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High-quality composite doors for homes in Kent and the South East

Composite doors are arguably the highest performing doors available today. The combination of uPVC and composite materials used in their construction creates a door which is exceptionally strong, thermally efficient, and aesthetically attractive. Finished in a GRP skin that imitates the texture of timber, it also eliminates any maintenance requirements. Its durability makes composite doors highly weather-resistant, so it’s the ideal replacement solution for homes in exposed locations, like on the coast or in the countryside.

Our collection of composite doors are available in a range of different styles and over 150+ RAL colours. From contemporary designs to replications of traditional doors, they can be used in modern and period properties alike. Upgrading to a composite door is a sure way to add value to your property.

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    Why choose our range of composite doors

    Highly durable

    Composite doors are exceptionally durable, offering long-term resistance to wear, warping, and weather damage.

    Energy efficiency

    Enhance your home's insulation with composite doors that provide excellent thermal performance, reducing energy bills.

    Security assurance

    Ensure the safety of your home with composite doors that feature strong locking mechanisms and robust construction.

    Customisable design

    Personalise your composite doors with a range of styles, colors, finishes, and hardware options to match your home's aesthetic.

    Sound insulation

    Create a quieter indoor environment with composite doors that offer sound insulation, minimising external noise.

    Peace of mind

    Backed by a 10-year guarantee and a commitment to exceptional craftsmanship and customer satisfaction.

    Compare Door Styles

    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
    Aluminium Doors

    Aluminium Doors

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

    Front Doors

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

    Back Doors

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

    French Doors

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

    Flush French Door

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

    Bi-Fold Doors

    • Aluminium frames for slim sightlines
    • Industry-leading locking features as standard
    • Achieve A+ energy ratings
    Sliding Patio Doors

    Sliding Patio Doors

    • Available in high-performance uPVC or aluminium
    • Multi-point locking system
    • Achieve A+ energy ratings
  • Choose by style
  • Browse colours
  • Choose by style

    Browse colours

    Composite Colours

    Our doors come in a wide variety of colours to make your home the envy of your street. We can create any colour you desire with over 150 RAL colours to choose from, to ensure your new coloured door fits perfectly with your home.

    White

    White

    Devon Cream

    Devon Cream

    Agate Grey

    Agate Grey

    French Grey

    French Grey

    Duck Egg Blue

    Duck Egg Blue

    Chartwell

    Chartwell

    Grey

    Grey

    Anthracite Grey

    Anthracite Grey

    Black

    Black

    Green

    Green

    Blue

    Blue

    Purple

    Purple

    Red

    Red

    Light Wood

    Light Wood

    Dark Wood

    Dark Wood

    Any RAL Colour

    Any RAL Colour

    A range of composite door colours, including agate grey and black

    Benefiting from streamlined manufacturing, composite is an extremely flexible material that can be uniquely tailored in a plethora of styles. We offer 150 RAL colours, including popular Chartwell green, anthracite grey and sleek black. Agate grey composite doors have emerged in popularity, as their classic yet sleek appearance can beautifully complement any style of home. If you reside in a historic property, or you’re looking to inject a classical character to your home, wood effect GRP skins are also available. They replicate the look of real timber so you won’t be able to tell it apart from an original wooden door.

    Our range of composite front and back doors can also be fabricated in dual colour designs, meaning that the outside and inside colour are different. This is a sure way to ensure your replacement door will seamlessly blend with your home’s existing appearance.

    Opting for a new composite door means there are a plethora of decorative options available to you. We can incorporate attractive glazing options, such as bevelled and leaded glass panels. It will let natural light brighten your home, whilst retaining your privacy. Our door furniture collection ranges from antique pieces to contemporary chrome handles, ensuring the perfect fit for your personal tastes.

    Red composite entrance door

    Combine the timber style with the modern composite performance

    Composite doors combine the high performance of modern uPVC with the traditional look of timber. The GRP outer skin is scratch-resistant and protects the door frame and core from harsh weathers. So, unlike older wooden doors, it won’t rot, chip or warp. This skin protects the door’s materials, meaning they boast a lifespan of at least 30 years. Composite doors continue to perform like new for many years, making them a great investment for your home.

    You’ll benefit from the natural grain effect of timber but avoid any maintenance requirements. All composite doors need is the occasional wipe down with a damp cloth to remove any dirt.

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    Composite doors fitted with advanced security locks

    Composite doors are a popular replacement door solution with homeowners across Britain due to their strength and durability. They have a solid structure, with a dense core and tightly fitted frames, that will stay intact even when subjected to extreme forces. Like all of our doors, they have been rigorously tested to common burglary methods, giving you assurance that your home is protected.

    Our composite doors are fitted with industry-leading Yale locks as standard. The advanced multi-point locks bolt the door to the frame at several points, significantly boosting their resilience. For homeowners prioritising home security, there is no better solution than choosing composite doors with integrated Yale locking systems.

    As your door will be created to your individual specifications, we can also include extra security hardware for greater peace of mind.

    Slate Grey Composite Door
    Blue front composite door

    Thermally insulated replacement doors in Tonbridge, Rochester and Gravesend

    Our modern composite doors are fabricated with thermal insulation as a priority. Their dense cores ensure for unparalleled thermal conductivity that eliminates any energy from being wasted and seeping out of your home. In the same way, draughts are kept out of the room. Not only will a replacement composite door reduce your home’s environmental impact, it will also save you money on your energy bills.

    If your replacement composite door includes double glazed units, our advanced A energy rated glass will increase the door’s energy efficiency. The heat is actively kept inside of your home, for a comfortable temperature 365 days of the year.

    You can also choose to upgrade your composite door with a thicker 70mm rebated option. This will further improve thermal performance of your door. It also increases its weather protection, making it a good solution for more exposed homes.

    Window and door colours

    Your Window and Door Journey with FineLine

    Replacing your windows and doors is easy.

    01

    Choose the right windows and doors

    Fill out a form online or visit one of our 11 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.

    02

    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.

    03

    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.

    04

    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.

    05

    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.

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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

      Improving South East homes for more than 50 years

      With show centres across the South East, you’re not far away from achieving your dream home:

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