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Back Doors in Bromley and Dartford, to Maidstone and Sevenoaks

Replacing back doors can often get overlooked as they’re not as visible as front doors. However, maintaining its performance is just as important as the front of your property. The rear of your home is often seen as a weak point for potential burglars, so ensuring it can withstand substantial force is vital. All of our doors are constructed with high-quality materials that are chosen for their exceptional durability and strength. Their innovative designs also mean they provide excellent thermal capabilities.

Our high-performing back door solutions are available in uPVC, timber, aluminium, or composite materials, and a range of versatile styles, colours and designs. With such a variety of combinations, your new back door will perfectly complement your home. Back door styles that incorporate large panes of glass, such as bi-folds, sliding patio doors and French doors will let the natural light flood into your home, whilst the reinforced glass means it won’t compromise on the security capacity.

Compare Our Back Door Material Options

uPVC Aluminium Composite Wooden
Colours 150+ RAL colours and a variety of wood effects, with optional dual colour designs. 150+ RAL colours and a variety of wood effects, with optional dual colour designs. 150+ RAL GRP skin colours in either smooth finishes or woodgrain aesthetics and textures. 150+ RAL colours, and a range of heritage timber designs.
Styles Entrance, French, Sliding patio Entrance, French, Bi-fold, Sliding patio Entrance, Heritage Entrance, French, Bi-fold, Sliding patio
Glazing Double or triple glazing options, as well as additional decorative glass. Double or triple glazing options, as well as additional decorative glass. Double or triple glazing options, as well as additional decorative glass. Double or triple glazing options, as well as additional decorative glass.
Thermal Performance Multi-chambered profiles break up currents of cold air. Low U-values of 0.9W/m2K and A++ energy ratings can be achieved. Thermally broken frames will keep the warmth inside. As a natural insulator, it can achieve A+ energy ratings. The laminated layers and GRP skins insulate the dense core that fuses uPVC and timber materials. Can achieve U-values of 1.4W/m2k. High-quality manufacturing uses one single piece of treated hardwood for optimal energy efficiency that can achieve A energy ratings.
Security Multi-point locks that utilise anti-pick, bump and drill cylinders are included. They pass PAS24 standards and security regulations. Additional hardware can be included. As standard, 8-point locks are used to pass PAS 25 tests. Toughened glass is 5x stronger than standard glass. Additional hardware can be included. Advanced Yale multi-point locking systems are utilised as standard. Additional hardware can be included. Fitted with multi-point locks and shoot bolt systems to pass BS644 security requirements. Additional hardware can be included.
Life Expectancy From 20 years, with no maintenance required. An anti-fade coating keeps it looking like brand new whilst protecting the materials. From 30 years, with no maintenance needed. It’s corrosion and rust resistant. From 30 years, with no maintenance needed. The GRP protects the materials from dents or scratches. Requiring only a varnish every 5-7 years, from 30 years. A microporous varnish protects the natural material from rotting or warping.
Suitability A plethora of flexible designs that will accommodate any budget. A premium material with distinctive slimline and sleek frames. Choose between modern or heritage designs to suit any style of property. Responsibly sourced timber will add character to new and old builds.
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Master Window & Conservatory Installers Association
  • Materials IconMaterials IconBrowse materials Tab arrow
  • Colours IconColours IconBrowse colours Tab arrow
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  • Browse materials

    Browse colours

    Our realistic wood effect finishes are available in white, black, oak, cream, and natural. Use our Kolor Bond system to create the perfect shade for you. For the ultimate in customisation choose any RAL colour for your uPVC, timber, or aluminium doors.

    Composite Colours

    Grey (Wood)

    Grey (Wood)

    Oak

    Oak

    Natural Wood

    Natural Wood

    Agate Grey (Wood)

    Agate Grey (Wood)

    Black

    Black

    Cream (Wood)

    Cream (Wood)

    White

    White

    Cream

    Cream

    Grey

    Grey

    Green

    Green

    Red

    Red

    Blue

    Blue

    Chartwell Green

    Chartwell Green

    Rosewood

    Rosewood

    Any RAL Colour

    Any RAL Colour

    uPVC Colours

    White

    White

    Black

    Black

    Grey

    Grey

    Chartwell Green

    Chartwell Green

    Cream

    Cream

    Rosewood

    Rosewood

    Light Oak

    Light Oak

    Irish Oak

    Irish Oak

    Any RAL Colour

    Any RAL Colour

    Timber Colours

    Gloss White

    Gloss White

    Ebony

    Ebony

    Mahogany

    Mahogany

    Afromosia

    Afromosia

    Chartwell Green

    Chartwell Green

    Hawthorn

    Hawthorn

    Iroko

    Iroko

    Lavenham Blue

    Lavenham Blue

    Magnolia

    Magnolia

    Oak

    Oak

    Olive Green

    Olive Green

    Walnut

    Walnut

    Any RAL Colour

    Any RAL Colour

    Aluminium Colours

    Any RAL Colour

    Any RAL Colour

    Choose by style

    Composite back door styles and designs

    Our composite back doors provide exceptional performances as they are manufactured using several materials, rather than just one. Our pioneering composite door fabrications incorporate hardwood panes of timber, modern uPVC elements and a foam core in the door panel. The dense door panel is able to stay intact from even the toughest forces and is highly weather-resistant. The reinforced frames are efficiently insulating as they are bonded together with lamination layers and uPVC edged banding, meaning they’re draught-free. The composite material is finished in an outer GRP skin that is resilient to scratches and dents and eliminates the occurrences of cracking, warping or fading. This modern manufacturing process also avoids any upkeep to ensure they continue to perform as good as new for their lifetime, which lasts at least 30 years.

    We can easily create exclusive composite back door styles. With 150 RAL colours and a plethora of smooth and authentic woodgrain finishes, they can perfectly suit both old and new properties alike. For a distinctive design, we can include bespoke glazing and elegant hardware.

    Our composite back doors are fitted with Yale locks as standard. Yale are the leading supplier of door locking systems, so you can have peace of mind that your home has the best protection possible. Their advanced multi-point locks have been tested to common burglary methods, including splitting and drilling.

    View our RAL colour chart
    White composite back door installation
    White uPVC french door

    Maintenance-free uPVC back doors in Kent

    Completely unique to each homeowner, our uPVC back doors are available in a variety of styles and designs, including French, patio and standard entrance styles. Depending on your personal preferences, we can create a classic timber effect appearance for period properties, or a sleek modern design for contemporary homes, or something in between! As uPVC is such a versatile material, we offer 150 RAL colours and a number of authentic appearing wood effect finishes for a heritage door appearance.

    uPVC is commonly chosen as a rear door solution as it’s the most cost-effective option. However, this doesn’t mean it compromises on performance. It’s a naturally insulating material, and boasts an innovative multi-chambered design, meaning the heat can’t escape out of your home through the several layers. Therefore, a replacement uPVC back door could even save you money on your energy bills!

    Modern uPVC easily fits with the modern lifestyle as it is essentially maintenance-free. All it requires is the occasional wipe-down with a damp cloth to keep it looking as good as new. You won’t need to worry about it warping, cracking or fading thanks to its inventive outer coating which protects the material from the elements.

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    Slimline aluminium back doors will add a modern aesthetic

    Aluminium is one of the strongest materials used in the modern-day construction industry, making it an ideal choice for replacement back doors. Its exceptional strength means that it is able to withstand extreme forces and harsh weathers, keeping your home protected from both unwanted intruders and tough weather conditions. It’s also maintenance-free, so it’s performance or appearance won’t deteriorate over time. Aluminium is able to last for at least 30 years, making it an excellent way to add value to your home.

    The beauty of aluminium doors is they can be designed in a variety of styles to blend with both old and new properties. We offer aluminium bifold, French and sliding patio back doors. You can decide from 150 RAL colours that are designed in a smooth finish, for a modern and sleek door style. Or if you reside in a historic property, we offer woodgrain effects that are incomparable to real wood. Our range of contemporary and sophisticated hardware will perfectly finish the overall design.

    A unique advantage that aluminium doors offer is its slimline appearance. This design includes less frame and more glass, meaning more natural light can brighten your home so it creates a bright atmosphere. It won’t compromise on your home’s thermal performance as aluminium is a naturally insulating material and our advanced double glazing is able to achieve A+ energy ratings.

    Grey aluminium bifold door
    TImber french doors installation

    Elegant wooden back doors to suit any style of home

    Wood is a naturally dense material, and as we use only single pieces of timber in our new doors, it will be sure to stay intact from extreme forces. This makes it an excellent door material to increase home security. It’s also a natural insulator, so the heat will be kept inside of your home, meaning you’ll notice the inside of your home is a more comfortable temperature with replacement wooden back doors.

    We offer a number of timber back door styles, including classic entrance doors and also French, bi-fold and patio doors, depending on how much privacy you’d like to retain at the rear of your property. With our modern manufacturing, we can create both contemporary wood door designs and classically timeless timber door styles to suit any style of property. Choose from elegant Chartwell green, sleek greys or traditional oak effects. As we use only the highest quality materials, we can easily replicate your existing door design down to the finest details, which is why our wooden back doors are commonly approved for use in conservation areas and on listed properties.

    Our wooden back doors will last for at least 30 years and require only minimal maintenance to keep them looking and performing like new. We finish our wooden materials in a quality coating that protects the material from warping, rotting or absorbing moisture. It will also stop the colour from fading. To enhance the lifespan of your new timber door, we advise a yearly coating of varnish or wood protection to sustain its performance.

    As a reputable double-glazing installer, we use only responsibly sourced timber. An environmentally friendly option, you’ll be reducing your home’s carbon footprint.

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    Protect your home with a secure back door

    We know that home security is paramount for any homeowner, which is why our back-door solutions are constructed using durable and long-lasting materials. They’ll continue to keep your home protected over time, without weakening when exposed to tough weathers and forces. Continuously tested to strict industry standards, they’re proven to defend against common burglary techniques.

    We incorporate a range of advanced locking features, including multi-point locks, mortice locks and anti-snap cylinders. For homeowners looking for greater protection and peace of mind, we can also include additional security features, like night latches and security chains.

    Our composite doors are fitted with Yale locks as standard, the most reputable locking supplier on the market. So you can be confident it will keep your home and family safe and secure.

    If you’re opting for a back door that incorporates large panes of glass, like bi-folds, sliding patio and French doors, you can be assured it will keep your home safe as we use toughened glass. It’s 5 times stronger than standard glass, and upon impact, toughened glass shatters into hundreds of small pieces, reducing injuries from occurring.

    Timber bifolding doors

    Energy efficient double-glazed back door solutions

    Our back doors perform as you’d expect of a modern replacement solution. Our high-performance double glazing can achieve A+ energy ratings, the thick door panels are dense and insulating, and the tightly fitted frames are draught free. When combined with our state-of-the-art manufacturing techniques, they provide exceptional thermal capabilities. No matter the weather conditions outside, the inside of your home will sustain a comfortable living temperature, and you could even save money on your heating bills.

    Door buying process

    Buying a product through FineLine offers you real peace of mind

    Customer promise

    We have the knowledge and experience to provide you with exactly what you need. Our staff are expertly trained to guide and advise you. We offer you a 10 Year Guarantee.

    Read our customer promise

    We are one of the largest Fensa Aproved regional retail companies.

    Our Accreditations

    BSI 9001 2015
    Fensa Approved Installer
    TGAS
    Trustmark
    Ultraframe conservatory installer

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