Technical information notice. Website information is general trade guidance, not a certification, compliance statement, design calculation or order confirmation. Before relying on a figure or standard, request current evidence for the selected product route, size, glazing, hardware and project.
Trade supply
Supply-Only Aluminium Bifold Doors for the Trade
If you fit your own work and just need the bifolds made right, this is the supply-only route. We fabricate thermally broken aluminium bifold doors to your sizes and configuration, finish them, and hand them over ready for your team to install. You manage the install, we make sure the units land correct, square and on spec. Send drawings or sizes and we quote against your aluminium bifold door requirement.
Lead time confirmed at quote, never a guess. Pricing per project, never a stock figure.
VITRINEALU LTDCompany number 12927857.
Fabricated in Haydock, St HelensTrade-only supply from our own workshop.
Trade enquiriesSend drawings or sizes to discuss a quote.
What supply-only means here
Supply-only means we fabricate and supply the finished bifold doors and you handle the fit. No installers turn up, no project management on your site. You send the opening sizes and the configuration you want, we specify the right route, quote it, build it and have it ready for collection or delivery.
It suits installers, builders, joiners and shopfitters who are confident on the fix and want a reliable fabricator behind them. You stay in control of the programme and the customer relationship. We carry the fabrication and the spec, so what arrives is the unit you signed off, made to BS EN 14351-1 with UKCA and Declaration of Performance support where it applies.
The spec you can configure
Bifold doors are configured per opening, not picked off a shelf. Tell us the leaf count and the split you want, which way it stacks, the traffic door position, and we set the sash sizes around it. Thermal, security, sightlines and threshold all get specified to the job.
- Thermal: whole-unit Uw from 0.9 W/m2K where specified, confirmed per finished unit at quote. See how the numbers work in our guide to aluminium U-values.
- Security: PAS 24 product routes available where the job calls for it, with multipoint locking on the traffic leaf.
- Sightlines: slim thermally broken profiles to keep glass area up and frame down across the run.
- Thresholds: weathered upstand or low-line options depending on whether you are after performance or level access.
- Glazing: double or triple glazed units accommodated from 22mm up to 58mm depending on the system.
- Acoustic: to Rw 46 dB where specified, useful on roadside and exposed elevations.
- Finish: powder coated to your RAL, single colour or dual colour inside and out, matt, satin or textured.
Sizes and structural opening
Get the structural opening and the head detail right and the rest follows. We set leaf widths and weights so the doors run true and the panels do not foul. Heavier glass makes-up and wider leaves both pull on the maximum dimensions, so we check the run against the system limits before we quote.
Maximum sash sizes vary by system and glass weight, so confirm your opening early. Our guide to aluminium door and window maximum sizes shows the limits to design within, and if your opening is over-height or over-width we will tell you the route before you commit on site.
What to send for a fast trade quote
The more you give us up front, the tighter and quicker the quote. We can work from a sketch with sizes, but a clear drawing removes the back and forth.
- Structural opening sizes, width and height, and whether they are measured or target sizes.
- Leaf count and configuration, the stack direction and where you want the traffic door.
- Threshold preference, weathered or low-line level access.
- Glazing spec and any acoustic or solar requirement.
- Finish, the RAL and whether it is single or dual colour.
- Whether you are collecting from Haydock or want it delivered, and your rough programme date.
Collection from Haydock or delivery
Collect from our unit at Nassau Business Park in Haydock, St Helens, or we arrange delivery out across the North West. Either way the doors are protected for transit and come with the glass, hardware and threshold matched to the order.
Lead times are confirmed per project at quote, so you can plan your fix date around a real date rather than a guess. If you are running several plots or a phased job, tell us the sequence and we will work the supply to suit. The bifold sits alongside the full range, so if a plot also needs a slider or screens we can quote it together.
Open a trade account
Regular supply works best on an account. Open one through our trade account application and you get a single point of contact, drawings checked before fabrication, and consistent spec across repeat jobs.
Got sizes ready now? Send them through the trade quote route and we will come back with the configuration and price. Homeowners reading this should use our find an installer route, as we supply the trade rather than sell or fit direct.
Common questions
Do you fit the bifold doors or is this strictly supply-only?
Strictly supply-only. We fabricate and supply the finished aluminium bifold doors to your sizes and you carry out the install. We are a trade fabricator, so we do not fit. Homeowners are routed to a vetted installer through our find an installer page.
What U-value can the bifold doors hit?
Whole-unit Uw from 0.9 W/m2K where specified, confirmed per finished unit at quote. The figure depends on the glass make-up and configuration, so we confirm it against your job. Our guide to aluminium U-values explains how the numbers are arrived at.
Can the doors be made to a PAS 24 security route?
Yes. PAS 24 product routes are available where the job calls for it, with multipoint locking on the traffic leaf. Tell us at quote stage if PAS 24 is required so we specify the correct route from the start.
How do I get a quote and what do you need from me?
Send structural opening sizes, leaf count and configuration, threshold preference, glazing and finish through our trade quote route. A drawing speeds it up but a clear sketch with sizes is enough to get started.
Can I collect from you or do you deliver?
Both. Collect from our unit in Haydock, St Helens, or we arrange delivery across the North West. The doors are protected for transit and supplied with glass, hardware and threshold matched to your order. Lead times are confirmed per project at quote.
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