Close

The cooler times 
are made for feeling warm inside.
So right now, enjoy up to 30% off our doors, windows, conservatories and extensions.**19.9% APR

Find out more

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 over 30 styles and can be created in over 250 colour combinations inside and out . 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.

Get a priceView Composite Doors Brochure

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.

    Outstanding weatherproofing

    Market-leading TriSeal frame for better weatherproofing and performance.

    Super Strong

    Premium cross-laminated Albasia Falcata timber core that is thermally efficient and offers maximum security.

    Seamless Colour

    Advanced InvisiEdge system for a seamless colour edge to the door faces.

    Cool barrier

    Revolutionary, high performance CoolSkin technology to withstand extreme temperature changes and maintain optimum performance.

    Ultimate Defence

    Fitted with the renowned ABS anti-snap diamond grade cylinder as standard, for ultimate defence.

    Energy Saving

    Industry-leading U-Value of just 1.4 W/m²K - the first solid timber composite door to achieve this!

    PAS-24 Secure

    Latest multi-latch deadbolt auto-lock from Avantis, fully compliant to PAS-24: 2016 security standards, for ultimate performance and peace of mind.

    Unique Core

    Unique core combined with auto-fire lock as standard, is designed to minimise thermal movement.

    Aesthetics and functionality in a single door

    An exceptional front door combines style and modern performance with security. Our composite doors will not only transform the way the front of your house looks, it will transform the way it performs.

    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.

  • 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 and 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. Our composite doors also feature a 48mm premium cross-laminated solid timber core that is stronger than the average composite door for maximum security.

    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. It means that composite doors continue to perform like new for many years, making them a great investment for your home.

    Get a price

    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 built for ultimate piece of mind to provide unmatched security for your home. The automatic multi-point locking system engages with four self-locking deadbolts for exceptional strength, while a high-security ABS cylinder provides advanced protection against snapping and picking. Our doors are also PAS 24 security standard compliant and have been rigorously tested to withstand attempted break-ins.

    Want even more security? We've got you covered with our extensive range of additional security hardware which includes mortice locks, night latches, and door security chains for greater peace of mind.

    brown composite door
    grey double composite door installation

    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.

    Our composite doors lead the industry with a U-value of just 1.4 W/m²K. This makes them the first solid timber composite door to achieve such an impressive thermal performance rating. What does this mean for you? As well as lower heating bills, they will help maintain a comfortable temperature year-round, keeping you cool in summer and cozy in winter. A TriSeal frame provides outstanding protection against the elements, while CoolSkin technology ensures optimal performance even in extreme temperatures.

    Window and door colours

    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

    Popular Colours:

    White
    Black Brown
    Anthracite Grey Grained
    Elephant Grey
    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
    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
    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
    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 Door

    Flush French Door

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

    Popular Colours:

    White
    Black Brown
    Anthracite Grey Grained
    Elephant Grey
    Bi-Fold Doors

    Bi-Fold Doors

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

    Popular Colours:

    Deep Black
    Anthracite Grey
    White
    Smoke 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

    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 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.

    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.

      Brochures

      Get inspired with our product brochures

      Ready to make your dream home a reality but don’t know where to start? Find all the inspiration you need.

      Download a brochure
      Amazon voucher offers

      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

      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:

      See our show centres

      Our Accreditations

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