Double-Glazed Folding Doors
At Dasco Entrance Technology, we design, manufacture, supply and install commercial doors for offices, retail units, schools, hospitals and public buildings. Our commercial door installation service includes industrial double-glazed folding doors.
Order a high-performance entrance system tailored to your building. Contact us to start discussing the requirements for your external bi-fold doors.
Our Folding Doors for Commercial Premises
At Dasco ET, we build and install commercial double-glazed folding doors for businesses across Glasgow and wider central Scotland. Our double-glazed folding doors are entrance doors made up of hinged panels that fold and stack to the side. They create a wide opening between indoor and outdoor spaces in commercial buildings.
With over a decade of experience, we’re a SafeContractor™ certified member of the Automatic Door Suppliers Association (ADSA). As an experienced double-glazed folding door manufacturer, every door is made to measure, with size, finishes and other specifications engineered around your building’s needs.
Bi-Folding Doors for Commercial Entrances
Our bi-folding doors pivot in sections, with each panel stacking neatly against the next. They can be configured with two to seven panels, depending on the width of your opening. This design saves space compared to a standard swing door. Our folding doors are automatic, opening by sensor or the press of a button.
These doors require space to stack when fully opened. We confirm this space during your site survey to make sure the folding doors fit your layout. Single-door configurations open to one side, which suits narrower commercial entrances.
Bi-fold doors can be configured with a multi-point locking system, securing the door to its frame at three or more points simultaneously. It can also be set up with a primary traffic door, letting staff and visitors use a single leaf for everyday access without opening the full set.
This entrance system design offers a high glass-to-frame ratio for better views across the panel run, creating a wide opening between indoor and outdoor spaces. This suits showrooms, cafés and reception areas that benefit from an open layout.
Bifold doors can be top-hung or bottom-rolling:
Top-hung bi-fold doors need a strong lintel, since the full weight of the panels hangs from the head of the frame.
Bottom-rolling systems carry the weight along a floor track.
The choice between bi-fold and other door types affects space use. Planning permission isn’t usually required for bi-fold doors, though building regulations may apply depending on your project type.
Security & Safety Features
Double-glazed folding doors offer better security than older door designs. Internal glazing beads stop glass removal from outside, closing off a common weak point of older folding systems.
Our doors are fitted with a 3-star cylinder lock that meets British Safety Standards, alongside multi-point locking and high-security hardware, giving you confidence in the durability of the finished installation.
Automatic bi-folding doors are also a practical option for compliance with the Equality Act 2010, supporting accessible entrances for staff and visitors.
Thermal Efficiency of Bi-Fold Doors
Double glazing provides enhanced energy efficiency with insulating glass. Bi-fold doors can be double- or triple-glazed for improved thermal efficiency, depending on your project. Folding doors reduce heat loss and can lower energy bills across a commercial building.
| Glazing option | Thermal performance | Best suited to |
| Double | Insulating glass unit reduces heat loss | Most commercial premises & standard openings |
| Triple | Enhanced thermal & sound insulation | High-spec projects & sensitive or listed buildings |
Good thermal insulation maintains a consistent indoor climate. This helps keep reception areas, retail floors and office buildings comfortable throughout the year. These door types also improve sound insulation compared to single glazing, which helps premises near busy roads or in mixed-use developments. Glazing options and frame materials for folding doors impact their energy efficiency and cost, so we discuss specification during the enquiry and estimate stage.
Double- and triple-glazed folding doors let in plenty of natural light, while providing improved UV protection, helping protect flooring, stock and furnishings from sun damage. The glazed panels perform much like windows, filling reception rooms and nearby spaces with daylight. This increases natural light throughout the working day and can transform commercial spaces that previously relied on smaller, fixed windows.
Aluminium doors engineered for durability and a slim, contemporary profile deliver sleek contemporary finishes for modern commercial frontages. For period or heritage-sensitive properties, traditional styles are more suitable.
Modern bi-fold doors can significantly enhance a property’s kerb appeal and can increase the value of a commercial property over time. Folding doors create a seamless indoor-outdoor experience for commercial spaces such as café terraces, showroom frontages and hospitality venues.
Our Process
We keep every folding door project simple and transparent, from first enquiry to handover. Our team will guide you through every stage, from specification to installation, so you’re always in the loop.
Enquiry & estimate
Onboarding
Site survey
Parts order
Manufacture
Delivery
Installation
Invoicing
Get a full service from a reliable team. Trust us to manufacture, supply, install and maintain your door systems.
Other Commercial Door Options From Dasco
Alongside bi-folding doors, our range of automatic door products includes:
We also supply aluminium shopfronts and steel doors for back-of-house and warehouse entrances.
As a SafeContractor™ certified member of the ADSA, we apply the same quality standards across our full range of commercial door systems.
FAQs About Double-Glazed Folding Doors
Top-hung folding doors need a strong lintel to carry the weight of the panels. Bottom-rolling systems carry the weight along a floor track, so lintel requirements are less critical for this configuration.
Our folding doors feature multipoint locking systems as standard, along with a 3-star cylinder lock that meets British Safety Standards. High-security hardware, including hinges, and internal glazing beads add further protection.
Folding doors can sometimes be installed in listed buildings, but separate consent is usually required before any external opening is altered, and each case is assessed individually by the relevant local authority. We recommend checking with your local planning authority before placing an order.
Bi-fold doors require space to stack when fully opened, with panels folding back against one side of the frame. We confirm the exact space needed during your site survey.
Speak to a SafeContractor™-certified double-glazed folding door supplier about your project. Request a quote to get started.
