What Support Does a Folding Door Need Above the Opening?
One of the questions we hear regularly from customers is:
“Can I install the folding door directly into my plaster ceiling?”
The answer is that the track can potentially be installed where a plasterboard or plaster ceiling is already finished, but the track cannot rely on the plasterboard or plaster itself for structural support.
The folding door tracks need to be securely fixed to a suitable structural head or supporting structure behind the ceiling.
This is particularly important because the doors are supported by the tracks and travel along them when they are opened and closed. The weight of the door system is therefore carried along the track path.
If you are planning a folding, concertina or accordion door installation, the most important thing to establish early is:
What is actually behind the ceiling or wall finish where the track needs to be installed?
Can a Folding Door Be Installed Into a Plaster Ceiling?
This is a common situation, particularly in commercial fit-outs and renovated spaces.
You may have a finished plasterboard ceiling with no obvious timber beam or frame visible from below, and you may want the folding door to run directly beneath that ceiling.
In some situations, this can absolutely be done.
However, the important distinction is that the plasterboard itself is not the structural support for the folding door track.
There needs to be suitable structural material behind the plasterboard so that the track can be securely fixed.
Depending on the building and the design, this could be timber framing, an LVL beam, steel framing or another appropriately designed structural member.
Australian Folding Doors supplies the folding door system and can advise on the weight of our doors and the requirements of our track system.
We are not structural engineers, builders or building certifiers, however, and we cannot specify what structural modifications a particular building requires.
The building owner, builder, engineer or other appropriately qualified professional needs to determine what structural support is suitable for the individual project.
Why Can't the Track Simply Be Screwed Into Plasterboard?
This is one of the most important points to understand.
Plasterboard is primarily a lining or finishing material. It is not intended to carry the structural load of a folding door system simply because a screw can be driven into it.
The folding door track needs to transfer the load into something capable of supporting it.
Think of the track as the load-bearing path for the door.
As the doors move along the track, the weight of the door system is carried by the track and transferred into the structure supporting that track.
So if you have a plasterboard ceiling underneath a timber or steel structure, the plasterboard can remain as the finished surface — but the track fixings need to reach and securely connect with the appropriate supporting structure behind it.
In simple terms:
Plasterboard = surface finish material / finished surface
Structural framing / beam = support
Track = carries the folding door
Door = travels along the track
That distinction is important when planning an installation.
The Structural Support Needs to Follow the Track
Another point that can sometimes be overlooked is that the support isn't only required at one or two points.
The folding doors travel along the track, so the supporting structure needs to accommodate the track path.
Imagine a large opening with a folding door travelling from one jamb to the other.
The track runs across the opening.
The structural support needs to be suitable along that run so that the track can be securely fixed and supported.
This becomes even more important on larger openings or where multiple folding doors are being installed.
For example, if a project has:
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one long folding door covering a large, wide opening
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two doors meeting at a 90-degree corner
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multiple doors dividing a large room
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four doors meeting towards the centre of a room
Each required track path needs to be considered.
This is one reason why structural planning should happen before the ceiling is closed up, wherever possible.
If you're considering multiple doors, including doors meeting at a 90-degree corner, we've also looked at folding doors around corners and how straight-track configurations can be planned.
What Happens in a Timber-Framed Opening?
Timber-framed openings are generally straightforward for folding door installation when suitable framing has been provided.
If the opening has a properly constructed timber head, the folding door track can be fixed into that supporting structure.
This is one of the simplest situations because the structural framing is already part of the opening.
For a new construction or renovation, the builder can take the proposed folding door track location into account when constructing the opening.
This is particularly useful because the finished plasterboard can then be installed around the completed structural opening.
The end result is a clean finished appearance while the track remains securely fixed into the appropriate structural member behind the lining.
What About Steel-Framed Openings?
Folding doors can also be installed into steel-framed openings.
The important consideration is that the track needs to be securely fixed to the appropriate steel framing or structural member.
There is one practical difference worth knowing about when ordering from Australian Folding Doors.
Our standard fixing screws supplied with the doors are intended for timber applications.
If the track is being installed into steel, the customer or installer will need to source suitable screws or fasteners for the particular steel framing being used.
The appropriate fastener will depend on the steelwork and the installation.
Again, this is something the builder or installer should determine based on the actual structure.
What If There Is No Timber Frame Above the Opening?
This is where things get more interesting.
Sometimes a customer wants to divide an area that wasn't originally designed as a doorway.
For example, there might be a large open area with a plasterboard ceiling but no traditional timber-framed doorway.
In that situation, the opening may need to be provided with additional structural support before the folding door can be installed.
One approach we have commonly seen builders use for wider openings is an LVL beam across the opening.
LVL stands for Laminated Veneer Lumber and is an engineered timber product commonly used for structural applications. Bunnings, for example, currently stocks LVL beams in a range of dimensions.
The important point isn't that a particular LVL size is suitable for every folding door.
The appropriate beam size and structural arrangement depend on the opening, span, building construction and loads involved and should be determined by the builder or appropriately qualified professional.
From the folding-door perspective, the objective is simply to have a suitable structural head along the required track path so that the track can be securely fixed.
Can a Pre-Made Door Frame Be Used?
For smaller openings, another possibility is a pre-made or adjustable door-frame system, provided it is appropriately constructed and capable of supporting the folding door track.
Bunnings and other building suppliers offer various door-frame and framing products that can be used as part of building an opening, depending on the application.
The exact frame needs to be selected and installed for the specific structural requirements of the opening.
For a small opening, this can potentially provide a relatively straightforward way of creating a suitable framed opening.
For wider commercial openings, however, we have more commonly seen builders create the required structural head using engineered timber such as LVL or another suitable structural solution.
Again, the builder or engineer needs to determine what is appropriate for the particular opening.
What About Steel Beams?
Steel beams can also provide structural support for a folding door track.
There is nothing inherently wrong with having the track fixed to suitable steelwork.
The main practical consideration is installation.
Unlike timber, the installer may need to pre-drill the steel to accommodate the required screw fixings, depending on the type and thickness of the steel.
With heavier or thicker structural steel, this can make installation more time-consuming.
The actual fixing method should be selected by the installer or relevant construction professional based on the steel structure being used.
The Wider the Opening, the More Important the Planning Becomes
A small internal doorway and a large commercial room divider are very different installation scenarios.
As the opening gets wider, the structural support above the opening becomes increasingly important.
A large folding door can span a substantial opening, but the building still needs to provide an appropriate structure for the track to be attached to.
This is why we recommend considering the folding door before the opening and ceiling construction is finalised, particularly on new commercial projects.
It gives the builder and other project professionals an opportunity to make sure the necessary structural provisions are incorporated into the design.
What About a Folding Door Installed Under an Existing Ceiling?
This is a situation we encounter regularly.
A customer may have an existing finished room and want to add a folding door to divide it into two areas.
There may already be plasterboard above the proposed opening.
That doesn't automatically mean the project can't be done.
The first question is simply:
What is behind the plasterboard?
If there is suitable structural framing in the correct location, the track may be able to be fixed through the plasterboard into that structure.
If there isn't suitable support, the building may require additional structural work before the folding door can be installed.
That is where the customer should involve their builder or another appropriately qualified professional.
What Information Should You Give Your Folding Door Supplier?
When you're asking about a folding door installation, it helps to provide more than just the opening width.
Useful information includes:
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opening width
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opening height
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photographs of the opening
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photographs of the ceiling
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whether the opening is timber framed
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whether it is steel framed
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whether the ceiling is plasterboard
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what is above the ceiling
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whether there are beams or structural members
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where you want the doors to stack
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whether the door is single or bi-parting
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whether there are multiple door tracks
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whether there are services or fixtures near the opening
Photos can be particularly useful because they can give the supplier a better understanding of the environment before discussing the door configuration.
Don't Forget the Jambs and Door Stack
Structural support above the opening isn't the only thing that needs to be considered.
The jambs also need to provide suitable locations for the door's starter brackets.
And when the door is opened, the folded panels need enough room to stack or park without hitting walls, fixtures, furniture or other obstructions.
This is particularly important when a folding door is being installed into an existing room.
A track might physically fit above an opening, but the overall installation can still be affected by what is located around the track and stack areas.
That's why we recommend looking at the whole door path, not just the opening itself.
What About Multiple Folding Doors?
The same principle applies when several folding doors are being used together.
For example, we have discussed configurations where:
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two folding doors meet at a 90-degree corner
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multiple doors divide a large room
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four folding doors come together towards the centre of a space
Each track has its own path.
Each path needs appropriate structural support.
Each door also needs sufficient clearance to operate and stack.
The more complex the configuration, the more important it becomes to consider the structural and spatial requirements before installation.
Australian Folding Doors Can Advise on the Door — Not Engineer Your Building
This is an important distinction we want customers to understand.
Australian Folding Doors is a folding door supplier and manufacturer.
We can provide information about:
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our door systems
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door dimensions
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door weights
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track requirements
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configuration options
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stacking arrangements
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installation considerations
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the type of fixing supplied with our doors
What we cannot do is specify the structural modifications required to make an individual building suitable for a folding door.
For example, we can't tell a customer:
“You need a 240 × 45 LVL across this opening.”
That would require consideration of the actual building, span, loads, structure and relevant construction requirements.
Instead, we can tell the customer what our door and track require, and their builder, engineer or other appropriately qualified professional can determine how the building should provide that support.
This is a much safer and more accurate way to approach a project.
Planning a Folding Door? Think About the Structure Before the Plaster Goes Up
If you're building or renovating a space and know that you want to install a folding door, it's worth discussing the requirement before the ceiling and wall linings are finished.
Once the plasterboard is installed, the structural members behind it are no longer visible.
Planning the track location early gives the builder an opportunity to provide suitable support exactly where it is needed.
This can be particularly valuable for:
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new commercial fit-outs
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schools
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offices
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community centres
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sports clubs
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modular buildings
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renovations
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large residential projects
It can also make the eventual installation cleaner and more straightforward.
A Folding Door Track Needs Something Solid Behind It
The simplest way to remember the principle is:
The plasterboard isn't what holds the door. The structure behind it does.
The folding door is supported by its track.
The track needs to be securely fixed.
The fixings need to connect to suitable structural support.
And that support needs to extend along the path where the track runs.
Whether that support is timber framing, LVL, steel framing or another structural solution is a matter for the builder or appropriately qualified professional to determine.
Australian Folding Doors can then manufacture and supply the folding door system to suit the agreed opening and configuration.
Frequently Asked Questions
Q: Can a folding door be installed directly into a plasterboard ceiling?
A: A folding door track can potentially be installed beneath a plasterboard ceiling, but the plasterboard itself should not be relied upon as the structural support. The track needs to be securely fixed into suitable structural support behind the ceiling.
Q: Can folding doors be installed into timber framing?
A: Yes. Folding doors can be installed into suitably constructed timber-framed openings. The track needs to be securely fixed to the appropriate structural framing.
Q: Can folding doors be installed into steel framing?
A: Yes. Folding doors can be installed into suitable steel framing. The installer will need to use appropriate fixings for the particular steel structure. Australian Folding Doors supplies timber screws as standard, so suitable steel fixings need to be sourced separately.
Q: Can an LVL beam support a folding door?
A: An LVL beam can potentially form part of the structural support for a folding door track. However, the appropriate size and structural arrangement must be determined for the individual building and opening by the builder, engineer or other appropriately qualified professional.
Q: Can a folding door be installed under an existing plaster ceiling?
A: Potentially, yes. The important question is what structural support exists behind the plasterboard where the track needs to be installed. If suitable support isn't present, additional structural work may be required.
Q: Does the whole folding door track need structural support?
A: The track needs to be securely supported along its required installation path. The exact structural arrangement depends on the building and should be determined by the appropriate construction professional.
Q: Can Australian Folding Doors tell me what structural beam I need?
A: We can provide information about the weight of our doors and the requirements of our track system, but we don't provide structural engineering advice or specify structural modifications to buildings. Your builder, engineer or other appropriately qualified professional should determine the structural solution for your project.
Q: Can folding doors be installed into a steel beam?
A: They potentially can be, provided the beam and fixing arrangement are suitable. Installation may require pre-drilling and appropriate steel fixings, depending on the type and thickness of the beam.
Final Thoughts
Structural support for any type of folding doors, concertina doors or accordion doors need to be carefully considered before a door is ordered.
The weight of the door system is carried by the track and transferred into the supporting structure along the track path.
A plasterboard ceiling alone should not be relied upon to support the folding door track and door system. The track needs to be securely fixed to suitable structural support behind the ceiling.
While Australian Folding Doors can assist in assessing photos of openings and the type of concertina doors suitable for an application in residential and commercial applications, it is essential that a qualified, license builder is appointed to confirm the structural requirements to bear the weight of any type of door being installed.
Contact us, and speak with one of our specialists will help assess your project and requirements.
For more information on our company and products as well as useful guide on Concertina / Folding Doors, please visit our other pages:
• Our Concertina Folding Door Range
• Our Residential Concertina Door Applications
• Our Commercial Concertina Door Applications
