• Sunflex SF55c Thermally broken alu-wood folding sliding door
  • Sunflex SF55c Thermally broken alu-wood folding sliding door
  • Sunflex SF55c Thermally broken alu-wood folding sliding door

Sunflex SF55c Alu-Wood Composite Folding Sliding Doors


The Sunflex SF55c has been developed to shape the future of the bi folding patio doors market. Not only does it provide a compact profile ensuring a small stacking area, in addition to narrower sightlines maximising glass area. It boasts of a 24mm patented shaped polyamide thermal break This combined with its severe weather rating, makes it the most weather tight, secure and durable folding doors systems available.

By offering the very best of both worlds the thermally broken aluminium to the outside can match in with the remainder of your windows and the internal timber clad can match the look of your room. You no longer need to compromise - enjoy the benefits of the low-maintenance and thermal efficiency of aluminium and the natural beauty and warmth of wood. The advanced technology used ensures that not only does it exceed current building regulations but any other likely stringent changes in the future.

  • Exceeds current and future Doc L Building Regulations
  • Suitable for any domestic, commercial and public sector application
  • Unrivalled severe weather ratings
  • Tested and certified (900Pa water tightness)
  • Narrow and sleek sightlines and styling for a contemporary look
  • Revolutionary slim profile with discreet hinges
  • Full range of track options, finishes and opening configurations
  • Lightweight construction
  • Minimal finger safe cushion gaskets
  • Approved by the British Insurance Association
  • Virtually maintenance free

External - the standard available finishes for the external aluminium are polyester powder coated White RAL 9016, Aluminium RAL 9006, Grey Aluminium RAL 9007, Anthracite Grey RAL 7016 and silver anodised. All handles are specially designed to complement the door system; standard colours are Black RAL 9011, White RAL 9016 Anthracite Grey RAL 7016 or Standard Silver. Gaskets are in Black with hinges mounted within seal sightline available in White RAL 9016 or Black RAL 9011. A Marine environment finish that is required to all systems within 5000m of a shoreline or chemical swimming pool environment is also available.

Internal - the natural character of wood is perfectly preserved by using Sikkens micro-porous water based wood stains (i.e. they contain no harmful solvents) in a variety of stain colours. Or alternatively the timber can be paint finished to any RAL colour (over 201 RAL colours available). As standard, Sunflex timber door systems are fully finished, which consists of one basecoat and two topcoats; other finishes are available upon request. Each section is individually dip treated, ensuring equal coverage over all surfaces, protecting the timber against rotting and water penetration. All handles are specially designed to complement the door system; standard colours are White RAL 9016, Black RAL 9011, Standard Silver, Grey Aluminium RAL 9007 or Anthracite Grey RAL 7016. Gaskets are in black with hinges mounted within seal sightline available in White RAL 9016 or Black RAL 9011.Other RAL colours (over 201 colours available).. These can even be applied to the handles and hinges if required. In addition you can specify whether a matt, semi-gloss or gloss level of paint finish is required. Stainless steel handles also available. Download the finishes page for more information.

External - the profile is constructed from a strong aluminium extrusion. The minimal framework is offered as a (WE) square edge profile.

Internal - the SF55c benefits from the strength and stability provided by the aluminium and combines it with the natural charm and beauty of timber to the inside, providing the very best of both worlds and with a choice of timber profile chamfered (plain) or feature (moulded). All timber is sourced from sustainable forests: the standard timbers are Meranti (hardwood) and Nordic pine (knot free-softwood), while other timbers such as American White Oak are available by special order.

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.

As standard the doors provide a very high level of security, with an effortless, quick, smooth and natural operation. It consists of a two-point top and bottom shoot bolt mechanism with additional central locking point to the end Lead door. The locking system is incorporated within the framework of each intermediate panel and operated by a specially designed 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 twin 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 double-rebated perimeter seal with continuous triple gaskets. The SF50c system achieves DIN 12206-11-air permeability class 4, water tightness class 9A (900Pa) and wind resistance class 4.

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


PO Box 1266
Lincoln
Lincolnshire
LN5 5PY

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