Visofold 1000 Bifold Doors Technical Details
Our aluminium bifolding doors are constructed using Smart Systems VISOFOLD 1000 folding sliding door system. The door has been designed to eliminate the requirement for mullions between the panels and produces very slim sight lines of just 132mm. Doors are manufactured using Polyamide thermally broken aluminium profiles for superior insulation and durability and the system uses bespoke aluminium extrusions specifically designed for folding sliding doors to ensure effortless operation for years to come.
Why choose aluminium bifold doors?
Aluminium folding sliding doors are strong and durable with slim sightlines and can be specified to open in or out. The Smart Systems Visofold 1000 Bi-fold door system uses dedicated aluminium profiles to produce a door that has simple clean lines and offers maximum visible glass areas.
Easy to Operate
Our bi-folding doors slide effortlessly using bottom fitted dual rollers running on a dual track and also have the benefit of nylon guide rollers at the top which ensures positive and easy movement of the individual door panels during the fold and slide operation. The doors have internal fold flat handles and D handles to intermediate panels together with lever/lever handles to traffic doors. A magnet retaining catch is supplied with doors that provide a traffic door to prevent the hinged door leaf self closing.
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| 4 Wheel Roller Hinge | Bottom Hinge |
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| Traffic Door Handle* | Internal Handles |
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| Magnetic Retainer(Traffic door only) | 132mm Sight Line |
*Traffic door handle style may vary if RAL colour handle option is required
High Security Locking Standard
Our folding doors are fitted with high security locking systems to ensure your peace of mind. For doors without a traffic door operation of the shoot-bolt locking system is only accessible from the inside using the key operated lockable meeting stile twist handles. Doors with a traffic door will have a lever handle operated multi-point hook lock system fitted similar to a normal entrance door. The handle also includes a profile key cylinder deadlock facility which is accessible from both inside and outside enabling a conventional entrance door facility without opening up the complete door.
Staycool Solar Control Glazing 1.1 U-value
STAYCOOL double glazing is now standard on all our aluminium folding sliding doors offering an exceptionally low 1.1 U-value ensuring maximum heat is retained in the colder months of the year. The solar control benefits of STAYCOOL also provide shelter from direct sunlight in the summer by reflecting 57% of direct heat from the sun and reduce glare by 35%. STAYCOOL is a neutral solar control glass and does not have a coloured tint.
Overall U-value
A Visofold 1000 door specified with our standard Staycool double glazing would acheive an overall 1.5 U-value and easily acheive Doc L 2010 building regulations compliance which require a 1.8 U-value of less. Please note however that the actual overall U-value for a specific door will vary depending on the style and options chosen. Further reductions in the U-value of our bifold doors is possible but would require the use of a different glazing specification such as Krypton gas and/or triple glazing at extra cost. If you have a specific requirement please contact us for a quotation.
Visofold 1000 Bifold Door Glass Sight lines
For panels moving in the same direction the sight line is 132mm. Where a traffic door meets folding sliding panels the sight line is 179mm and where two meeting stiles connect on 2/2(centrally split 4 panel)and 4/2(6 panel doors)the sight line is 216mm.
Visofold 1000 Bifolding Doors - Technical Data
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Minimum Door Width (incl outerframe) |
1800mm |
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Maximum Door Width (incl outerframe) |
6000mm* |
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Minimum sash size |
650mm |
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Maximum sash size |
1000mm |
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Maximum sash weight |
100kgs |
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Maximum Door Height |
2500mm** |
*Bifold doors wider than 6 metres available on request.
**Maximum height dependant on installation location.
Download profile sight lines and technical details for Visofold 1000 Bifold Doors.
Outer Frame Head
Weathered Threshold
Recommended for external applications.
Low Threshold
Designed for internal applications the 20mm non-weathered low threshold can be sunk into the floor if required or used in conjunction with the optional wheelchair ramps shown here.
Outer Frame Jamb
Hinged Meeting Stiles
Lock Meeting Stile
Projecting Cill Options
150mm or 190mm cills are available
Frame Extender
Supplied for fitting to the top of the door when trickle vents are specified.
Trickle Vents
Trickle vents are fitted to the frame extender as shown here.
Threshold options can be viewed here
View the most common questions asked about our bifolds on our FAQ page
Visofold 3000(Panorama) and Visofold 4000(Mullion) Bifold Doors
We can also supply Visofold 3000 and 4000 series aluminium bifold doors - please ask for a quotation. To view the differences in sight lines you can download the Visofold series brochure.
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