The natural beauty of timber or high performance of aluminium? With timber-clad aluminium bifold doors, you can enjoy both. It's the perfect marriage of real wood on the internal face of the door and low-maintenance aluminium outside.
A great choice for traditional properties or adding character to new builds and extensions, these SUNFLEX composite bifold door systems provide the ideal combination of hard-wearing aluminium to the outside and solid timber cladding to the inside.
These highly engineered SUNFLEX timber-clad aluminium bifold doors are manufactured for us exclusively in Germany. They are available in a choice of timbers, profiles and finishes to match the style of your room.
Unlike other composite folding doors, the SUNFLEX SF55c and SF75c systems are aluminium doors with internal timber cladding (rather than timber systems with external aluminium fascia) and share all the same design features and innovation of the award-winning SF55s and SF75 systems.
The SUNFLEX SF55c and SF75c bifold doors share significant manufacturing and design characteristics including tracks, sight lines, finishes, weather performance and unique features. Where they differ is in their thermal performance with the SF75c designed specifically to accommodate a triple glazed unit and capable of achieving an industry-leading low U-value of just 0.8W/m2K (based on a centre-pane of 0.5W/m2K) making the doors suitable for projects being constructed to Passivhaus standards.
Security is of paramount importance and, as with all of our bifold doors, the SUNFLEX SF55c and SF75c systems hold the coveted Secured by Design Award. The scheme aims to reduce crime by ensuring the effective design and installation of products to meet police-approved security standards.
The Secured by Design award sets the recommended police specification for security for a wide range of products, with the concept being that a house built using products that have security at the heart of their design will mean a reduction in crime. The scheme, celebrating its 30th anniversary this year, provides a useful minimum standard for those considering extensions or self-build home projects.
SUNFLEX SF55c and SF75c timber-clad bifold doors are available with a range of timber types, cladding styles and finishes to suit almost any project. Select from Nordic Pine, Meranti, American White Oak, Larch or Douglas Fir and then choose a timber cladding style and finish to complete personalise your doors.
The internal timber cladding on our composite bifold doors can be finished in a range of Sikkens wood stains, oils or even paint finishes to complement internal beams or structures of your home. Choose from one of three cladding styles with our ‘moulded profile’ providing an intricate details, the ‘plain profile’ offering a rounded traditional style and the ‘squared profile’ perfect for creating a clean contemporary design.
PLEASE NOTE: Whilst every effort has been made to display the timber choices and stain options accurately the images shown should be used as an indication only. We can supply samples of various timbers and/or timber finishes if required, simply email us at info@idsystems.co.uk or call 01603 408804.
All SUNFLEX bifold doors are fitted with unique running carriages that mount to the door frame rather than the hinge. This provides the smoothest operation, enhanced security and neat visual appearance.
The superior quality of our products, combined with the high standards of our installation team, enable us to offer a full ten-year warranty* on our systems and workmanship. The IDSystems' guarantee is also fully transferable if you decide to sell your home.
*Exclusions apply, please contact us for full details of warranty policy.
MORE
Please send us your details, along with measurements for the opening, and we'll get back to you with a quote.
Unlike other composite doors on the market where timber doors are clad with aluminium, the structure of SUNFLEX composite doors is aluminium with a section of timber cladding attached to the inner face of the door, so they are not susceptible to warping, twisting or rotting.
The bifold door panels can be made up to 1200mm (SF55c) or 1100mm (SF75c) wide and 3500mm high, width the maximum overall panel size dictated by the glass specification and the weight of the sealed unit.
The SUNFLEX SF55c bifold door has a thermally broken aluminium frame on the outside to match your windows, and a timber cladding inside to match the look of your room. You can enjoy the benefits of low-maintenance aluminium and the natural beauty of wood in aluminium bifold doors.
Continuing on from the success of the SF75, the SUNFLEX SF75c has evolved to offer the best in thermal efficiency β an extremely low U-Value eco-friendly bifold door system. This market-leading system provides the lowest in CO2 emissions associated with reduced energy consumption and considerable savings in heating bills.
Having narrow sight lines maximises the view. Our composite bifold doors have 118mm sightlines, fractionally wider than the 115mm of the SF55s and SF75 aluminium systems because of the internal timber cladding.
118mm
118mm
The internal timber cladding adds 20mm to the inside face of the aluminium door frame, increasing the frame depth compared to the SF55s and SF75 systems
75mm
95mm
We offer a choice of timber for the internal cladding of the composite systems.
Standard - Meranti is a durable hard wood whilst Nordic Pine is a knot-free softwood.
Optional - American White Oak, Larch or Douglas Fir
2 standard (Meranti or Nordic Pine) plus 3 optional (American White Oak, Larch and Douglas Fir) choices
2 standard (Meranti or Nordic Pine) plus 3 optional (American White Oak, Larch and Douglas Fir) choices
Choose a style of cladding to match the internal finishes of your project. The Moulded profile provides a more intricate detail, the Traditional profile offers a nicely curved finish or the Squared profile is a clean contemporary design.
3 - Moulded, Traditional or Squared
3 - Moulded, Traditional or Squared
Choose from a wide range of Sikkensβ’ wood stains, with the choice of having different stains or even paint finishes available for interior and exterior surfaces also available.
Range of stains, paint or oiled (oak only) finishes
Range of stains, paint or oiled (oak only) finishes
The external frames of our composite doors are available in a range of standard colours, alternatively you can select from an almost infinite choice of optional colours and finishes.
Standard β Anthracite Grey (RAL 7016) semi-gloss, White Aluminium (RAL 9006) semi-gloss, Grey Aluminium (RAL 9007) semi-gloss, Traffic White (RAL 9016) semi-gloss and Anodised Silver. Optional - More than 200 RAL colours and finishes are available as an optional extra
Standard β Anthracite Grey (RAL 7016) semi-gloss, White Aluminium (RAL 9006) semi-gloss, Grey Aluminium (RAL 9007) semi-gloss, Traffic White (RAL 9016) semi-gloss and Anodised Silver. Optional - More than 200 RAL colours and finishes are available as an optional extra
Thermal performance of the doors is measured as a U-value. When comparing products it is crucial to compare the overall U-value of the system and not just the U-value of the sealed glass unit. The SUNFLEX SF75 timber-clad aluminium bifold doors can achieve a U-value from just 0.8W/mΒ²K (based on a centre-pane of 0.5W/mΒ²K), making them suitable to projects being constructed to Passivhaus standards.
Double glazed: from 1.1W/mΒ²K.
Triple glazed: from 0.8W/mΒ²K.
Because our composite doors are made from an aluminium frame (rather than timber) our panel sizes are the largest of any composite door system on the market.
Width: up to 1200mm. Height: up to 3500mm
Width: up to 1100mm. Height: up to 3500mm
Whilst the majority of bifold doors are installed in an outward opening configuration, inward opening doors are ideal for use with balconies or with small courtyard gardens.
Inwards or outwards opening, stacking to one end
Inwards or outwards opening, stacking to one end
The gaskets that seal the panels of the doors together when closed, providing a weather-tight seal, are made from an incredibly durable, synthetic EPDM rubber.
Continuous triple rebated gaskets
Continuous triple rebated gaskets
Separating the external and internal aluminium frames of the door the polyamide thermal breaks prevent cold bridging, increasing the thermal performance of the system.
Patented 24mm polyamide thermal break
Patented 44mm multi-chambered polyamide thermal break
Our bifold doors include shoot bolt locks that extend from the lead door and intermediate panels into the top and bottom of the track, whilst the lead door features a mushroom head lock into the side jamb.
Multipoint locking with shoot bolts hidden in the top and bottom of the door panels and mushroom head lock on lead door.
Multipoint locking with shoot bolts hidden in the top and bottom of the door panels and mushroom head lock on lead door.
PAS 24:2016 is the testing standard for security required to comply with Building Regulations Document Q. P1a glass (usually laminated glass) specification is required to meet Building Regulations Document Q approval.
Yes
Yes
The Secured by Design award marks the police preferred security specification for windows and doors
Yes
Yes
Double glazing is a minimum requirement for external doors and windows. Our standard double glazed units consist of a soft-coat Low-E (low emissivity) pane and argon gas-filled cavity which provides a centre pane U-Value of 1.2W/m2K. Over the standard, we can provide super-insulated double glazed units providing a centre pane U-Value of 0.5W/m2K whilst providing solar control.
Triple glazing is becoming increasingly popular, especially in total new builds, as it provides the lowest U-Values possible and can be up to 40% more efficient than double glazing. Combining two panes of Low-E glass and two gas-filled cavities, glazing U-Values as low as 0.5W/m2K are possible with the added benefit of great sound reduction.
Double glazed only
Triple glazed only
Every set of doors and windows undergoes independent physical testing to assess the ability of the systems to withstand air and water. Water tightness is tested against BS EN 12208 standard with air permeability tested against BS EN 12207 standard.
Water tightness: 900Pa (Class 9a). Air permeability: 600Pa (Class 3)
Water tightness: 900Pa (Class 9a). Air permeability: 600Pa (Class 3)
Our bifold doors come with a choice of track options. Non-weather rated flush tracks are only typically recommended for internal or sheltered urban locations. Low-threshold tracks have 14mm upstands are ideal for urban or rural locations, with our fully weathered tracks designed for rural or exposed locations.
3 β flush, low-threshold or weathered track
2 β low-threshold or weathered track
A truly unique and innovative feature, the SUNFLEX locking panel catch holds the lead door of the system in place when the doors are being opened, preventing the door from swinging shut.
Yes
Yes
Unique to SUNFLEX bifold doors, the exclusive stacking clip holds the doors securely in place when they are stacked open, stopping the wind (or young children) closing the doors unexpectedly.
Yes
Yes
The running gear of our composite bifold doors are designed to offer effortless operation, however large the panels and however wide the opening.
Concealed stainless steel running gear connected to the frame of the doors
Concealed stainless steel running gear connected to the frame of the doors
The integration of a moveable corner post allows the doors to open up a complete, unobstructed corner of a room
Yes, for 90Β° or 135Β° corners
Yes, for 90Β° or 135Β° corners
We are able to fit integral Venetian blinds within the glazed unit, ensuring a totally dust-free environment which requires no cleaning or maintenance. These are very popular, especially on internally opening systems where curtains are not practical.
Integrated blinds can be tilted to help prevent the build-up of excessive heat and glare of the sun during the daytime and provide privacy when closed. Blind units are manually operated with an ingenious magnetic control device.
Optional
Optional
The requirement for trickle vents to provide background ventilation can be a requirement of Building Regulations Document F, depending on the type of project you are undertaking. IDSystems trickle vents are installed through the head track of the outer frame if required.
Optional
Optional
Tinted anti-sun glass: Reducing solar gain, available in blue, green, grey or bronze.
Neutral anti-sun glass: Neutral in colour with reflective properties to reduce solar gain.
Self-cleaning glass: Reduces the need to clean the glass, very useful in roofs.
Obscure glass: Our satin deco is a stylish solution for areas requiring privacy.
Low-iron glass: Improves the light transmittance through the glass while providing some free energy.
Options available: Tinted anti-sun glass, Neutral anti-sun glass, Self-cleaning glass, Obscure glass and Low-iron glass
Options available: Tinted anti-sun glass, Neutral anti-sun glass, Self-cleaning glass, Obscure glass and Low-iron glass
For new-build homes or for change of use projects (barn conversions etc) we fit laminated glass as standard to meet the requirement for P1a glass as specified by Building Regulations Document Q for security. For all other projects (extensions, replacements or renovations etc) we fit toughened glass to comply with Building Regulations Document N.
Toughened glass
Toughened glass has been heat tempered to increasing its strength over ordinary annealed glass by up to five times. Other than the strength the advantage of toughened glass is that should it break it would shatter into non-sharp pieces. It is also available with the widest variety of coatings and can be supplied in larger sheets than equivalent thickness laminated glass.
When the glass is toughened it can suffer from some visual distortion making, meaning the face of the glass is not perfectly flat distorting some reflections.
Laminated glass
Laminated glass is manufactured by bonding two panes of annealed glass with a clear plastic interlayer. The benefit of laminated glass is that if itβs broken the glass will crack rather than shattering, improving security. In addition, laminated glass reduces bleaching of carpets, curtains and furniture by filtering UV rays that would usually penetrate the glass.
The drawback of laminated glass is that extreme heat or cold can cause invisible defects in the glass to form a crack due to the two panes expanding and contracting independently. As the laminated glass is not toughened is does not suffer from the visual distortion that can occur to toughened glass during the toughening process.
Toughened or laminated glass
Toughened or laminated glass
MORE