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Bay Windows in Bromley and Dartford, to Maidstone and Sevenoaks

Bay windows became popular during the Victorian era. Their protruding design allows a wealth of natural light to enter a building creating an airy and spacious ambience inside. Their curved design creates a convenient window alcove where you can relax with a book or even install a window seat.  The interior angle of the bay windows can be specified as 90, 135, or 150 degrees depending on your requirements, adding additional living space to your home. We can replace your existing bay windows with modern alternatives. If you don’t have bay windows, we can build a roof and base to easily install them.

We offer bay windows in three high-performance materials; uPVC, aluminium and timber. Available in over 150+ RAL colours and a variety of wood effects, they can effortlessly suit any style of home. They can be fitted with either casement or sash windows, depending on your personal preferences. Not only will they add style, but our double or triple glazed bay windows will significantly improve your property’s energy efficiency, security and weather resistance.

Compare Our Bay Window Materials

uPVC Aluminium Wooden
Colours 150+ RAL colours and 8 woodgrain options, with optional dual colour designs. 150+ powder coated RAL colours and 4 woodgrain options, with optional dual colour designs. 150+ RAL microporous painted colours and a range of authentic wood effects, with optional dual colour designs.
Glazing Double, triple or secondary glazing options, as well as additional decorative glazing. Double, triple or secondary glazing options, as well as additional decorative glazing. Double, triple or secondary glazing options, as well as additional decorative glazing.
Energy Efficiency A fully welded 6 chamber profile can achieve A+ energy ratings, and U-values of 0.8 W/m2K. An 80mm thermally broken profile can achieve A+ energy ratings and U-values of 0.9 W/m2k. Using a singular pane of treated hardwood, it’s A+ energy rated. With U-values as low as 0.8 W/m2k, it conforms to BS5713.
Security A shootbolt locking system which uses anti-drill and anti-pick cylinders ensures that they exceed building regulation standards. Additional hardware can be included. One of the strongest construction materials available and fitted with multipoint locks, it surpasses home security regulations. Additional hardware can be included. Multipoint locking systems and toughened glass are fitted as standard to accomplish BS6206 standards. Additional hardware can be included.
Life Expectancy From 35 years with no maintenance required. The anti-fade coating keeps the material looking pristine. From 45 years, with no maintenance needed. It’s corrosion and rust resistant. From 60 years. A coating of wood protection should be applied every 5-7 years.
Suitability A cost-effective choice, uPVC designs are flexible as well as being high-performance. Distinctive slimline frames will add a modern touch to any home whilst providing premium performances. Achieve the traditional timber aesthetic with the modern benefits that our responsibly sourced timber offers.
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Master Window & Conservatory Installers Association
  • Materials IconMaterials IconBrowse materials Tab arrow
  • Colours IconColours IconBrowse colours Tab arrow
  • Glazing IconGlazing IconBrowse glazing Tab arrow
  • 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 windows.

    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

    Browse glazing

    Our uPVC, timber, and aluminium bay windows are double glazed for a warmer, safer home. Customise your frames and add Georgian bars in a variety of configurations.

    Textured glass

    Taffeta

    Taffeta

    Stippolyte

    Stippolyte

    Oak

    Oak

    Pelerine

    Pelerine

    Minster

    Minster

    Mayflower

    Mayflower

    Florielle

    Florielle

    Everglade

    Everglade

    Contora

    Contora

    Digital

    Digital

    Charcoal

    Charcoal

    Chantilly

    Chantilly

    Discover more glazing options

    The benefits of upgrading your glazing are truly limitless - the most notable features including 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.

    uPVC bay windows in Tonbridge, Rochester and Canterbury

    uPVC is best choice for homeowners looking for a cost-effective option. Although it still offers superb performances in all aspects. With a multi-chambered frame and an A+ energy rating, it will enhance your home’s energy efficiency. The modern profile of uPVC frames is also incredibly durable, so they’ll continue to perform like new regardless of the weather conditions outside.

    With a protective coating, the frames won’t fade, crack or split over their lifetime, which exceeds 35 years. A key benefit of our uPVC windows is that they don’t need any upkeep, so they’re ideal for the busy lifestyle of homeowners nowadays.

    Our uPVC windows offer a plethora of flexible designs. With over 150+ RAL colours and a number of authentic wood effect finishes, they can easily add style to any type of property.

    uPVC bay sash window
    Aluminium bay window interior view close up

    Ultramodern and slimline aluminium bay windows

    If you’re looking for a modern bay window design, then aluminium is an excellent choice. It has unique slimline frames which will add a contemporary touch to your home. The thin-frame design will also let in even more light for a bright and airy home. You can choose from over 150+ RAL colours or wood effects, with a smooth finish that is sure to add value to your home.

    Aluminium is known to be one of the strongest materials used in the industry, meaning your home will be protected from forced entry. The resilient frames have also been tested to extreme weather conditions, and have proven time and time again that they won’t rust, corrode or split. With a lifespan of at least 45 years, they’re a great investment for any home.

    They use a thermally broken frame which can achieve A+ energy ratings. With naturally insulating features, upgrading to our premium aluminium bay windows will eliminate energy wastage. This will significantly improve your home’s energy efficiency, whilst reducing your carbon footprint.

    Heritage timber bay windows in a range of designs

    When you want the perfect design of the classic bay style with the elegance of real wood, choose our stylish timber bay windows that can be uniquely designed for your home. You can choose from 30 attractive colours and a range of woodgrain effects, so they can easily achieve both modern and heritage designs. Add a bespoke character to your home with our beautiful timber bay windows.

    Not only do our timber bay windows look incredibly stylish, but they also perform exceptionally well. Timber is a natural insulator, so they’ll improve your home’s energy efficiency. It is also inherently strong, so upgrading to high-quality wooden bay windows will give you peace of mind that your property is protected from unwanted intruders as well as the tough weather conditions.

    Timber frames are able to last for at least 60 years. As we use only the best-quality wood they won’t rot, crack or warp like poor quality timber. We suggest applying a coat of wood protection or varnish every 5-7 years to ensure the natural elements are protected.

    We source only sustainably grown timber materials. So if you’re looking for an environmentally friendly window material, then our responsibly sourced wood is the perfect choice.

    Hardwood bay window installation

    Improve your home’s energy efficiency with replacement windows

    As with all our replacement window options, our bay windows are sure to improve the thermal performance of your home. Whether you’re looking to upgrade non-performing bay windows, or get new ones, when professionally installed by our team of industry experts, you’ll see a noticeable difference in the warmth of your home. You’ll be able to save money on your heating bills as less energy will be required to warm the rooms.

    Depending on the material and specification you opt for, U-values as low as 0.8 W/m2K can be attained. This is because we include a range of advanced features, such as warm edge spacer bars, beaded frames and advanced glazing panels. They work together to keep the heat within your home and stop any cold elements from entering. Improve your home’s carbon footprint by upgrading to our industry-leading bay windows.

    Bay windows have a flexible design, so we can install them with either our double or triple glazing. Double glazing utilises two panes of glass that surround a chamber filled with argon gas. This is able to actively retain heat inside, whilst stopping draughts from entering your home. You’ll benefit from a more comfortable temperature inside of the room all year round. Triple glazing includes an additional pane of glass that further enhances it’s insulation abilities. It is 5x more energy efficient than a standard glazed window. Due to it having three glass panes, it’s ideal for properties in noisy areas as it excels in its noise reduction performances.

    Improve your home security by upgrading to robust bay windows

    When it comes to security, our bay windows incorporate state-of-the-art locking systems to protect your property. This includes multi-point locks which bolt the windowpane to the frames at several points, increasing its resilience from forced entry. All of our window specifications are continuously tested to meet strict standards, giving you peace of mind.

    uPVC Bay Window
    White uPVC bay window interior

    Planning permission for bay windows

    Bay windows are the only style that require planning permission because they are classed as an extension. This is because the window protrudes further than the existing wall of a home.

    If you want to replace an old bay window, then you won’t need to get planning permission. However, if you are looking to install new bay windows where the existing window isn’t a bay style then you will need to apply for planning permission. As leading installers, we can advise on the best solution for your individual requirements. Get in contact with one of our experts or visit a showroom to discuss a bay window installation for your home.

    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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