Sunflex SF75 - Aluminium Folding Sliding Doors


The Sunflex SF75 is the most thermally efficient system available in the market and therefore the most environmentally friendly and thermally efficient. A 44mm thermal barrier represents the very latest in technological breakthroughs. Triple glazed with a high performance 48mm unit provides an overall u-value less than 1.0W/m2K, simultaneously reducing your carbon footprint keeping your energy bills low. Minimal narrow sightlines ensure maximum glass area and pleasing aesthetics, without compromising the severe weather rating (900Pa Water tightness). The SF75 is constructed around a state of the art design with guaranteed high performance and continued long term durability.

  • Surpasses 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)
  • Sleek narrow sightlines and contemporary styling
  • Stainless steel running gear
  • Minimal finger safe cushion gaskets
  • Approved by the British Insurance Association
  • Virtually maintenance free
  • Lightweight construction
  • Simple assembly

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.

As standard the SF75 comes factory glazed with high performance triple glazed units. Currently the most thermally efficient and eco friendly folding sliding door on the market without compromising narrow sightlines and a contemporary style. Manufactured with performance and efficiency in mind with no compromise on robust and quality materials.

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.

Night vent locking position - a unique feature on the system is that the shoot rods can be locked into a second position on the tracks, allowing partial opening for continued ventilation whilst leaving the doors securely locked.

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.

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

Weather seals (weathered track) - severe weather rated system is achieved with the weathered track option, providing a perimeter double-rebated seal, with continuous triple gasket seals. The system achieves EN12206-11 – Air permeability Class 4, Water tightness Class 9A (900Pa), Wind resistance Class 4.

The SF75 is predominately designed to be a bottom running system. 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