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FREE Triple Glazing Upgrade, plus up to 5 years 0% APR

May Offers Graphic

Energy Saving SALE
FREE Triple Glazing Upgrade
Plus up to 30% off and 5 years 0% APR

Get a price

May Offers Graphic

Energy Saving SALE
FREE Triple Glazing Upgrade
Plus up to 30% off and 5 years 0% APR

Get a price

May Offers Graphic

Energy Saving SALE
FREE Triple Glazing Upgrade
Plus up to 30% off and 5 years 0% APR

Get a price

  • Materials
  • Materials

    Key Benefits

    Aluminium bi-fold doors are an amazing addition to homes in Dartford.

    We supply and install aluminium bi-fold doors in Dartford in many configurations and colours.

    Our FENSA approved installers and expert design team are ready to help you get the best bi-fold doors for you.

    Get a Quote

    Request a Quick Quote







      By submitting your details you confirm that you agree to the storing and processing of your personal data by FineLine as described in the privacy statement.


      Professional Installers

      All of our bi-fold door fitters and installers are FENSA approved. That means you can trust our team to make sure you get the most out of our bi-folds security and thermal features for your Dartford home.

      Get a Quote
      Black aluminium bifold doors installed in a kitchen
      Black aluminium bifold door interior

      Thermal efficiency

      Our thermally broken bi-fold door frames will keep the warmth inside. As a natural insulator, it can achieve A+ energy ratings and U-values of 1.32w/m2k. So you can save money on your Dartford home's energy bills.

      Contact Us

      Custom designed

      All of the bi-fold doors are made in premium aluminium. This material can come in over 150 RAL colours to suit any taste and style you require.

      Contact Fineline Today
      Light grey aluminium bifold door
      Black aluminium bifold doors installed in an extension

      How do bifold doors work?

      Bi-fold doors work in a concertina, they are made from panels that are on runners so you can open an entire section of your home easily while saving space.

      How secure are bifold doors?

      Bi-fold doors are very secure. They come with multi-point locking systems and toughened glazing so you can be sure they keep your Dartford home safe.
      We use Origin bi-fold doors as they offer the best bi-fold doors on the market.

      How big are bi-fold doors?

      All bi-fold doors are custom made to make sure they fit any opening perfectly. As long as you have an opening about as big as two standard doors there will be a bi-fold door that can fit.

      How much value do bifold doors add?

      Experts say that bi-fold doors can add up to 10% to the value of a home. This is because they add a wow factor to any property.

      Get a Quote

      Aluminium Bi-Fold Door Prices Dartford

      Talk to one of our aluminium bi-fold door experts to get an accurate price. Call or send us a message online and we will be happy to help.

      Get a Quote
      Close up of aluminium bifold door

      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:








        By submitting your details you confirm that you agree to the storing and processing of your personal data by FineLine as described in the privacy statement.

        brochure fineline cover shot

        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.

        Download a brochure

        Earn rewards when
you recommend a friend

        Recommend a friend and we’ll give you 
a free amazon voucher when that person places an order with us.

        Recommend a friend

        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
        Learn more

        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.

        See our showrooms

        Our Accreditations

        FENSA Approved
        GGF
        TSI Approved Code
        Ultra Installer
        TGAS
        Trustmark
        QA National Warranties
        GET A FREE QUOTE

        FREE TRIPLE GLAZING Upgrade

        Book by 26th May & get 5 years 0% APR
        Offer
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