Maximum Glass, Minimum Frame
Slim Cortizo aluminium sightlines flood the garden room with light and keep sightlines uninterrupted onto the garden.
For Garden Rooms · Made in Leeds
Cortizo aluminium bi-fold doors, sized and finished for garden rooms — with 5-day lead times on unglazed orders and fleet delivery anywhere in the UK.
5 Days
Lead Time
7,000mm
Max Width
1.4 W/m²K
U-Value From
2 – 7
Panels

Why Bi-Fold Doors for Garden Rooms
Garden rooms ask a lot of glazing — wide apertures, slim frames, good thermals and weather sealing for a structure that often sits exposed at the bottom of a garden. Our Cortizo aluminium bi-fold doors are spec'd to handle every part of that brief.
Slim Cortizo aluminium sightlines flood the garden room with light and keep sightlines uninterrupted onto the garden.
2 to 7 panel configurations with fold-in or fold-out swings, plus optional traffic door for everyday access without folding all panels.
U-values from 1.4 W/m²K — comfortably exceeds Building Regulations Part L for habitable garden rooms and outhouses.
Multi-point locking as standard, PAS 24 security accreditation available, and tested for water-tightness and wind resistance.
Delivered on our own fleet to a guaranteed date — to your garden room company, builder or directly to you.
Manufactured in Leeds to your exact opening dimensions, with low-threshold options for level access.
Sizes & Configurations
We manufacture aluminium bi-fold doors from 2 to 7 panels, with a max width of 7,000mm and max height of 3,000mm per panel. The table opposite is a quick guide to what panel count typically fits which garden room size.
If you're not sure, send your opening dimensions to our team and we'll recommend the right configuration for your garden room — including a traffic door for everyday access without folding the full set.
| Panels | Max Width | Typical garden room use |
|---|---|---|
| 2 | 1,800mm | Compact garden offices and pods |
| 3 | 2,700mm | Single-room garden rooms (most common) |
| 4 | 3,600mm | Family garden rooms and studios |
| 5 | 4,500mm | Open-plan garden rooms with corner glazing |
| 6 | 5,400mm | Large garden rooms and entertaining spaces |
| 7 | 7,000mm | Premium garden rooms — full rear elevation |
How It Works
From quote to delivered doors in as little as a week — direct from our Leeds factory to your garden room project.
01
Email your garden room opening dimensions, panel count and finish — or upload your drawings.
02
We'll come back with a fixed quote, lead time and an agreed delivery date.
03
Your bi-fold doors are precision-built at our Leeds factory using Cortizo aluminium.
04
Fleet delivery direct to your garden room project anywhere in the UK mainland.
Everything you need to know about our garden room bi-fold doors — pricing, sizes, lead times and more.
Send your sizes and we'll come back with a fixed quote and guaranteed delivery date within 24 hours. Trade and homeowner pricing — UK-wide fleet delivery from our Leeds factory.