• Sunflex SF55 Thermally broken aluminium folding sliding door
  • Sunflex SF55 Thermally broken aluminium folding sliding door
  • Sunflex SF55 Thermally broken aluminium folding sliding door

Sunflex SF55 - Aluminium Folding Sliding Doors


The SF55 is part of a revolutionary new development designed to shape the future of the folding sliding door market. Not only does it provide a minimal profile width of only 55mm providing a discreet stacking area, in addition to narrower sightlines maximising glass area, it boasts of a 24mm patented shaped polyamide thermal break. These unparalleled factors make the SF55 the slimmest, most weather tight, secure and reliable system available.

The advanced technology used ensures that not only does it exceed current building regulations but any other stringent changes likely to be set in the future. With triple continuous gasket seals the system provides an unrivalled (certificated) severe weather rating. This system is suitable for any external domestic or commercial application and will, without a doubt, continue to lead the market for many years to come.

  • Exceeds current and future Doc L Building Regulations
  • Suitable for any domestic, commercial and public sector application
  • Unrivalled severe weather rated. Tested and certified (900Pa water tightness)
  • Narrow and sleek sightlines and styling for a contemporary look
  • Discreet hinges
  • Minimal finger safe cushion gaskets
  • Approved by the British Insurance Association
  • Virtually maintenance free

All our Sunflex aluminium systems are supplied with a high quality factory finish as standard. The standard available finishes for the Sunflex range of aluminium systems are Silver anodised or polyester powder coated White RAL 9016, Aluminium RAL 9006, Grey Aluminium RAL 9007 and Anthracite Grey RAL 7016. All handles are specially designed to complement the door system; standard colours are Black RAL 9011, White RAL 9016, Grey Aluminium RAL 9007, Anthracite Grey 7016 or Standard Silver. Gaskets are in Black with hinges mounted within seal sightline available in black or white. A Marine environment finish that is required to all systems within 5000 metres of a shoreline. A finish for chemical/swimming pool environments is also available.

Other RAL colours (over 200 colours available). Even different colours to the inside and outside (dual colour) or different wood grain effects are available for a nominal charge. These can be applied to the handles and hinges if required. In addition you can specify whether a semi-gloss, gloss or matt level of paint finish is required. Download the finishes page for more information.

The profile of the revolutionary SF55 is constructed from a strong aluminium extrusion, which has been thermally broken by a 24mm polyamide insulation bar, guaranteeing it optimum resistance to combat heat loss and condensation. The minimal framework is offered as a (WE) square edge profile. All framework is assembled with patented moulded corner blocks and the panels are machine mitred at the corners rather than the cheaper butt jointed alternatives. Each panel is connected to the next panel/outer frame by a minimum of 3 slim line hinges, ensuring an even, continuous seal around the perimeter of each door panel.

Available with two choices of track, the standard stepped weathered track for severe weather rating or the flush track for added safety and convenience. The aluminium flush track can be recessed into the floor to provide a level walkthrough with an uninterrupted floor finish, compliant to Building Regulations Doc M for disabled access.

Single door fitted with multi-point locking system with five lever key-locking cylinder, incorporating either a latch for convenience, mushroom headed ESPAG bolt and shootbolts top and bottom (Handle in horizontal position when closed) or mushroom headed ESPAG bolt and shootbolts top and bottom (Vertical position in-line with door frame when closed).  All intermediate and slave doors are fitted with internal flush handles only to operate a shootbolt mechanism, key locking facility available for additional internal security depending upon requirements. The locking system is incorporated within the framework within each intermediate panel, operated by an internal flush handle. The shoot bolt rods are manufactured in aluminium and linked by a corrosion resistant cam. In addition, they are capped with polyamide cones that prevent any metal damage to the tracks when locking, whilst compressing the panels tight against the top and bottom seals.

A five-lever Euro profile cylinder key lock, approved by the Association of British Insurers with handles is also fitted to the end lead door or single pass door where there are an odd number of panels, or to the first opening pair, in an even number of panels. Again as a bespoke system these can be fitted to either the inside only or both internally and externally as required. By integrating the locking cylinder into the existing profile in this way eliminates the need for an additional add-on profile familiar with other sub standard systems, ensuring all sightlines remain minimal and symmetrically the same.

Locking hinge pins & internally glazed - For further improved security the entire range of Sunflex folding sliding door systems are internally glazed as standard, with external centre secured locking hinge pins and interlocking panels.

Optional added security - Where required additional cylinder key locks can be added at every intermediate handle point for higher security. Mortice locks can also be fitted where a latching position is required for added convenience. As an alternative to mortise locks, a multi-point ESPAG lock can be fitted. As well as providing a latching position this also offers the additional benefit of multi-point locking throughout the height of the system. Panic locks can be fitted for fire escapes, etc. Sunflex also offers electric latch release locks and roller ball latch locks for commercial use.

There are triple continuous gasket seals between the door panels. To offer superior quality the gaskets are made from long lasting EPDM and even continue behind the hinges. The unique design of these self sealing gaskets, combined with the centre bubble gaskets provide a minimal sightline while providing a cushion to minimise the effect if fingers were to be trapped.

Weather seals (weathered track) - creates a severe weather rated system by providing a perimeter double-rebated seal. (The system achieves DIN 18055, Category C performance for wind loading and water leakage.)

Weather seals (flush track) - the bottom seal between the door and the flush track is via double, twin nylon brush piles separated by a twin fin seal, giving an effective seal. It is recommended that some form of a sunken drainage channel and a slope away from the doors be integrated, to avoid any pooling of water.

Designed predominately to be bottom running, the stainless steel running mechanisms consists of four wheels, manufactured from tough glass fibre reinforced polyamide, set around a maintenance-free sealed ball-bearing, giving a quiet, smooth operation with optimum resistance to extreme weather and temperatures fluctuations. Each wheel and guide mechanism can carry up to 200 kilograms. The advanced pioneered technology in this system is designed to be completely fitter friendly and upon installation enables the height of the system to be easily adjusted with the simply use of an Allen key. Self-lubricating collar type bearings provide quiet operation without squeaking hinges.

Both the handles and hinges are made of cast alloy. The handles are sprung loaded and specially designed to be flush fitting to enable door panels to stack flat when fully opened. Large ‘D’ handles and automatic door closures can be fitted if required, for commercial instances. Trickle vents of either 5000mm2 or 2500mm2 can also be incorporated within the head profile.

Pull handles - when the folding door system opens externally the intermediate panels are fitted with a moulded ‘D’ shaped handle this is attached to the internal hinge between two even panels and sits neatly within the gasket line enabling easy closure of the panels against the compression top and bottom gasket seal

Design options - the SF55 can be tailored according to your design and specification. Options include mullion/transoms, plant on bars, deeper top and bottom rails and solid infill panels. To compliment the folding sliding door a full range of matching profile thermally broken aluminium windows and doors are available.


PO Box 1266
Lincoln
Lincolnshire
LN5 5PY

Tel: 01522 869 679
Email: info@parkfarmdesign.co.uk