Folding Doors

We are specialists in the supply and installation of the Smart Systems Visofold sliding folding door. The system is built up using a frame in which the moveable door parts are set, allowing them to be folded either left or right. These elements or sashes are supported and hinged to a vertical mullion fitted with a roller mechanism top and bottom. This series of folding doors is mostly used in hotels and restaurants, stores and in private houses and allows for a complete wall to be opened up in the summer for a larger space. The system is also popular for use with conservatories allowing for internal living areas to be opened up during the summer time.


  • Polyamide thermal break for superior insulation
  • Security locking on main doors and intermediate stiles
  • Maximum sash weight up to 85kgs
  • High performance weathering
  • Internally beaded
  • Virtually Maintenance free


Aluminium: AIMgSi 0.5 Type 6060.6063 T5 in condition F22 (according to NBN P21-001 and DIN 7863, TV110, NFP 85301, ISO 3994. Tested and approved according to an artificial ageing test of "Plexi glass" combined with vulcanised rubber.

Co-extruded profiles: According to DIN 7863, TV 110, BFP 85301, ISO 3994, tested and approved according to an artificial ageing test of "Plexi glass" combined with vulcanised rubber.

Thermal break: Polyamide strips PA 6.6.25% reinforced with glass fibre.


Electrostatic powder coating: According to the guidelines of APA Qualicoat in most of the current RAL colours. The composed profiles (with thermal break) can be coated with different inner and outer colours (dual colours). Anodisation in satin or bronze colours with EWAA/EURAS Qualinod quality label. Also Available in woodstructure finish to imitate different woodstructures (powder coated according to Qualicoat standards).


  • Opening inside or outside of building
  • Accommodates glazing from 6mm to 38mm units and panels
  • Choice between standard sill or low sill profile allowing leveling of frame with floor
  • Accommodates many styles and opening options
  • Single or dual colour finishes
  • Slides left or right in opening

Thermal Break

The profiles consist of 2 aluminium extrusions which are separated from one another by polyamide strips PA 6.6.25 reinforced with glass fibre. A gluing thread, rolled and pushed in together with the thermal break profile ensures a strong adhesion after melting and flowing, when the profiles are heated in the hardening furnace.


According To STS 52.0

Air Transmission - PA2

Mechanical resistance to wind - PV2

Watertightness - PE2


Built-in depth: Outer frame 78mm, sash 70mm.

Sealings: With extruded EPDM rubber and PP brushes

Glazing: From 6 to 38mm.

Design, Manufacture & Installation

Utopia Windows undertake all aspects of folding door design, manufacture, installation and support. With years of experience in the installation of folding doors we understand that accuracy is everything, and as such we do not sell our doors to contractors for installation, rather, every bi-folding door we manufacture, we install. This way we know that the bi-fold door is installed correctly. We hope you will choose us to install your new bi-folding door! Call today - 020 8640 1991.

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