Bifold Doors

Technical Summary:

Sizes
Frame Depth = 93mm
Frame Jamb Width = 69mm
Door Stile Width = 95mm

Maximum Size
2700mm frame height
1000mm width per leaf

Trickle Ventilation
TFF Slimline 1250, 2500, 5000

 Locking
Centor Bifold door gear is used in conjunction with twin-point locking and shootbolts
Related Links
• Centor Brochure
• Timber Specification
• Paint Finish
• Testing Information
• CAD Drawings
Our high quality bespoke timber doors are available in a full range of configurations and finishes.
Bifold (or sliding - folding) doors are increasingly popular, allowing better views and increasing the flexibility for uses of the room. The well-established Centor operating gear enables multiple doors to slide with ease.
Manufactured to the highest level of precision in our state of the art factory, we have years of experience in making door sets up to 8 metres in length and configurations, including complicated bowed track and right angled layouts.
All doors come with secure multi-point locking and fully adjustable hinges as standard, available in a range of finishes.

Technical Summary
Bifold Doors Tech Sheet
File Size: 422 kb
File Type: pdf
Download File
To download section detail in CAD format please click here.

Product Features

Bottom Rolling
The weight of the doors is carried by the bottom rolling system, eliminating the need for overhead structural beams. The bearings, tapered rollers and angled track are all concealed by a protective gasket which helps prevent debris collecting in the sill track. Cleaning sweepers ensure any grit or dust is cleared away from the rolling mechanism and drainage weep holes allow any water and dust to escape.
Multipoint Locking
Designs with master and slave doors can also operate as traditional a French or single door system. Folding door systems are complemented with Centor locking systems with Twinpoint lock and dropbolts.

Cill
Housing the bottom rolling gear into our timber sill section gives a sleek design finish whilst maintaining excellent weatherproofing and draught exclusion.
Subcills
Our doors are compatible with a several different subcill types to suit various situations. As well as a traditional timber cill we also have a  low, aluminium threshold or a removable packer option.

Weatherproofing Gasket
Our doors are weatherproofed using an EPDM double gasket system providing superior weatherproofing, draught exclusion and thermal performance. Doors are weather tested to DIN EN 1027 and air permeability tested to DIN EN 1026.

Common Layouts & Centor Information

We can offer a wide range of bifold layouts and configurations. A summary of these along with information on the Centor Bifold Door gear are shown in the below pdf download.
Centor Brochure
File Size: 915 kb
File Type: pdf
Download File

Glazing Information

Factory Glazing
All windows & doors are all glazed in our workshop by our highly skilled team of glaziers. The external beading profile is designed to replicate the look of a traditional bead while utilising modern manufacturing techniques and a concealed pin system which ensures a blemish-free surface to the glazing bead. A full range of glass specifications are available.

Glass
We offer a full range of glass units including slim-lite units, internal blinds, triple glazing and switchable glass. We can supply various other options to improve U-values, reduce heat gain or to ensure greater security. Etched or patterned glazing can also be supplied.

• 24mm double glazed sealed units manufactured to a 4-16-4 configuration. Conforms to BS5713*
• Toughened safety glass as standard
• Factory glazed using a fully sealed system
• Low emissivity, solar control, tinted, easy-clean, obscure and laminated glass are all available as options at an extra cost

Fenestration
A choice of 18mm bonded bars or 44mm (34mm or 24mm with slim-light glazing) through bars allow a full range of fenestration options, from Georgian multi-pane units to semi-circular or Gothic beading configurations. Our highly skilled craftsman and precision engineering allow us to create very complex fenestration designs to an extremely high standard.

* A summary of the relevant British Standard can be found here.


Hardware

Handle Options

Bifold configurations with a master and/or slave door leaf will be supplied with Tokyo handles as standard, available in a range of finishes. Other handle options are available on request.
Tokyo (Standard)
Scroll
Pendant
Forgecraft
Paddle Lever
SS316 Stainless
Flush bifold handles (required on intermittent leaves), D-handles and bifold hinges are only available in stainless steel, brass or bronze.

Paint Finish

Timber is treated with three coats of factory applied micro-porous paint or translucent stain providing a fully finished product. Our fully automated finishing plant provides a high build, uniform paint finish. All paint, primers and finishes are micro-porus, allowing the timber to breathe naturally.

A choice of standard paint colours are available. Special colours can also be produced to match any sample or RAL reference number. We can also provide a combination of two-tone internal/external.

Please visit the paint finish section of our website for more information.