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Energy Efficient EcoMAX Glass™ Double Glazing for homes in Dartford and Maidstone

As a responsible and forward-thinking company, we prioritise sustainability and the environment. That’s why we are proud to offer EcoMAX Glass™ as the standard option for all our uPVC and aluminium products.

EcoMAX Glass™ stands as the most sustainable and eco-friendly glass unit available, utilising a higher percentage of recycled materials compared to any other glass unit in the UK. Engineered with organic materials whenever possible, EcoMAX units are designed to be almost fully biodegradable.

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    Oak effect Residence 9 window interior

    Market Leading Performance

    An Argon-filled cavity and warm edge spacer bar technology helps the window perform on par with market-leading A-rated windows.

    Environmentally Friendly

    Sealant is made using Sunflower Oil, meaning it will decompose, unlike conventional sealants.

    Greener Glass

    A new, friendly range of economical glass.

    What is EcoMAX Glass™?

    EcoMAX Glass™ is the greenest glass unit in the UK, featuring 40% recycled glass content compared to the average of 25%. Engineered from organic materials wherever possible, EcoMAX units are almost fully biodegradable.

    EcoMAX Glass™ matches any A rated unit for insulation and has comparable solar control properties and is EN1279, EN12600 certified. Glass is close-loop recycled, getting it ready for the next lot of EcoMAX Glass™

    Why choose EcoMAX Glass™ ?

    Sustainably sourced

    Fully commited to sustainability, EcoMAX Glass™ is the most sustainable glass unit available in the UK (to date).

    Enhanced security

    Made using two durable glazing panels, our double glazing will notably boost your home's security.

    Ground-breaking, energy saving design

    Designed to reduce the amount of heat lost to the elements, our double glazing attains A energy ratings with ease.

    Maximises natural heat & light

    By maximising solar gain and light transmission, the need for heating and lighting is reduced.

    10-year warranty

    Ensuring all our products are of the very best quality, you can count on your new double glazing to last.

  • Sustainability
  • Sustainability

    EcoMAX Glass™ Sustainability

    By choosing windows with EcoMAX Glass™, you not only benefit from high-performance glazing but also contribute to environmental preservation. Manufactured in one of the world's most efficient plants, EcoMAX Glass™ stands as the most sustainable glass unit available. It incorporates a higher proportion of recycled materials than any other glass unit in the UK, utilizes organic materials whenever possible, and is nearly fully biodegradable. Moreover, the glass undergoes a closed-loop recycling process to create new EcoMAX Glass™ units. With insulation properties that match those of A rated units, it helps reduce energy consumption.
    As a gesture of appreciation for your EcoMAX Glass™ purchase, a tree will be planted in recognition of your installation, effectively offsetting the carbon footprint of the manufacturing process. Each tree planted saves an impressive one tonne of CO2. Additionally, you will receive an EcoMAX certificate to acknowledge your commitment to supporting a more sustainable future.

    In our ongoing commitment to preserving the planet, we have implemented a tree-planting initiative. For every installation of EcoMAX Glass™, a tree will be planted, effectively reducing emissions by one ton of CO2 for each tree planted.

    Rest assured that when you choose our products for your home improvements, you not only receive the desired enhancements but also contribute to the protection of the environment.

    Our comprehensive range of window style includes double glazed options that combine high performance with aesthetic appeal. Whether you prefer double glazed casement windows, bay windows, or bespoke windows, we offer them in high-performance uPVC and aluminium, ensuring they serve as valuable assets to your Kent home.

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    uPVC bay window with double glazing
    Cream Residence 9 window interior

    Energy efficient double glazing in Bromley and Dartford, to Maidstone and Sevenoaks

    Upgrade your existing windows to our EcoMAX™ double glazed windows and experience the remarkable benefits of top-rated efficiency. Our popular double glazing achieves impressive A energy ratings, demonstrating superior performance in terms of U-values and insulation.

    With its sophisticated design, incorporating advanced elements like warm edge spacer bars U-values and beaded window frames, our EcoMAX™ double glazing ensures excellent efficiency across all styles.

    Whether incorporated into our range of U-values or doors, our double glazing is guaranteed to reduce your home's carbon footprint. Furthermore, replacing single glazing with modern double glazing significantly reduces condensation issues, providing a more comfortable living environment.

    Notably, our double glazing is built to last. With a minimum lifespan of 20 years and the potential to surpass 35 years, you can rely on its longevity. Over this time, you could enjoy total savings of £2,200, making the cost of home improvements worthwhile in the long run. Experience the instant difference in your home as it maintains a warm and comfortable temperature year-round, regardless of the weather outside.

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    Secure your Kent home with high-performance double-glazed windows

    Double glazing is manufactured using two toughened glazing panels. It provides a robust design that will significantly boost your home’s security. When exposed to harsh forces, they’ll stay intact.

    Our range of double-glazed windows has been rigorously tested to strict industry standards. This gives them the ability to keep your home safe and secure. Not only are they highly secure, but their resilient design also offers excellent weather resistance. It’s able to withstand strong winds, rains and cold climates without weakening in performance.

    Our collection of double-glazed replacement windows includes several advanced security featureses as standard. Including multipoint locking systems that bolt the frame to the window at several points, increasing their resilience. For homeowners looking for greater security, we can incorporate extra security elements for peace of mind.

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    Large grey aluminium casement window

    Upgrade to replacement double glazed windows for enhanced noise reduction

    With the installation of new windows, you can expect a significant reduction in external noises infiltrating your home. Enjoy a more serene and peaceful living environment, free from the disturbances of busy roads. Not only will this create a quieter ambiance, but it will also contribute to a more restful night's sleep. Additionally, the improved insulation provided by double glazing will help maintain a warmer and more comfortable home.

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    Modern double-glazed window styles and designs

    Our advanced EcoMAX™ double-glazing is the result of streamlined manufacturing processes, ensuring exceptional quality and efficiency. Whether you prefer double glazed casement windows or flush sash windows, we offer a wide range of options to suit your taste and requirements.

    Choose between two exceptional window materials: uPVC and aluminium. With uPVC, you have the advantage of over 150 RAL colours and a variety of authentic woodgrain effects, allowing you to achieve the desired aesthetic for your home. Our aluminium windows provide a sleek and contemporary look, complementing modern architectural designs. Whichever material you choose, the incorporation of double glazing will undoubtedly enhance your home's performance.

    For those seeking even higher levels of insulation, we offer the option to upgrade to our triple glazing alternative, comfort glass. This innovative solution combines two highly efficient glazing panels with a built-in laminate layer and a special transparent Low-E coating. As a result, it prevents 56% more internal heat from escaping, providing exceptional thermal efficiency and comfort for your home.

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    Interior grey aluminium bay window
    A white uPVC window with double glazing installed for energy efficiency

    Explore Local Double Glazing Options

    Discover top-quality double glazing solutions in the picturesque locations of Kent. Our windows, designed to enhance energy efficiency and aesthetic appeal, are available in Dartford, Maidstone, Bromley, Canterbury, Sevenoaks, Tonbridge, Folkestone, Sittingbourne, Ramsgate, Margate, Tunbridge Wells, and Ashford. Explore our dedicated local landing pages to find tailored information about double glazing options in each of these vibrant areas. From modern designs to classic styles, our windows are crafted to suit the unique character of your home.

    Whether you're looking for exceptional thermal performance or a stylish upgrade, our double glazing solutions cater to your specific needs. Navigate through our comprehensive range and connect with the perfect windows for your property in Kent and its surrounding regions.

    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.

    Frequently Asked Questions

    Find all the answers to our most frequently asked questions below.

    What is A rated double glazing?

    Energy efficient home improvements are incredibly important, so if you're wondering how to tell what A rated glazing is you're not alone! 

    How do you replace windows in an old house?

    Run-down window frames can have a real impact on a property's thermal efficiency. Affecting old Victorian and Edwardian homes in particular, many homeowners are led to believe replacing windows in old houses is incredibly difficult - but it needn't be. 

    How do I know if my windows need replacing?

    Modern double glazing lasts at least 20 years, but there are certain tell-tale signs you need to look out for. 

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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