Maximise the glass area, with a slimline casement window. Increasing the light which can enter the home and allowing more of the view to be enjoyed. With a variety of style options available our slimline casement windows are an excellent choice for any glazing project. Contact us today to request a supply only quote, or give us a call to discuss specifying slimline casement windows in your next project.
Exceptional aesthetics start with exceptional designs. That’s why we offer homeowners and tradespeople deluxe slimline aluminium windows. Chosen for their minimalist and clean lines, whilst still offering excellent thermal performance and security ratings. Maximising views and increasing the amount of natural light which can enter the property, whilst keeping your home safe and secure.
Considering aluminium’s ability to resist warping, rotting, or cracking, homeowners can achieve incredible thermal performance with unquestionable elegance. Colourfast and long lasting, slimline aluminium windows are an ideal solution for timber replacement or minimalist designs.
One of the reasons we can offer such attractive sightlines on slimline aluminium windows is the superior strength to weight ratio of aluminium. With the natural properties of this incredible material, we can manufacture double or even triple glazed windows with ultra slim frames.
Yet, these minimal frames don’t compromise energy efficiency or performance. We can ensure that homeowners improve the thermal efficiency of their windows, not to mention the potential to improve the efficiency of their homes overall.
The minimal, durable and secure 58BW ST window from AluK is designed to replace and complement existing steel windows. Designed specifically to be used on buildings where steel windows have been traditionally installed. Featuring square sections and slim sightlines on fixed light’s of just 43 mm.
The SL 68 has been designed specifically to meet the needs of UK households. With high quality designs, these slimline casement windows are perfect for replacing older steel frames, delivering a stylish and timeless aesthetic. Tried and tested to ensure it offers the highest levels of performance and industry-leading weather resistance.
The OW-70 from Origin, is Origin’s slimmest window with sightlines of just 65mm wide. Meaning less frame and more natural light. With a sleek flush external finish the OW-70 will add a touch of class to any property. Available as a casement, bay or fixed window.
The Cortizo Casement is a thermally broken window that can be side-hung or top-hung for outward openings. Thermally efficient with u-Values from 1.0W/ m²K and PAS 24 certified, it is a high-performing window option for all property styles.
A modern alternative to steel for traditional homes
Suitable for conservation areas
Provides the slimline look of steel with the benefits of aluminium
Slim sightlines to match existing steel windows
Multiple configurations for any build
Multi point locking systems for superior safety
Polyamide thermal breaks for improved thermal efficiency
Green guide rated A
Made onsite in Exeter
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The AluK 58BW ST offers a wide range of possibilities. With design styles which include square, stepped edge and putty line, helping to achieve design and planning permission requirements. Plus configuration styles that include top hung, side hung, bottom hung, fixed light and multi-light options.
Fixed Light
Side Hung
Top Hung
French Casement
Window Over Fixed
Fan Light
Side Light
Top Hung Next to Side Light
Side Hung Next to Side Light
Coupled Window
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Whether you are looking for a statement colour or a more subtle colour for your slimline aluminium windows, the AluK 58BW ST is available in the full RAL colour range. Giving you a 150 colours to choose from, guaranteeing that you will find the one that suits.
Powder coated to provide protection against the elements, as well as long lasting colour.
Single colour allows for the same colour inside and out. Or select the dual colour option, allowing you to select an exterior colour which matches the style of the outside of the house, whilst choosing a different colour for the interior of the casement window to blend in with the internal colour scheme.
Please find some of our most popular slimline casement window colour options below.
For further inspiration take a look at the AluK colour collection brochure.
The AluK 58BW ST includes hardware sympathetic to traditional steel window designs.
Ultra slim frame
Concealed hinges and drainage
Particularly suited for residential properties
Ideal for both contemporary and traditional properties
Perfect replacement for steel or timber windows
Enhanced thermal performance
Window Energy Rating up to A++
Side security brackets for ultra secure windows
Made onsite in Exeter
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All of our slimline aluminium windows are manufactured to meet your exact requirements. Available in a range of configurations including:
SL68
Double Casement Side Hung
Side Hung with Friction Stays
Ventilation Window
Top Hung
Side Hung
Multi Light Side Hung
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We offer an array of varied colours for signature styles and classic looks. With such attractive options for slimline aluminium windows, homeowners can create fully bespoke designs to suit the style of their property and to match their tastes.
Choose from one of our most popular colours below, or from the RAL colour range of over 150 RAL colours. In a choice of matt or gloss finish, metallic colours, textured metallic Coatex finishes, wood-grain finishes, and pre-anodised (recommended for marine locations) or anodised coating.
Elegant minimalist look with ultra slim sightlines
Unique inline window handle
Stainless steel multi-point lock
Additional locks for larger frames
Hinge guards with anti-slip and lock technology
Made in Britain
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The Origin OW-70 slimline window is available in a range of configurations, including:
Left: Side Hung, Right: Top Hung over Dummy Sash, Outside View
Left: Top Hung over Dummy Sash, Right: Side Hung
Top Hung over Fixed Light
Fixed Light
Top Hung, Outside View
Side Hung
Left & Right: Side Hung
Left: Fixed Light, Right: Side Hung
Left & Right: Side Hung, Center: Fixed
Fixed Frame with Mullion
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The Origin line boasts over 150 colours for homeowners to choose from. With the options for everything from chic Anthracite Grey to something more audacious like pastel pink, ensuring that every customer can find the colour they want for their slimline aluminium windows.
We offer traditional inline handles in Chrome, Silver, Anthracite Grey and more. Cranked handles can be ordered in any RAL colour to match the slimline aluminium windows.
U-Values from from 1.0 W/ m²K
PAS 24 Certified
70mm sightlines
Thermal break zone of 32 mm
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The Cortizo Casement TB Window is available in side-hung or top-hung outward opening configurations. It can be finished in several dual colour systems, colour powder coating, wood effect powder coating, anti-bacterial powder coating, or an anodised finish.
Cortizo Casement Window
Cortizo Casement Window
Cortizo Casement Window Cross Section
Cortizo Casement Window Cross Section
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Quick Quote Turnaround
Competitive Trade Prices
Accurate Lead Times
Fast Track Options
Supplier Support
Versatile Configurations
Exeter Showroom
Manufactured Onsite
Expansive Delivery Areas
Full RAL Colours
Request a supply only quote for slimline aluminium casement windows.
We supply slimline windows to the trade and homeowners in Exeter, Devon, Cornwall, Somerset, Dorset, Wiltshire and surrounding areas. Request a quote today.
Alternatively, visit our showroom to touch and experience the products we have on offer. With an expert on hand to answer any questions you have.
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Whether you have a question on slimline aluminium windows, or need some advice please get in touch, our team will be happy to help.
Sat within a highly sought after area overlooking the estuary, a modern extension, with glazing on three sides was added … Continued
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