Frameless Slide and Fold Doors. Your Questions Answered

Frameless Glass Curtains of Chatham manufacture their own system of frameless slide and fold doors.  These doors have a minimal aluminium frame and maximum glass area.  Frameless slide and fold doors are designed to be suitable for internal or external use and available as a single or double glazed product.

The double glazed system is widely used in external applications where a modern slide and fold glass door is required. Just like a conventional aluminium bifold, frameless slide and fold doors are secure and weather resistant.

How do frameless slide and fold doors work?

frameless slide and fold doors in new extension
Frameless slide and fold doors provide a secure, weather resistant and slimline option to bifolding doors.

Frameless slide and fold doors utilise an aluminium frame at the top and bottom. The system is designed to be slim and features no visible mullions. Within the outer frame sit the individual door panels. These independently slide and then hinge outwards, folding together just like a bifold.


Is a frameless slide and fold door only for new openings?

The outer frame depth of a frameless door ranges from 61mm to 70mm deep. With most original windows and doors designed around a 70-75mm frame, a frameless slide and fold door is suitable as a replacement for old windows and doors as well as new build applications.

Are frameless doors slimmer than other folding doors?

On a frameless door, the top frame is only 44mm deep and the bottom track 40mm deep. This is nearly half the depth and visible sight line of conventional aluminium bifolding doors.

The door rails are 55mm wide, again making them slimmer than most aluminium doors on the market.

The frameless doors feature no visible mullion when each door panel meets in the closed position.

How do frameless slide and fold doors stay secure?

On a frameless slide and fold door it is only possible to access the locking mechanism from the inside. Doors feature a secure, key operated handle that cannot be operated or accessed from the outside.

A simple unlocking of the key and a turn of the handle releases the master door ready for operation. Best of all, frameless slide and fold doors do not require the intermediate handles found on aluminium bifolds to keep the central panels secure.

When the frameless doors are locked, turning the handle pushes all the door panels together to provide security across the entire door set. At the same time, the doors have a weather proof seal.

Are frameless slide and fold doors energy efficient?

A quality glass door consists of a large amount of glass. Frameless slide and fold doors utilise a patented system with high specification glass units. Other bifolding doors are glazed with conventional glass units with warm edge plastic spacer bars. Frameless glass doors use a glass spacer bar on the vertical edges of the glass units.

All frameless glass doors with double glazed units are insulated products meeting or exceeding the requirements of current Building Regulations. The aluminium frames used in a frameless glass door are also thermally insulated.

Are frameless doors top or bottom hung?

The bottom hanging arrangement on bifolding doors has established itself as the most reliable weight-bearing method. Frameless glass doors slide on a purpose-designed wheel system with the majority of the door panel weight being at the bottom. This offers a safe operation as well as a smooth one. No additional reinforcement of the door profiles is needed.

How does each panel work on a frameless slide and fold door?

Each door panel has an aluminium section at the top and bottom. The doors are connected to the track using a flag and spacer profile that slides within the frame. The bottom track of a frameless door has a specially designed turning mechanism. This tells the user precisely where the doors stop sliding and are ready to fold open.

Can frameless doors be configured to suit each property?

Just like a bifolding door, frameless slide and fold doors can open in or out. They can slide to the left or the right. There is flexibility in having door panels stacking to one side or split to stack on both sides. The traffic door found on traditional aluminium bifolds is also possible.

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