Aluminium bi-fold
Up to seven panels, opening in or out, with a master door for everyday use.
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Our services
Bi-fold & Sliding Doors
Browns specialise in slim-frame aluminium bi-folds and large-pane lift-and-slide doors. The right system depends on your opening, the view you want to frame and how the door will be used day to day.
What we do
A closer look.
Bi-folds give you a fully open wall — ideal where you want the room and garden to flow into each other in summer. Lift-and-slide systems prioritise the view, with large panes of glass that stack rather than fold.
Every system is structurally surveyed so we can confirm the head and threshold heights, drainage and any steelwork before quoting. Where required we'll work alongside your builder on knock-throughs.
All systems are thermally broken with multi-point locking and come with smooth-running gear that's serviced as part of your guarantee.
Recent installations
A few we've done lately.
What we offer.
Lift-and-slide
Two or three large panes — perfect for framing a view with minimum interruption.
Slim sliding patio
Inline sliders with 20mm sightlines for a near-frameless look.
Corner-opening
Bi-folds that open around a structural corner with no corner post when stacked.
The detail
Technical spec.
- Sightlines
- from 20mm (slider) / 70mm (bi-fold)
- Max panel size
- up to 1.2m wide × 2.5m tall
- Threshold
- Standard or low-level (Part M)
- Guarantee
- 10 year insurance backed
Case studies
View full portfolio →Recent bi-fold & sliding doors projects.
Bridport
Kitchen extension bi-fold
Four-panel anthracite aluminium bi-fold across a new kitchen extension, gable apex glazing above for extra light.
Sandbanks, Poole
Lift-and-slide patio
Three-pane anthracite lift-and-slide system framing the garden view from a contemporary lounge.
Lyme Regis
Six-panel garden bi-fold
Six-panel aluminium bi-fold opening onto a new patio with a low-level threshold for level access.
Ready to start your bi-fold & sliding doors project?
Tell us about your project online and we'll come back within one working day with a free, fully-itemised quote — no pressure, no hidden extras.
Other services.
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Energy-efficient uPVC, aluminium and timber-effect windows. Casement, tilt-and-turn, bay and bow — designed and made to measure.
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Solid-core composite front doors that look like timber but won't warp, fade or rot. Multi-point locking as standard.
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Bespoke garden rooms, orangeries and lean-tos with thermally efficient glass roofs — useable all year round.
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