Doors

Bi-folding Doors - Bi-fold Doors - Visofold 1000

KJM installs Smarts aluminium Visofold 1000 “pillar-less” sliding folding door systems. Often called bi-folds or bi-folding doors. We have a four pane bifold door installed in our showroom in Andover Hampshire, so why not pay a visit to view them. We install bi-folds across Dorset, Berkshire, Surrey, Wiltshire and southern England.

Bi Fold (Bi-folding) doors are an ideal room divider between your house and conservatory and if you really want to open up you living areas to the outside world, Bi Fold Doors offer a light and spacious option.

Available in almost all RAL colours, with the dual option of different colours on either side available, Smarts bi-folding patio doors come with the assurance you expect from a quality designed product. The Smart aluminium profiles are designed to give strength and durability to ensure a structurally sound product that requires minimal maintenance and delivers reliable performance over a lifetime of use.

KJM at present does not offer a uPVC bi-folding doors option.

Bi-Fold Door Features:

  • Choice of open in or out, stack left or right, open at the centre, end or in-between
  • Pillar-less doors from SMART aluminium
  • Colour co-ordinated handles available
  • Slim sightlines allow more light into the building and give a pleasing appearance
  • Ultra-low threshold option where unimpeded access is required (Internal use only)
  • Attractively styled round-edge profiles
  • Aluminium profiles offer low maintenance over the long term
  • High security hook bolt lock and one piece keep
  • Handle integral to lock mechanism and locking shoot-bolts
  • Highly engineered and robust hinges
  • Specially designed stainless steel rollers give smooth and easy operation
  • High quality EPDM gaskets and weather brushes to aid weather proofing
  • Large Polyamide thermal barrier reduces heat loss and improves thermal performance
  • Dual colour option available
  • Hardware options - handles and hinges available in black or white

Patio door including bifolding doors brochures download

Smart Aluminium Bi-folding door brochure

Bi-fold doors Styles

Smart Aluminium Patio doors including bi-folding doors (Full brochure)

Why choose KJM?

  • Huge product range - not just uPVCWhich? Trusted Trader
  • Windows Timber & Aluminium options
  • Which? Trusted Trader
  • Hampshire Trading Standards approved
  • Award winners and Installer of the Year finalist
  • See our feedback on Check-a-trade
  • Non commissioned sales team - they work for you not the job
  • Energy rated windows & doors including class leading 44mm triple glazing

The best glazing uses Ultimate Swisspacer


Spacer bars which conduct less heat at the edge of the glass are referred to as 'warm edge spacer'

The benefits are as follows:

  • Reduced heat loss through windows
  • Condensation on windows can be reduced
  • Better sound insulation

Argon Gas filled sealed units

Filling the gap between the panes increases the thermal performance of insulating glazing units is to reduce the conductance of the air space between the layers. Originally, the space was filled with air or flushed with dry nitrogen just prior to sealing. In a sealed glass insulating unit, air currents between the two panes of glazing carry heat to the top of the unit and settle into cold pools at the bottom. Filling the space with a less conductive, slow-moving gas minimises the convection currents within the space, conduction through the gas is reduced, and the overall transfer of heat between the inside and outside decreases.

Argon Gas filled sealed units

Filling the gap between the panes increases the thermal performance of insulating glazing units is to reduce the conductance of the air space between the layers. Originally, the space was filled with air or flushed with dry nitrogen just prior to sealing. In a sealed glass insulating unit, air currents between the two panes of glazing carry heat to the top of the unit and settle into cold pools at the bottom. Filling the space with a less conductive, slow-moving gas minimises the convection currents within the space, conduction through the gas is reduced, and the overall transfer of heat between the inside and outside decreases.

Low-E Glass

High-performance Low-E (low emissivity) glass is designed to reduce heat loss and must be used on energy rated windows. There are two types of low e glass, Hard Coat and Soft Coat, we use soft coat glass as it gives the following benefits over hard coat:-

  • Better light transmission
  • Better U-Values
  • Enhanced clarity/neutrality.

Low Iron Glass

By reducing the amount if iron in the external pane of glass, the solar gains of the doors are improved. 

Thinking about replacing any of your old doors?

To find out more about the many different types of door options we have available, call us on 01264 359355 or email sales@kjmgroup.co.uk. Alternatively why not visit our showroom to see our entire  range of bi-fold doors. Online pricing enquiries are welcome

Bi-Folding - Bi-fold Doors Hampshire - We install in Surrey-Dorset-Wiltshire-Berkshire-London

Our no pressure promise

At KJM Windows & Conservatories, we pride ourselves on our no hassle, no pressure approach to providing high quality home improvement products to the thousands of customers who have put their trust in us since 1982.

find out more