Slimline Aluminium Windows in Sussex
Britannic Bi-Folds offer a stunning collection of extra-slimline aluminium windows to customers in Hailsham, Crawley, Eastbourne, Horsham, East Grinstead, Lewes, East Sussex & West Sussex. We bring you the stylishly slimline windows from the OW-70 collection by Origin. These slim aluminium windows offer everything you need to make your home look elegant and modern.
Our sleek and slim windows are available in a stunning array of colours, and we even offer a choice of window accessories as well. You can choose from a variety of finishes and designs to create the perfect looking slimline window for your home.
In spite of their 65mm profile, our durable slimline aluminium windows are quite strong. However, we also supplement their strength with high-security locking systems to give you complete peace of mind. This way, you can be sure that your home and family are always safe.
With the level of choice of we offer, you can customise your slimline windows to match your aesthetics and your property’s style perfectly. These windows give you a clean and minimalist look that will enhance the modern styling of your Sussex home.
Sophisticated Windows
Our slimline aluminium windows come from the extra-sleek OW-70 range by Origin. These windows are designed for a slimmer aesthetic, giving you a sophisticated style for your home.
With their narrower than normal 65mm profile, these slim windows are able to give you a finer appearance than even other aluminium windows. However, they also give you all the strength and performance you need to keep your home safe and efficient.
Excellent Heat Performance
Our slimline aluminium windows are designed to give you impressive thermal performance. These windows can give you a U-value of up to 1.2W/m2k and an Energy Rating of A.
With such efficient insulation, you are able to keep your home warm without expending too much energy. With the heat retention you get, you are able to warm your Sussex home faster, and it even stays warm longer.
We also ensure proper weatherproofing so your home stays dry and comfortable as well as warm. With our efficient gaskets and trickle vents, you will be able to ensure a damp-proof house that is free of mould.
Fabulous Style with Slimline Aluminium Windows
With our slimline aluminium windows, you will be able to design the perfect windows for your home. The OW-70 series is available as either a casement or fixed frame window. This combination can be used to create stunning slimline French casement windows, aluminium Gable windows, as well as gorgeous slimline Bay and Bow windows.
Whatever style you choose, we also offer a spectacular palette of over 150 RAL colours from which you can choose. This way, you can match your slimline windows to the colour of your property as well as your décor. If you choose one of our popular colours, Anthracite Grey or Hipca White, you can also enjoy the quick 1 week lead time.
In addition to the wonderful range of colours, we also give you your choice of window furniture. These slimline aluminium windows come with a sleek in-line handle, but you can also choose a cranked handle as well. These too are available in a glorious range of finishes and designs to give you your dream windows.
Secure Slimline Windows
Our slimline aluminium windows are crafted from high-grade aluminium so you get unbeatable strength. These windows are so durable and secure that we offer a 20-year guarantee (in non-marine environments) on them. They have been tested to extremely high standards, giving you a PAS24 certification and accreditation by Secured By Design.
They are also fitted with stainless steel multi-point locks for complete protection. Additionally, the number of locking points is based on the size of your window. This way, you can be sure of complete protection even if you order a larger size.
In fact, when you consider their strength in spite of their slim profile, and the secure locking systems we provide, you will realise that your slimline aluminium windows will last you many decades.
Slimline Aluminium Window Prices, Sussex
We give you slimline aluminium window prices for an affordable home improvement investment in Sussex, including the Brighton, Hastings, Lewes, and Eastbourne areas.
Get in touch with us by sending us your queries through our online contact form. We will get in touch with you to give you all the information you need and provide you with a competitive slimline aluminium window quote.
Ultra-Slimline Windows: Maximising Light and Views
Modern architecture is defined by light and space. Our slimline aluminium windows are engineered to provide the thinnest possible frames without compromising on structural integrity. See how our bespoke slimline range compares to standard aluminium systems to help you decide on the best fit for your Crawley or Hailsham property.
| Performance Metric | Slimline Aluminium | Standard Aluminium |
|---|---|---|
| Visible Sightlines | Ultra-thin profiles (as low as 38mm) for a near-seamless glass look. | Typically 60mm–80mm; thicker frames with more visible metal. |
| Natural Light Intake | Increased glass surface area allows up to 15% more light into the room. | Standard light levels; restricted by larger frame-to-glass ratio. |
| Architectural Style | Ideal for minimalist, contemporary, and "industrial" style renovations. | A versatile, all-rounder choice for traditional or modern homes. |
| Structural Strength | High-grade premium alloys ensure rigidity even with reduced mass. | Inherently strong due to larger profile dimensions. |
| Installation Depth | Low-profile frames are perfect for narrow openings and heritage replacements. | Standard depth; may require more significant structural adjustments. |
Bespoke Colours and Finishes
Our slimline aluminium windows can be made to order in a selection of 150 RAL colours. These powder-coated foils are designed to last you years without peeling, flaking, or fading. As a result, your slimline windows will look just as bright and new-like even after years of use.
We even give you a stunning range of finishes and designs for your window hardware and furniture so you can accessorise your windows to your liking.
Standard Colours
Slate Grey
Anthracite Grey
Black Grey
Jet Black
Light Silver
Dark Silver
Hipca White
Irish Oak
Golden Oak
Mahogany
Walnut
150+ RAL Colours
20 Year Guarantee
We give you durable yet lightweight and slimline aluminium windows that come with a 20-year guarantee for performance. Even though this is limited to non-marine areas, it is a comprehensive reassurance that your windows will give you the performance you want throughout their lives.
View Our OW70 Brochure
Frequently Asked Questions
The primary difference lies in the frame width. Our slimline aluminium windows feature ultra-thin sightlines (often as slim as 38mm), which significantly reduce the amount of visible frame and increase the glass surface area. This minimalist design is perfect for homeowners in Crawley or Hailsham looking to achieve a contemporary “industrial” look or a seamless transition between their indoor and outdoor spaces. Despite the thinner frames, they maintain the same structural integrity and security as our standard Origin window ranges.
Yes, exceptionally so. Many people worry that less frame means less insulation, but our slimline range utilizes advanced thermal break technology and high-performance glazing. These windows are engineered to keep your home in East Grinstead, Haywards Heath, or Uckfield warm in the winter and cool in the summer. When combined with our premium glass options, they achieve impressive U-values that exceed standard building regulations, ensuring your property remains energy-efficient year-round.
Absolutely. We offer over 150 RAL colours for our slimline frames. Whether you want a classic Anthracite Grey for a modern extension in Horsham or a bespoke dual-colour finish to match your interior design in Brighton, we can accommodate your needs. The frames are finished with a durable, marine-grade powder coating that is resistant to fading and scratches, making them ideal for the variable weather conditions found across West Sussex and East Sussex.
Security is a top priority at Britannic Bifold Company. Our slimline windows are fitted with sophisticated multi-point locking systems and high-security hardware that meet Secured by Design standards. The inherent strength of the premium-grade aluminium used in our slimline profiles means they are incredibly difficult to bypass. Homeowners in Royal Tunbridge Wells, Crowborough, and Heathfield can rest easy knowing their property is protected by the latest in window security technology.
We provide professional installation services for our slimline aluminium windows throughout Crawley, Hailsham, and the surrounding regions. Our service area extends across the entire South East, including Lewes, Seaford, Newhaven, and Eastbourne. Whether you are working on a new build project or a traditional home renovation in Hove or Shoreham, our expert team ensures a precision fit for every bespoke window we supply.