Elegant Composite Windows

Designed for the UK commercial market, delivering high performance thermal insulation, enhanced security, weather resistance, and sustainable construction using up to 80% recycled content. ThermoFibra technology replaces steel reinforcement with structural glass fibres for improved strength, lighter weight, and better thermal performance. Industry highlights include thermal efficiency as low as 0.7 W/m²K, PAS 24:2022 certification, Class 4 air permeability, and tested resistance to UK exposure conditions. Learn more about energy performance improvements using the energy savings calculator. Explore business support tools via the Deceuninck business kit.

Style & colour

Windows in the Deceuninck Elegant system (with ThermoFibra Infinity 76 technology) are available in a wide palette of over 50 colours and finishes, including modern smooth foils, wood-effect finishes, and metallic options. Wood-effect finishes such as Golden Oak, Woodec Oak (honey, bleached), Swamp Oak, Winchester, and Turner Oak look very well on our windows. Modern greys, such as: Anthracite (matte/smooth), quartz grey, basalt grey are also very popular. Deep colours and matt tones: Deep black (Jet Black), cream shades, wine red, and bottle green (ideal for rustic and classic styles) are available too.

Elegant System is also available in Decoroc, Deceuninck's patented colour-coating and micro-sprayed paint system. It delivers a tough, oven-cured, low-maintenance matt finish that resists scratches and impacts while matching the look and feel of high-end aluminum powder coatings.

Durability

Strength

A game-changing technology that eliminates the need for steel reinforcement, ThermoFibra continuous glass fibre strands are embedded within the profile, delivering exceptional strength, rigidity, and durability. The result? Stronger, lighter, more sustainable windows and doors that are easier to fabricate, transport and install, without compromising on thermal performance.

Design

Sleek Design

Glass fibre technology allows for up to 20% slimmer sections sizes maximising glass sightlines. External rebate depth externally reduced from 20mm to 12.5mm creating a sleek external appearance

Insulation

With its intelligent chamber design, additional central seal and deeper section depth for greater glass thickness, Elegant can achieve remarkable noise and heat insulating U Values as low as 0.7 whole frame.

Technology

THERMOFIBRA

The steel reinforcement in the sash is replaced by structural glass fibres, providing superior thermal insulation. Elegant Composite is the only well- functioning steel-less window and door solution on the market. Due to the low weight of the ThermoFibra sashes, the hinges are less stressed after installation. With ThermoFibra, the steel reinforcement in the sash is replaced by structural glass fibres. This allows the stop lip to be narrowed even further from 9mm – 7mm.

Innovative Solutions For Modern Architecture: Explore Our Commercial Case Studies

Deceuninck has played a key role in supporting numerous commercial specification projects across the UK, working closely with architects, developers, and contractors to deliver high-performance window and door solutions. Their expertise in compliance and sustainability has made them a trusted partner for developments in sectors ranging from residential and education to healthcare and mixed-use schemes.