Roof Lanterns
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Trusted manufacturers since 2000
Professional Installer Network
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Made in the UK
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Bespoke Complex Products Fabricated
Glass Box Extensions from Direct Trade Windowsâalso known as frameless conservatoriesâoffer a sleek, contemporary way to add light, space, and architectural impact to any property. These fully transparent structures are built using structural glass supported by laminated glass beams and fins, eliminating the need for visible metal supports. The result is a truly frameless design that connects beautifully with the existing building and enhances your living environment with uninterrupted views and exceptional natural light.
Ideal for winter gardens, atriums, balcony enclosures, glass roofs, and glazed facades, our glass box extensions are engineered for performance as well as style. With excellent thermal insulation, heated glass options, solar control coatings, and low-maintenance finishes, these structures can be enjoyed year-round. Every glass extension is custom-made in-house for precision fit and maximum performance, making them a perfect solution for homeowners, architects, and developers alike.
In addition to our glass box rooms, Direct Trade Windows offers a complete range of bespoke structural glazing solutions for both residential and commercial projects. Whether you're designing a modern feature window or connecting buildings with structural glass, we provide custom-engineered solutions tailored to your project's needs. All units are manufactured in-house using high-spec aluminium and structural glazing, giving you full control over performance, size, and finish.
From panoramic curved glass walls to oriel box windows, walk-on glass floors, and glass extensions with integrated glass roofs, we supply glazing systems that combine function with aesthetic impact. These elements can be integrated into high-end residential properties, commercial developments, or architectural refurbishmentsâdelivering visual clarity and high thermal performance.
Glass
Unglazed aluminium window frame with angled top.
Standard self-clean glass panel with clear finish.
Standard toughened glass panel with clear finish.
Clear solar control glass panel for improved comfort and energy efficiency.
Self-cleaning glass panel designed to break down dirt and reduce cleaning frequency.
Self Clean Solar Control panel combining dirt-repelling and heat-reducing technology.
Satin obscure glass panel with smooth frosted finish.
Laminated security glass panel with clear finish.
Gallery
Glass Box Extensions are innovative structures designed to flood living spaces with natural light, incorporating winter gardens, atriums, and glass facades. They offer a bright and open environment for various purposes.
Glass Box Extensions are customisable in shape and size, feature durable aluminium frames, and can be paired with steel-look aluminium bi-fold and sliding doors. They are ideal for contemporary architectural designs and come with a range of insulated glass systems.
Horizon Roofs offer uninterrupted views of the horizon or skyline, blending vertical and pitched glass with glass-to-glass joints. They are perfect for new builds and extensions, creating a striking 'up and over' design for an unmatched aesthetic impact.
Yes, Glass Box Extensions are an excellent choice for contemporary architectural designs, as they feature minimal frames and prioritise exceptional thermal efficiency, making them suitable for modern spaces.
At Direct Trade Windows, we offer bespoke glass structures such as glass window seats, full-height Oriel windows, balcony enclosures, sliding windows, and wrap-around balustrades, tailored to your installation or home improvement project needs.