SF70 Technical

Dimensions

The manufacturer recommends panel widths do not exceed 1100mm and a maximum height of up to 2800mm. Heights greater than this can be achieved, please contact our technical department for advice. The system can cater for very large openings - up to 25 metres with 12 panels in any each direction.

Fixed glazing can be built above the door system. Where this is required for wider openings, strengthening profiles are incorporated within the door framework to aid lateral stability.

Profile

There is a choice of profiles from the WS (softline/rounded) edge to the WE (square) edge to meet your own design requirements and to match with any conventional aluminium or UPVC systems.

Track options

There are two choices of track; a standard weathered track for a severe weather rated system or, for added convenience and improved safety, a flush track recessed into the floor. This provides a level walkthrough with an uninterrupted floor finish, compliant to Doc. M of the Building Regulations for disabled access.

In any exposed location we would always recommend the use of a weathered track. When used with an outward opening door a weathered track can be fully recessed below your internal floor level meaning that there is no threshold to trip over, just a step down to the outside. An external deck or paving can be brought up to the track on the outside giving a very minimal diference in levels whilst maintaining a weather tight seal.

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Security

The standard locking system offers a very high level of security with a quick, smooth and easy operation. It consists of a two-point top and bottom shoot bolt mechanism, which is incorporated into the framework within each intermediate panel. For improved security all Sunflex folding door systems are internally glazed as standard with centre secured locking hinge pins and interlocking gaskets.

Where there are an odd number of panels, a five-lever profile cylinder is fitted to the end lead door; or to the first opening pair in an even number of panels. It can be fitted to either the inside only or both internally and externally, meeting the requirements of the Association of British Insurers.

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  • 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 damage to the track when locking, whilst compressing the panels tight against the top and bottom seals.
  • Throughout the range of Sunflex folding systems you have the option of internal and/or external handles. Handles are fitted to every intermediate door panel and additional locks can be added at these points for higher security. For single access doors or on the lead door of folding sets, a mortice lock can be fitted where a latching position is required for added convenience. Additional mortise locks can be fitted to the top or bottom of the door if required, or you can add multi-point locking.
  • There are further enhanced security options available and panic locks can be fitted for fire escapes, etc. Sunflex also offers electric latch-release locks and a rollerball latch lock for commercial use.

Partial opening

A unique advantage over the competition is that the shoot rods can be locked into a second position, allowing partial-opening for ventilation or night vent position whilst leaving the doors securely locked.

Integrated tilt and turn window

Should the folding doors be the only means of ventilation within a room, a full height tilt and turn window can be incorporated within a door panel, enabling the window to be tilted inwards for ventilation or in the turn position provide easy access to the outside. This is particularly useful for bedroom locations.

Weather seals

The Sunflex 70 system is a severe weather rated system when used with the weathered track option, providing a top and bottom double rebated seal. Unique double gaskets are finger safe and eliminate draughts. The system achieves DIN 18055, Category C performance for wind loading and water leakage, BS6375 Part 1.

The gaskets (consisting of long-lasting EPDM) between the door panels are continuous and have a unique chamfered design. This means that they interlock and form a most efficient double seal, providing the system with three distinct advantages:

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  • 1. A severe weather rating that ensures there are no draughts or rattling when the doors are closed
  • 2. It is finger safe - a particular advantage if small children are present - as the gaskets provide a buffer to prevent fingers from being trapped
  • 3. The interlocking of the gaskets together means that even if the hinges were forcefully removed, one panel would be prevented from passing another thus providing an additional security feature
  • The flush track
  • The flush track option is recessed into the floor, providing an uninterrupted floor finish. Between the door and the flush track are double, twin nylon brush piles incorporating a fin seal, that close the gap effectively. It is recommended that some form of drainage and a slope away from the doors are integrated.

Operating system

The Sunflex 70 is a bottom-running system, consisting of wheels which are manufactured from tough polyamide and set around a maintenance-free sealed bearing, giving a quiet, smooth operation with optimum resistance to extreme temperatures. Each wheel and guide mechanism can carry up to 200 kg.

The advantage with a bottom-running system is that, unlike a top-running system, the doors will not snag if there is any structural movement above. A bottom-running system places the weight at the base, enabling the guide at the head to have a degree of tolerance. With the wheels of the running mechanism sitting high on the track, the risk of the operating system failing due to dirt or debris in the track is minimised.

The unique design of running gear mechanism - environmentally sealed between the door panels - eliminates the need for a sliding post. This achieves smoother operation, slim sightlines and larger glass area. In addition, the self-lubricating collar-type bearings that guarantee a quiet operating system without any squeaking hinges.

Appearance

The Sunflex 70 system is available as standard in Silver Anodised EV1 or polyester powder coated to a semi-gloss finish; White RAL 9016, Aluminium RAL 9006, Grey Aluminium RAL 9007 or Anthracite Grey RAL 7016. All handles are specially designed to complement the door system; standard colours are White RAL 9016, Black RAL 9011, Aluminium RAL 9006, 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 are available with over 200 colours to choose from. One can even have different colours to the inside and outside (dual colour) or different wood grain effects are available for a nominal charge. The RAL colours can be applied to the handles and hinges if required or alternatively there is a stainless steel handle option. In addition you can specify whether a matt, semi gloss or full gloss level of paint finish is required. A Marine environment finish, required to all systems within 5000m of a shoreline or chemical swimming pool environment, is also available.

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  • Handles and hinges are made of cast alloy, handles are sprung-loaded and flush-fitted to enable door panels to stack flat when fully opened. Optional lever handles are available upon request for single access door or lead doors.
  • Ventilation
  • Trickle vents with an airflow equivalent to 2500mm² or 5000mm² can also be incorporated with the addition of a 40mm add-on head profile; these can be colour coded to suit.
  • Panel catch
  • In the situation of a single access or pass door in an odd number configuration, the panel is fitted with a panel catch which prevents the door from swinging back round in high winds and also counter weights the door with the adjacent panel for effortless operation.
  • 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 sit neatly within the gasket line enabling the easy closure of the panels against the compression top and bottom gasket seal.

Customised

Designs can be customised according your preference - the options include mid-rails, mullions, plant-on bars with dummy spacer grids, among many others.

Complete system

The Sunflex 70 system can also be used to manufacture single doors, French doors, PST, tilt and turn windows and fixed glazed screens. Sunflex uses matching profile sections for these products to achieve an aesthetically uniform appearance throughout.

Glazing

The system is internally glazed and can accommodate glazing ranging from 4mm clear toughened glass up to a triple glazed sealed unit of up to 44mm. Our standard 28mm unit comprises of 4mm clear toughened glass with Low ‘e’ to the inner pane x 20mm argon gas cavity x 4mm clear toughened glass to comply with building regulations for safety and thermal efficiency. All units are BS kite marked, manufactured to BS6206A and BS5713 standards.

IDSystems offer a wide choice of glazing options, including manual or electrical internal venetian or pleated blinds which can be incorporated inside the glazed unit. These are very popular, especially on internally opening systems where curtains are not practical.