Our aluminium Bi Folding sliding doors will give your home individuality and character. A Bi-folding Door will open up a room to light and over a 90% clear opening, with flush floor levels from inside to outside. Bringing the outside inside and creating a functional and open space for living, working and entertaining. Bifolds give you a very aesthetically pleasing alternative to conventional Sliding Patio Doors.
We have been manufacturing made to measure aluminium bi-folding doors since 2005, and were officially the first UK Manufacturer to offer aluminium bi-fold doors to the trade. We are one of the UK's largest manufacturers of aluminium Bi-folding doors. With over 25 years of experience, a 10 year guarantee, competitive prices and specialised support its no wonder we are first choice for folding sliding patio doors.
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Our Durafold 1000 Aluminium Bi-folding Doors are our slimmest bifold doors. They have a fantastic range of colours including our Trend colour range and feature our fantastic Pendulum handle range. They slide and fold with ease and provide fantastic security.
| Material | Aluminium |
| Orientation | Open In or Out |
| Grey Gaskets | TBA |
| White Gaskets | TBA |
| Low Threshold Option | Yes |
| Slimness (mm) | 132 ¹ |
| Profile Depth (mm) | 74.5 |
| Energy Rating | N/A |
| U Value (W/M2K) | 1.7 ² |
| Max Width (mm) | 6250+ |
| Max height (mm) | 2400 |
| Air Permeability (Pa) | Pending |
| Water Permeability (Pa) | Pending |
| Wind Resistance (Pa) | Pending |
| Security | ![]() |
| Price | ![]() |
| Aesthetically Pleasing | ![]() |
Our Continental Folding Doors are made of strong, slim aluminium profiles, with high specification hardware. They give high weather performance and security. These are a very attractive alternative to conventional sliding patio doors.
| Material | Aluminium |
| Orientation | Open In or Out |
| Grey Gaskets | Available |
| White Gaskets | Available |
| Low Threshold Option | Yes |
| Slimness (mm) | 140 ¹ |
| Profile Depth (mm) | 70 |
| Energy Rating | N/A |
| U Value (W/M2K) | 1.7 ² |
| Max Width (mm) | 6250+ |
| Max height (mm) | 2500+ |
| Air Permeability (Pa) | 600 |
| Water Permeability (Pa) | 600 |
| Wind Resistance (Pa) | 2400 |
| Security | ![]() |
| Price | ![]() |
| Aesthetically Pleasing | ![]() |
Smarts Mullion Bi-folding Doors are tried and tested, and we have been manufacturing these aluminium Bifold doors since 2005. They have proven themselves to be hardwearing durable doors and due to their floating sliding mullion they slide with ease.
| Material | Aluminium |
| Orientation | Open In or Out |
| Grey Gaskets | N/A |
| White Gaskets | N/A |
| Low Threshold Option | Yes |
| Slimness (mm) | 185 ¹ |
| Profile Depth (mm) | 70 |
| Energy Rating | N/A |
| U Value (W/M2K) | 1.8 ² |
| Max Width (mm) | 6250+ |
| Max height (mm) | 2500 |
| Air Permeability (Pa) | 600 |
| Water Permeability (Pa) | 300 |
| Wind Resistance (Pa) | 1200 |
| Security | ![]() |
| Price | ![]() |
| Aesthetically Pleasing | ![]() |
¹ Sizes given are correct for the majority of door configurations, however some door styles require adaptor parts which may result in discrepances, please see our technical manuals for exact sizes.
² These statistics apply when using 90% argon gas filled (low-E, en=0.05, soft coat), 16mm or more warm edge spacer (1.2 Glass - centre pane* U-Value).
©2010 - 2012 Duration Windows. We reserve the right to change specifications in keeping with our policy of product development.