Bi-Folding Doors — Built to Last
Grewal's bi-folding doors transform any space — connecting interiors to exteriors or opening up entire walls for unobstructed access. Manufactured in-house from premium-grade aluminium with advanced glazing, our systems are available in two-to-eight-panel configurations up to 8 metres wide, in over 200 RAL colours, with manual or remote-controlled operation.
Whether you need a single unit or a multi-site rollout, our team handles everything from initial survey through to final sign-off — with UK-wide coverage and fast turnaround times backed by a full workmanship guarantee.
What Makes It Stand Out
Every bi-folding doors from Grewal is engineered to perform and built to last.
Full-Width Opening
Panels fold completely back on themselves, creating a fully unobstructed opening — ideal for connecting indoor and outdoor spaces.
Maximum Natural Light
Large glass panels flood interiors with natural light, eliminating the dullness of solid walls and creating an open, airy feel.
Remote Control Operation
Fully motorised systems with remote control, smart locking and optional integration with building management systems.
High-Security Locking
Concealed multi-point locking systems prevent unauthorised access. The hinges and running gear are hidden when the door is closed.
Thermally Broken Option
Thermally broken frames with insulated glass units provide superior U-values for energy-efficient residential and commercial use.
Custom Sizes Up to 8m
Panel widths from 600mm (residential) to 800mm (commercial), in systems from two to eight or more panels — up to 8m wide.
Available Types
Choose the configuration that fits your premises, security level and budget.
Top-Hung Folding
Suspended from an overhead track for smooth, silent operation. Requires a strong lintel but leaves a clean floor-level finish.
Bottom-Running Folding
Weight carried by a bottom track — easier to retrofit and ideal for areas where overhead load-bearing is limited.
Corner Bi-Folding
Opens up entire corners of a room or building — removes corner posts entirely for a truly panoramic, modern opening.
Frameless Glass Bi-Fold
Toughened glass panels with no visible vertical frames — the ultimate minimalist design with clear, unobstructed views.
Product Specifications
Where We Install
Our bi-folding doors solutions are trusted across a wide range of commercial and industrial settings.
How It Works
Contact Us
Free, no-obligation consultation to discuss your requirements.
Site Survey
Our engineers visit to measure and plan precisely.
Manufacturing
Built in-house to your exact specification.
Installation
Professional, tidy fitting — tested and signed off.
Bi-Folding Doors Gallery
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