Aluminium Bifold Doors

SL97 Timber/Aluminium Folding Glass Doors

This door is particularly notable for its excellent thermal insulation. Laminated wood profiles with a building depth of 96 mm, an additional level of insulation, and triple glazing result in a U-value of 0.80 W/m²K, can enable the system to meet passive house standards. A wide range of opening system variants is available. The system has three sealing levels to provide shelter from the wind and rain, while the aluminium covers on the outside protect the wood profiles from weathering.

bifold door

Thermal Insulation (in W/m2K):

Uw up to 0.80


Triple Insulating Glass:


Wood Types;

Standard pine, spruce + others

More Info

Available in a variety of timber options, our SL97 timber/aluminium folding glass doors are designed to be environmentally friendly. We offer you the opportunity to use materials from sustainable forestry sources in the construction of your doors. All of our components are tested to ensure that they meet our eco-friendly standards. Get in touch today to discuss quotes for a project involving our SL97 timber/aluminium folding glass doors.

Technical Specifications

Dimension (in mm) Opening Versions Gaskets
Element thickness 96
Bifold door
Weather protection Aluminium cover
Glass thickness (min) 24
Sustainable forestry Optional
Glass thickness (max) 46
Float glass 3 x 4

Features & Benefits

Sustainable Materials

Our SL97 timber/aluminium folding glass doors are constructed with sustainability in mind. We offer wood from sustainable forests and water based glazes, with all components tested to make sure that they are environmentally friendly.

Thermal Insulation

With triple heat insulating glass as standard, our SL97 timber/aluminium folding glass doors will be sure to keep any property warm. Our concertina doors are constructed with an additional insulation layer which creates a U-value of just 0.80W/m2k – the best of our Visiline bifold door range.

Excellent Lifespan

Our SL97 timber/aluminium folding glass doors include a triple wraparound seal to prevent rain and wind ingress. With an aluminium cover as weather protection inside their profile, these SL97 timber/aluminium folding glass doors will stay in the optimal condition for a decades to come.

aluminium sliding doors supplier

Connect With Us!

You can fill out a quick and easy online contact form to receive a quote for our SL97 timber/aluminium folding glass doors. Alternatively, give us a call on 0800 612 6519 to find out more information about our design, supply and install process from our Gloucestershire based team of Visiline product specialists. Book an appointment to come and see one of our showrooms to help you make an informed decision. Our Find A Showroom tool will help you to find the nearest one to you in England or Wales.

Extra Features


These timber/aluminium bifold doors can specified to your exact requirements. From handle upgrades to other visual and security enhancements, our entire Visiline range can be tailored to the specific needs of any residential renovation or new build project.

Find Out More
Window Hardware Installers Gloucestershire

Case Studies

Read our case studies to see how we have installed our doors in other properties. See the before and after of our installation process and how our doors are able to transform any building.

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Minimal Frame Aluminium Windows Gloucestershire


Located across England and Wales, our showrooms can help you to cement your current ideas or come up with new ways to upgrade your project. Use our Showroom Finder tool to discover the nearest one to you.

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sliding door showroom

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