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Aluminium Bay Windows in Bromley and Dartford, to Maidstone and Sevenoaks

Bay windows are an attractive addition that can suit any home. Their protruding design creates the illusion of increased space on both the outside and inside of your home, and they make the perfect space for window seating. Our aluminium bay windows have slimline frames which allows even more light to enter your home and provide wide views of your exterior space. Aluminium bay windows combine the ultramodern thin frame design with the traditional bay style, for a versatile window option that can easily suit any style of home. With over 150+ smooth RAL colours, you can be sure that we’ll design the perfect replacement window solution.

Our aluminium bay windows are fabricated using advanced Aerogel technology. They have the lowest thermal conductivity of any solid material meaning that they can achieve energy efficiency ratings of A+. They create a draught free barrier between your home and the outside world, helping to reduce your carbon footprint and lower your energy bills. Aluminium is an inherently strong and durable material, keeping your home protected from unwanted intruders and strong weathers. Our aluminium bay windows won’t fade, rust, or corrode, and with only minimal maintenance they’ll stay looking and functioning like the day they were installed for many years to come.

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    Why choose aluminium bay windows?

    Sleek & slender sightlines

    With slimmer frames it allows for a wider expanse of glass and unobstructed views of the outside

    Thermally advanced design

    Featuring a unique polyamide thermal break, our thermally broken aluminium frames achieve A+ energy ratings and low U-values with ease.

    Effective protection against corrosion

    Finished in an anti-fade, anti-rust and anti-corrosion coating, our aluminium bay windows are exceptionally strong and weather-resistant.

    Long lasting security

    Able to last up to 45 years, our aluminium bay windows are tested to PAS 24 as standard.

    100% recyclable

    Durable, strong and endlessly recycled, aluminium is one of the most sustainable construction materials available.

  • Colours
  • Glazing
  • Colours

    Our aluminium bay windows can be finished in 150+ RAL colours. Their durable powder coat finish won’t fade or become discoloured and will stay looking like new for many years to come. With so many colours to choose from, there’s sure to be the perfect shade to suit your home.

    White

    White

    Ivory White

    Ivory White

    Light Cream

    Light Cream

    Mid Cream

    Mid Cream

    Green Grey

    Green Grey

    Grey

    Grey

    Smoke Grey

    Smoke Grey

    Warm Grey

    Warm Grey

    Shadow

    Shadow

    Slate Grey

    Slate Grey

    Anthracite Grey

    Anthracite Grey

    Midnight Grey

    Midnight Grey

    Deep Black

    Deep Black

    Dark Brown

    Dark Brown

    Chocolate Brown

    Chocolate Brown

    Warm Red

    Warm Red

    Ocean Blue

    Ocean Blue

    Mid Green

    Mid Green

    Any RAL Colour

    Any RAL Colour

    Glazing

    We offer double glazing and Comfort Glass options that are designed to outperform triple glazing thanks to the inclusion of a tough laminated layer and an effective low-e coating. You can also personalise your new bay and bow windows further with our range of textured and patterned glazing for added privacy or decoration.

    The benefits of upgrading your glazing are truly limitless - the most notable features include increased warmth, reduced energy bills & beating future energy price hikes. For complete peace of mind, we also offer toughened glazing options to enhance your home security further.

    Replacement aluminium bay windows in Kent and the surrounding areas

    If you've been experiencing cold spots during the winter, it's a clear indication that your current windows are not performing optimally. Our aluminium bay windows, available with advanced Aerogel technology, offer the lowest thermal conductivity among window materials, allowing them to achieve impressive A+ energy ratings. Whether you opt for EcoMAX double glazing or Comfort Glass, both options provide superbly low U-values and carry an A+ energy rating to ensure that warmth is effectively retained within your home while keeping draughts at bay. By improving thermal insulation and reducing your environmental footprint, aluminium bay windows create a comfortable atmosphere inside your home while effectively blocking out external noises.

    Aluminium, known for its inherent strength, is an ideal choice for replacement windows. Our frames are designed to withstand tough weather conditions and resist strong forces, offering enhanced security and keeping unwanted intruders at bay. Our aluminium bay windows are fitted with advanced security mechanisms, including multi-point locking systems that exceed industry standards.

    Aluminium windows are virtually maintenance-free, with frames finished with an innovative anti-fade coating that is resistant to rust and corrosion, ensuring that your windows will continue to perform optimally for over 45 years.

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    Grey aluminium bay window
    White aluminium bay window

    Make your aluminium bay windows personal to you

    Available in a wide range of captivating colours and styles, our aluminium bay windows beautifully blend the charm of period designs with their sleek and slender frames. With over 150 RAL colours to choose from you can find the perfect match for your home, with an exquisite range of window furniture to complete the style.

    Bay and bow windows have the remarkable ability to extend beyond the existing wall, providing additional living space and creating a sense of expansiveness within the room and helping to add value to your home, making them an excellent investment.

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    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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      Our Accreditations

      FENSA Approved
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      TSI Approved Code
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      TGAS
      Trustmark
      QA National Warranties
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