SL 97: the lowest U value of any bi-folding door in the UK market

Solarlux, the definitive market leader in glass door and glass element technology, would like to introduce the SL 97, a revolutionary glass folding door with the lowest U value in the UK market today. Technically superior, triple glazed and constructed from timber and aluminium, the SL 97 provides a premium solution for energy efficiency.

Energy efficient

With increasing environmental awareness and the rising costs of energy, more emphasis is now being placed on ways to save energy in all types of domestic, commercial and public buildings. Government regulations specifying minimum requirements for the energy efficiency of new homes are being gradually tightened to achieve zero carbon by 2016.

The SL 97 provides optimal thermal insulation and is the ideal solution for future building regulations and carbon reduction, with laminated wood profiles 96 mm in depth, an additional insulation layer and triple glazing. Surpassing the current building standards at 1.5, SL 97 bi-folding doors achieve passive house standard, with a U value of just 0.80 W/m2 K.


The SL 97 is not only energy efficient, but also eco-friendly, using water-based glazes and sustainable materials. Each component is rigorously tested to ensure it is environmentally friendly; parts are mechanically connected to each other, which means they can be separated easily for recycling. All wood is FSC or PEFC certified and the timber framework can be responsibly sourced from sustainable forests, at the customers’ request.


Elegant and sleek the SL 97 is aesthetically gratifying. A wooden interior finish creates a warm and comfortable atmosphere, and a wide range of wood colours provides exclusive design variants.

Exterior aluminium cladding provides extensive weather protection and minimises any maintenance requirements. Espagnolettes with a thickness of 24mm throw lock the panels into the top and bottom track of the frame, securing the doors against gale force winds.

An integrated multi-point locking system and door handle with catch bolt, lock and profile cylinder guarantee high levels of security. Even after installation, the SL 97 can be easily width-adjusted with its movable hinge.

The use of top-quality, high-grade steel for the runners ensures that the SL 97 glides back effortlessly, with numerous folding options – inwards, outwards, or to the left or right. The SL 97 creates open spaces, as well as facilitating a natural indoor/outdoor flow, giving the feeling of living in the middle of the countryside.