Door Style · Concertina, Full Opening
Bi-Fold Doors
Bi‑fold doors concertina to one or both sides, opening the entire wall to the garden. Up to 6 leaves and 6m of clear span. Thermally‑broken aluminium, made in Westmeath.
Bi‑fold doors fold and stack to the side, opening the full width of the opening — the whole wall disappears. They’re the spec when you want a true indoor‑outdoor space: a kitchen extension where the patio is part of the room in summer, or a snug that opens to a courtyard.
Wright Windows manufactures aluminium bi‑fold doors at our Milltownpass factory. Configurations up to 6 leaves, with a single‑leaf traffic door option for everyday use without opening the full set. Thermally‑broken aluminium frames, multi‑point locking and 100s of colour options.
- Up to 6 Leaves
- Single Traffic Door Option
- Multi-Point Locking
- Made in Westmeath
How They Work
Leaves hinged in pairs, folding to one side.
Each pair of leaves is hinged together, and runs on a top‑hung track. Pull the lead leaf and the whole assembly concertinas across the opening, stacking neatly to one side (or both if symmetric). When closed, the leaves sit flush against a continuous weather seal and lock together with multi‑point gearing.
Most configurations include a single‑leaf ‘traffic door’ that opens and closes independently — so you don’t have to slide the entire wall every time someone goes out to the garden. Configurations: 3+0, 2+1, 3+1, 4+0, 4+1, 3+2 and so on, depending on opening width.
Why Bi-Fold
Key Benefits
- Full opening width. The whole wall opens — not just half.
- Traffic door option. Use one leaf as a standard door for everyday access.
- Up to 6 leaves. Single‑run spans up to around 6m wide typical.
- Multi‑point locking standard. Toughened safety glass and concealed gearing.
- Slim aluminium frame. Thermally broken for A‑rated thermal performance.
Available Materials
Bi‑Folds, in Aluminium
Bi‑fold gearing is engineered around aluminium — the frame strength to weight ratio that makes the leaves work properly. We don’t recommend bi‑fold in uPVC or timber.
Specifications
Configurations & Sizes
Configurations
2 to 6 leaves. Stack to one side or both. Typical layouts: 3+0, 2+1, 3+1, 4+1. Lead leaf can be specified as left or right.
Max Span
Typically up to around 6m total run on a 6‑leaf system, depending on leaf height and weight.
Hardware
Top‑hung running gear, multi‑point shoot‑bolt locking, thermally‑broken aluminium, drained sill.
Best Suited For
Where bi‑folds win.
- Kitchen extensions where the patio becomes part of the room in summer.
- Open‑plan living rooms onto landscaped gardens or decks.
- Modern bungalows and contemporary new builds with full‑wall rear elevations.
- Properties where the “full opening” matters more than slim sightlines (vs sliding).
- Spaces wanting a single‑leaf traffic door for daily use without sliding the whole stack.
Recent Work
Bi‑Fold Project Gallery
Bi‑Fold Doors FAQ
Common Questions
Bi‑fold or sliding — which is better?
Different tools. Bi‑folds give you full opening across the whole span — ideal when the indoor‑outdoor connection matters. Sliding doors have slimmer sightlines when closed and no folded leaves visible when open, but only ever half (or two‑thirds) of the opening is clear. For an extension that’s open all summer, bi‑fold. For an apartment view that’s closed most of the year, sliding.
What’s a traffic door and do I need one?
A traffic door is a single leaf in the bi‑fold set that opens and closes on its own hinge, like a normal door, without unfolding the rest. Most owners want one — it means you can pop out to the garden without sliding the whole stack. Specified as part of the configuration at quote stage.
How wide can a bi‑fold door span?
Typically up to around 6m total run on a 6‑leaf system. Larger spans are possible with multiple sets. Maximum leaf weight is the limit — large triple‑glazed leaves reduce the number of leaves a system can support.
Are bi‑fold doors energy efficient?
Yes — modern thermally‑broken aluminium bi‑folds with triple glazing meet A‑rated thermal targets. The continuous compression seal around each leaf and at the meeting stiles is the key.
Ready to quote your bi‑fold doors?
Visit the Milltownpass showroom to operate a working set, or request a free no‑obligation quote.
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