insulation, and long-term reliability. Key performance features include:
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Multi-chambered profile design for enhanced thermal efficiency
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High-security shootbolt locking systems
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Smart Ready™ technology as standard
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Available in a wide range of colours and woodgrain finishes
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Dual-colour options for interior/exterior customisation
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Compatible with Georgian and Astragal bar styles
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Low-maintenance, weather-resistant uPVC construction
The energy-efficient profile system is specifically designed to help achieve leading BFRC energy ratings, improving comfort while reducing heat loss.
Authentic Flush Timber Look
High-Security as Standard
Engineered for Energy Efficiency
Why Choose Liniar Flush Windows
Liniar Flush Windows offer the perfect balance between heritage aesthetics and modern performance. Homeowners benefit from the appearance of handcrafted timber windows without the need for sanding, painting, or ongoing treatments.
Key advantages include:
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Clean, symmetrical flush sash design
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Exceptional durability and weather resistance
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Wide choice of contemporary and traditional finishes
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Strong security credentials and guarantees
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Ideal for renovations and new-build homes alike
These windows are particularly appealing where maintaining traditional character is important, but efficiency and longevity are equally essential.
Slim. Secure. Efficient
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Custom hardware
Customise with traditional monkey tail handles and dummy stays, or sleek modern handles.
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Add some authenticity
Astragal bars replicates the look of real wood and gives the illusion of individual panes.
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Multi-chambered
Manufactured using multi-chambered uPVC Liniar profile for optimum thermal efficiency.
Fast and reliable service
Enjoy an efficient turnaround from as little as 7 working days on stock colours, backed by a prompt, reliable service designed for the trade — with fast quotes, simple 24/7 ordering, and over £2 million of stock profile ready to cut and manufacture to your exact sizes, ensuring your projects stay on schedule.
Flush Casement Lead Times
Technology Behind a Modern Flush uPVC Window
Behind the classic appearance lies modern engineering. Liniar’s multi-chamber profile system creates insulating air pockets within the frame, significantly improving thermal performance compared with older window designs.
The integrated security system utilises shootbolt locking mechanisms designed for strength and reliability, while Smart Ready™ technology enables future security upgrades without replacing the window.
Unlike traditional timber frames, uPVC construction resists warping, rotting, and moisture damage, ensuring long-term stability with minimal maintenance.
Everything you need to succeed
It’s tough out there, we know. That’s why we want to give our customers the best chance to succeed by providing premium quality products at a competitive price, backed by exceptional service and support. At Window Warehouse we do all we can to help our customers achieve their goals; because we believe that your success is our success!
