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Door glazing in Bromley, Dartford, Maidstone and Ashford

Our double glazing is able to achieve A+ energy ratings, ensuring you’ll be getting some of the best thermal performances available on the market. With its pioneering design, you’ll notice that your home will be a more comfortable temperature all year round. Not only does our double glazing perform excellently, but it also adds style too. With a plethora of bespoke decorative glazing choices, you’ll be spoilt for choice on how you can personalise your front and back door.

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    White uPVC back door

    Replacement double glazed front and back doors in Kent

    As standard, all of our front and back doors will be fitted with our high-performance double glazing. When combined with our high-quality door materials, they provide the thermal performances you’d expect of a replacement door from a leading double-glazing installer.

    Our double glazing is fabricated with two panes of dense glass that encompass a section of argon gas. Through this multi-layered approach, it retains the warmth inside and keeps the draughts from entering, so you can even save money on your heating bills. Another benefit of our double glazing is its superior noise reduction abilities, guaranteeing a comfortable atmosphere inside your home.

    Innovative comfort glass front and back doors

    comfort glass is becoming more common across the UK thanks to its unparalleled performance. It’s a great solution for properties in busier areas as its layered design eliminates any external noises from entering the property. Comfort glass can be incorporated into both front and back doors.

    Our comfort glass is manufactured with an additional laminated layer, meaning it provides even greater temperature control. 365 days of the year, the cold will be kept out and the heat kept inside. It achieves excellent energy ratings and U-values.

    Open flush french door
    Oak effect aluminium bifold door

    Toughened glass and laminated glass to add extra security

    Our back-door styles that include large panes of glass are fitted with toughened glass, which is also referred to as tempered glass. It’s a popular security glass option as it is five times stronger than standard glass. Its highly effective durability will significantly reduce the likelihood of an unwanted intruder gaining entry. When impacted, it will shatter into hundreds of miniscule pieces, so reducing the occurrence of injury.

    Laminated glass boast an inventive manufacturing process that combines the two panes of glass into one, considerably increasing its strength and ability to stay undamaged when smashed. This is an ideal glass option for families with children and pets as it will stay intact until it is replaced, and pieces of glass won’t cause harm.

    Your Window and Door Journey with FineLine

    Replacing your windows and doors is easy.


    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.


    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.


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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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      Our Accreditations

      FENSA Approved
      TSI Approved Code
      Ultra Installer
      QA National Warranties