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Aluminium Bi-Fold Doors in Kent, Bromley and Dartford, to Maidstone and Sevenoaks

Our dramatic aluminium bi-fold doors transform the home. Merging inside and outside space, their concertina opening system and slimline frames create unobstructed outside views. They are an ideal back door choice especially when included in a conservatory or extension design, providing a transition between the home and garden or terrace.

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    Anthracite grey aluminium bifold door

    Multiple configurations

    Add multiple panels to accommodate the design specifications of your home, with the option to open in or out

    Flush stacking

    A unique flush line pop-out handle allows for square flush stacking panels when the doors are fully open.

    Range of colours

    Available in a range of single or dual colour options, so you can have the inside of your door in a different colour to suit your interior

    What are bi-fold doors?

    Bi-fold doors are sliding doors with a concertina-style fold in which the door panels neatly collect to one side leaving a wide opening. With as many as eight door panels, you can create a fully glazed wall, depending on the size of the space. Opening up the room creates an open-plan feel between home and garden making them an increasingly popular alternative to traditional exterior French doors.

    Although perfect for summer, you don’t have to worry about bi-fold doors letting you down during winter. Like all our doors, they still possess all the energy-efficient qualities that keep your home warm. Our door frames combined with our high-quality double glazing provide superior insulation. Security is taken care of too with multi-point locking and secure frames that will keep your home safe.

    What bifold doors can do

    Wide range of configurations

    From space-saving three-panel bi-folds to expansive eight-panel bifold systems, our bi-fold doors fill any space.

    Exceptional home security is locked in

    Able to last up to 45 years, our aluminium bi-fold doors are certified by Police Preferred Specification Secured by Design and tested to PAS 24.

    Better thermal performance

    Featuring a unique polyamide thermal break, our aluminium bi-fold doors achieve A+ energy ratings and low U-values.

    Effective protection from the elements

    Finished in an anti-fade and anti-corrosion coatings, our aluminium bi-fold doors are exceptionally strong and weather-resistant.

    10 years’ product guarantees

    All new doors carry a standard guarantee for 10 years on fit, function and finish.

    Environmental protection

    Durable, strong and endlessly recycled, aluminium is one of the most sustainable construction materials available.

  • Colours
  • Glazing
  • Furniture
  • Configurations
  • Colours

    A wide range of colours are available including any RAL colour for aluminium bi-fold doors.

    White

    White

    Ivory White

    Ivory White

    Light Cream

    Light Cream

    Mid Cream

    Mid Cream

    Green Grey

    Green Grey

    Grey

    Grey

    Smoke Grey

    Smoke Grey

    Warm Grey

    Warm Grey

    Shadow

    Shadow

    Slate Grey

    Slate Grey

    Anthracite Grey

    Anthracite Grey

    Midnight Grey

    Midnight Grey

    Deep Black

    Deep Black

    Dark Brown

    Dark Brown

    Chocolate Brown

    Chocolate Brown

    Warm Red

    Warm Red

    Ocean Blue

    Ocean Blue

    Mid Green

    Mid Green

    Any RAL Colour

    Any RAL Colour

    Glazing

    Choose from EcoMax double glazing and Comfort Glass, or from our range of  textured and patterned glazing for added privacy or decoration. Additional options including toughened glass can be specified for extra security on top of energy efficiency and warmth.

    Furniture

    A range of door furniture options adds a personal touch to any door. Choose from elegant designs for door handles and locks.

    Furniture Options

    Securifold

    Securifold

    Locking T-Handle

    Locking T-Handle

    T-Handle

    T-Handle

    Furniture Colour Options

    Black Finish

    Black Finish

    Brass Finish

    Brass Finish

    White Finish

    White Finish

    Chrome Finish

    Chrome Finish

    Steel Finish

    Steel Finish

    Configurations

    2-0-1

    2-0-1

    2-0

    2-0

    2-0-2

    2-0-2

    3-0

    3-0

    3-0-1

    3-0-1

    4-0

    4-0

    3-0-3

    3-0-3

    4-0-1

    4-0-1

    3-0-2

    3-0-2

    4-0-2

    4-0-2

    4-0-3

    4-0-3

    4-0-4

    4-0-4

    5-0-1

    5-0-1

    5-0-2

    5-0-2

    5-0-3

    5-0-3

    5-0

    5-0

    6-0-1

    6-0-1

    6-0-2

    6-0-2

    6-0

    6-0

    7-0-1

    7-0-1

    7-0

    7-0

    8-0

    8-0

    Great new addition to your home

    Our aluminium bi-fold doors are a great addition to your home if you want to maximise floor space whilst modernising your home’s appearance. With a variety of configurations, you can choose the number of panels, and whether they open to one side or in the middle.

    Choose from over 150 RAL colours for a back door that perfectly fits with your home. Thanks to toughened glass and the strength of aluminium which is impressively tough, our bi-fold doors provide great security that will stand the test of time. With its multi-chambered design and our innovative ECOMax double glazing, they’re a sure way to keep your room a comfortable temperature, providing excellent thermal capabilities.

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    open bifold door in kitchen
    Black aluminium bifold door

    Made to measure bi-fold door configurations in Kent

    With our replacement bi-fold doors, different threshold options are available to give improved weatherproofing or to allow easier access to fit even the most restricted spaces. You can choose the number of glass panes and the overall size of the door. With a flexible range of configurations, you can opt for an opening on one side or in the middle, so they’ll ideally fit your home.

    Personalising your new bi-fold doors is easy with our vast array of designs and choice of 150 RAL colours. You can even choose a dual colour option, with contrasting outside and inside colours. We also offer a range of attractive door furniture and glazing options, so whether it’s elegant gold handles or modern chrome, we cater to every homeowner’s personal tastes.

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    Bring in the outdoor with our aluminium bi-fold doors

    Our aluminium bi-fold doors are custom-made to fit your home in the South East of the UK. Their smooth finish and slim frames create a dramatic, contemporary appearance to the exterior and interior of your home.

    An intensely strong material, aluminium can withstand incredible amounts of force, giving you peace of mind that your new doors won’t succumb to unwanted intruders or the harsh weather. Their advanced manufacturing techniques also enhances their energy efficiency capabilities, retaining the warmth inside of your home for a comfortable living temperature 365 days of the year. The durability of our aluminium bi-fold doors ensures that they will continue to provide security and energy efficiency for years to come, making them a smart investment for any home.

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    Oak effect aluminium bifold door
    Large grey aluminium bifold door

    Secure bi-fold doors in Kent

    Your home is always protected with our range of bi-fold doors, incorporating industry-leading locking features, including drop bolts for maximum security. They’ve also been thoroughly tested to meet industry regulations. As our bi-fold doors are individually made, we can also include a range of additional security hardware features should you wish to have them added.

    Large panes of toughened glass, five times stronger than standard glass, adds another level of protection to your home. It is also a safer choice as it shatters rather than cracks in the event of a severe impact.

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    External bi-fold doors that are energy efficient

    Our bi-fold doors are manufactured with thermal performance in mind. With tightly fitted frames, and ECOMax double glazing or Comfort Glass, they offer year round energy performance. You’ll no longer experience cold spots inside your home as they keep the room at a comfortable temperature. During the summer, they’ll let the warmth out for the perfect climate inside.

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    Dual colour aluminium bifold door
    Bifold door with blinds

    Improve your privacy and thermal efficiency with integral blinds

    Including integral blinds in your bi-fold doors enables better regulation of heat entering or exiting the room. Operated by a slider or cordless slider, you can also control your room's privacy.

    We offer horizontal or pleated designs and a many attractive colour options. Fully compliant with relevant safety regulations and enclosed between panes of glass, unlike exterior blinds, they will stay in perfect condition and are maintenance-free.

    Take a visit to either our Dartford, Maidstone or Warlingham showrooms to see how they look.

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    Compare Door Styles

    French Doors

    French Doors

    • Available in high performance uPVC or aluminium
    • Industry-leading locking features as standard,
    • Achieve A+ energy ratings

    Popular Colours:

    Black Brown
    White
    Elephant Grey
    Anthracite Grey Grained
    Flush French Doors

    Flush French Doors

    • High-performance uPVC
    • Industry-leading locking features as standard
    • Achieve A+ energy ratings

    Popular Colours:

    White
    Black Brown
    Anthracite Grey Grained
    Elephant Grey
    Sliding Patio Doors

    Sliding Patio Doors

    • Available in high-performance uPVC or aluminium
    • Multi-point locking system
    • Achieve A+ energy ratings

    Popular Colours:

    Deep Black
    Anthracite Grey
    White
    Smoke Grey
    Back Doors

    Back Doors

    • Available in uPVC, composite or aluminium
    • Multi-point locking system
    • Achieve A+ energy ratings

    Popular Colours:

    White
    Elephant Grey
    Anthracite Grey Grained
    Black Brown
    Front Doors

    Front Doors

    • Available in uPVC, composite or aluminium
    • Multi-point locking system
    • Achieve A+ energy ratings

    Popular Colours:

    White
    Anthracite Grey
    Black
    Blue
    Aluminium Doors

    Aluminium Doors

    • Modern design with minimalist sightlines
    • As low as 1.2 (W/m²K)
    • Over 30 years life expectancy, minimal upkeep

    Popular Colours:

    Deep Black
    White
    Smoke Grey
    Anthracite Grey
    uPVC Doors

    uPVC Doors

    • High performance in wide range of styles
    • U-values: As low as 1.3 (W/m²K)
    • 20 years life expectancy, maintenance free

    Popular Colours:

    White
    Black Brown
    Anthracite Grey Grained
    Elephant Grey
    Composite Doors

    Composite Doors

    • GRP skin and solid core in wide range of styles
    • U-values: As low as 1.1 (W/m²K)
    • 30 years life expectancy, low maintenance

    Popular Colours:

    Anthracite Grey
    White
    Blue
    Red

    Your Window and Door Journey

    Replacing your windows and doors is easy.

    Choose the right windows and doors

    Fill out a form online or visit one of our 10 showrooms to see our range of high-quality windows and doors up close and speak to our expert team for any advice on materials, styles, colours, energy efficiency and glazing. Once you are happy with your choice, we’ll provide you with a free no-obligation quote.

    Place your order with us

    When you want to go ahead with your order, the details have been approved, and we have received your order deposit, our administration team will provide your contract to a surveyor.

    Your surveyor assessment

    The surveyor will contact you to arrange a date that is convenient to come to your home and review the project scope, take accurate measurements and discuss any other matters that need to be considered. We will then confirm the surveyor’s assessment.

    Confirm an installation date

    Our installation department will contact you to arrange a date for your window and/or door installation and your products will be ordered and manufactured, using cutting-edge techniques and industry-leading materials.

    You're ready for your installation

    On the day, our skilled team will arrive at the agreed time to install your products, ensuring minimal disruption. They’ll explain the locking and opening systems and share maintenance tips to keep your products looking brand new. Once your installation is complete, we will contact you to confirm that everything has been finished.

    Begin Your Project

    Get your free quote – with no-obligation to buy. Simply fill in the form below to get started:







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      See the styles in our latest brochure

      It’s worth spending a bit of time understanding the technical details as well as the visual differences between different door types.

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      Multi-award winning company

      Here at FineLine, we’re proud to have won many prestigious awards for our products as well as our work in the community:

      Installer awards 2022
      G21 Finalist
      SEHBAC showroom winner
      Ultraframe designer winner
      Conservatory and orangery awards winner 2019
      NHIC 2018 Consumer confidence award
      G17 Installer of the year
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      We’re one of the largest regional retail companies

      Vetted for professionalism, competency & compliancy

      Showrooms make it easy to choose

      The best place to narrow down your options and pick up on any points of interest.

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      What folks say about us

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      Our Accreditations

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