Aluminium Bifold Doors: Sizes, Configuration, and Opening Options
Aluminium bifold doors are the folding door system most homeowners and architects pick when they want a wide opening that disappears completely into the wall. They fold neatly to one side, stack out of the way, and turn a whole wall into an open-air space in seconds.
This guide breaks down the sizes, panel configurations, and opening options you need to know before you order. Everything based on what we’ve seen work across 1,500+ project installs at Starveil.
If you’re specifying, buying, or just comparing options, this is the practical version. No fluff, just the numbers and decisions that actually matter.
1. What Are Aluminium Bifold Doors?
Aluminium bifold doors are multi-panel doors that fold and stack against one side of an opening, hinged leaf to leaf. Each panel runs on a track. The whole system glides open with light finger pressure, even on large door sets.
Aluminium is the material of choice for this door type. It’s strong enough to support tall and wide panels without needing any bulky frames. That means slimmer sightlines with more glass, which is exactly what most buyers want from a bifold system in the first place.
Compare that to timber, which sags under wide spans or uPVC, which struggles with panel height. Aluminium simply holds its shape better across large openings. And that’s why it dominates the exterior bifold market.
There’s also the weather side of things. A well-built aluminium frame, paired with a thermal break profile, keeps heat and cold from transferring straight through the metal. That matters more than people expect once you’ve got a full wall of glass sitting where a solid wall used to be.
2. Standard Aluminium Bifold Door Sizes
Standard aluminium bifold door sizes run from around 1200mm up to 6000mm+ in total width, and up to 2500mm in height. Though taller custom panels are possible on request. Sizing depends mostly on how many panels you choose and how wide each one is.
Panel Width Range
Each panel in a well-built aluminium system usually falls between 600mm and 1000mm wide:
- Go narrower and the door looks cramped.
- Go wider and the glass gets heavy
Heavier glass slows the rollers down over time.
Height Range
Most residential bifold doors sit between 2000mm – 2500mm tall. Sometimes commercial and villa-style projects push past that. Aluminium handles the extra height far better than uPVC or timber.
Quick Size Reference
Here’s a simple breakdown by panel count, based on typical aperture widths we work with:
| Panel Count | Typical Width Range | Best Suited For |
| 2 panels | 1200mm – 2400mm | Small openings, side entrances |
| 3 panels | 1800mm – 3600mm | Compact patios, balconies |
| 4 panels | 2400mm – 4800mm | Medium-to-large living room openings |
| 5 panels | 3000mm – 5400mm | Wide extensions, garden rooms |
| 6+ panels | 3600mm – 6000mm+ | Full-wall openings, commercial fronts |
These are working ranges, not hard limits. At Starveil, every bifold order is custom-cut to your exact aperture. So odd sizes and non-standard heights aren’t a problem.
3. Panel Configuration Options
Panel configuration decides how your door folds or where it stacks and how it looks day to day. Get this wrong and the door either blocks a walkway or looks unbalanced once installed.
Even vs Odd Panel Layouts
Even-numbered configurations (2, 4, 6 panels) fold in pairs and often stack symmetrically at both ends. This suits centre-opening designs.
Odd-numbered configurations (3, 5 panels) usually stack fully to one side. Thus, leaving the other side completely clear.
Choosing a Traffic Door
A traffic door is one panel within the set that opens independently, like a normal hinged door, without folding the rest of the system. It’s the single most useful feature for daily use.
- Saves you from opening the full stack just to step outside
- Reduces wear on the rollers and track over time
- Works well positioned at the end of the run, closest to the main walkway
Most homeowners skip a traffic door when they first order. Then wish they’d added one once the doors are in daily use. If you’re going in or out several times a day, then it’s worth the extra hinge.
4. Opening Options: In-Swing vs Out-Swing
Opening options for aluminium bifold doors come down to two choices which are in-swing and out-swing. They describe which direction the panels fold, and this decision affects both space planning and weatherproofing.
Out-Swing Bifold Doors
Out-swing doors fold outward, onto a patio or deck. This keeps your interior floor space completely clear, which most homeowners prefer for tight rooms.
In-Swing Bifold Doors
In-swing doors fold into the room. They’re common where outdoor space is limited or exposed to wind, since the panels aren’t sitting outside in the weather.
Stack Direction
Stack direction is simply which side the folded panels end up on: left, right, or split at the centre. A centre stack gives a symmetrical look and is popular for wide, feature openings.
5. Threshold Types That Affect Performance
Threshold type is where most bifold doors disappoint after installation, usually because the wrong one was picked for the site.
Standard Aluminium Threshold
This threshold offers the highest weather resistance of the three types. The trade-off is a small upstand, which can be a trip hazard for young children or elderly users.
Low-Profile Threshold
A low-profile threshold sits nearly flush with the floor, making step-over far easier for everyday use. It sacrifices a bit of weatherproofing compared to the standard option.
Flush Threshold
A flush threshold sits level with the finished floor, giving the smoothest possible transition for wheelchairs or general accessibility. It needs careful drainage design underneath, since there’s no upstand left to stop water at the door line.
Coastal or high-rainfall sites should lean toward the standard threshold. Everyday residential patios usually do fine with a low-profile option.
6. Aluminium vs uPVC vs Timber for Bifold Doors
Aluminium wins on strength with size capability and sightlines, but it helps to see the comparison side by side. If your opening is wide, gets heavy daily use, the extra upfront cost of aluminium tends to pay for itself in fewer callbacks and repairs.
| Material | Max Panel Height | Frame Sightline | Best For |
| Aluminium | Over 4 metres | Slim | Wide, tall, high-traffic openings |
| uPVC | Around 2.3 metres | Thicker | Smaller budgets, internal use |
| Timber | Moderate | Medium | Period homes, internal dividers |
7. Factors to Check Before You Order
A few quick checks before you place an order can save weeks of back-and-forth later. Run through this list with your installer, supplier so nothing gets missed at the measuring stage.
- Measure the exact aperture width and height, not the old door size
- Decide panel count based on width, not looks alone
- Confirm stack direction against your walkway and furniture layout
- Check thermal performance if you’re in a hot or cold climate, see the NFRC energy performance ratings for reference standards
- Ask your manufacturer about fitting tolerance, usually 10mm to 15mm
8. Why Order Aluminium Bifold Doors From Starveil
Starveil manufactures aluminium bifold doors from its own factory instead of through a trading middleman. That’s why your every custom size request goes straight to our production. That too, without any delays a reseller adds.
- 28 years of manufacturing experience, with 1,500+ completed projects worldwide
- Thermal break profiles built for hot and cold climates alike
- Free design drawings and 3D renderings before you commit to an order
- DDP shipping and on-site installation guidance across 118 countries
- Trusted on villa and hospitality projects, including work aligned with Marriott International standards
If you’re comparing suppliers, ask for a quote directly from the Starveil aluminium door range and you’ll get a same-factory answer within 24 hours.
Get Your Aluminium Bifold Doors
Picking the right aluminium bifold doors comes down to three most important decisions.
- Size
- Panel configuration
- Opening direction
Get these right at the drawing stage, then the rest of the installation will fall into place.
Ready to move forward? Request a free quote from Starveil and get expert help matching the right configuration to your opening, backed by our 28 years of factory-direct manufacturing experience.
FAQs
How much do aluminium bifolds cost?
Aluminium bifold doors typically cost more than uPVC per panel, mainly due to the material strength. Exact pricing depends on panel count, glazing type, and thermal specification.
Are aluminium bifold doors good?
Yes, aluminium bifold doors are considered one of the best option for wide openings because the frame stays strong even at large panel sizes. They also need very little maintenance.
What are the standard sizes of aluminium bifold doors?
Standard sizes range from around 1200mm to over 6000mm in total width, with panel widths typically between 600mm and 1000mm. Heights usually fall between 2000mm and 2500mm.
What are the disadvantages of bifold doors?
The main disadvantages are the stacking space they need when fully open and the higher upfront cost compared to a standard sliding door.
Ready to Get Your Project Started?
Get A Free Quote
