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Aluminium windows

Aluminium windows combine the material's versatility with high-performance insulation. Buying aluminium windows guarantees robustness, longevity and low maintenance. Add to that high resistance to mechanical deformation and reliable burglary protection. You can install strong insulation systems to have our aluminium windows perform on par with less expensive wooden and uPVC windows and cut down on energy costs.

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Our aluminium windows

Resistant against warping and highly secure: Our aluminium windows are market-leading, robust, and feature reliable burglary protection systems.

    Our cost-effective base system aluminium


    • Flush design
    • 45 mm construction depth
    • Available with double glazing
    from € 118 from € 118
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    UW- value
    ≥ 1.10
    The commercial premium window system


    • Flush design
    • 70 mm construction design
    • Available with double and triple glazing
    from € 136 from € 136
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    UW- value
    ≥ 1.00
    The eco-friendly eco premium system

    MB-70 HI

    • Flush design
    • 70 mm construction depth
    • Available with double and triple glazing
    from € 142 from € 142
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    UW- value
    ≥ 0.91
    The commercial energy-saving system


    • Flush design
    • 77 mm construction depth
    • Available with double and triple glazing
    from € 148 from € 148
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Customise aluminium windows

You can choose from a diverse pool of fittings and features for your aluminium-frame windows. Find a fitting look for every situation – installing them into your home's facade or as a room divider. Our RAL colours feature standard shades and special colours to create a wonderful look. Window bars are another way to further individualise them. Use our comprehensive configurator to have full control over your aluminium profiles and their great Uw values at affordable aluminium window prices.

Colours for aluminium windows

Pick your favourite colour from our diverse RAL colour palette – e.g., anthracite grey or classical white. Aluminium fits well with shades like anthracite grey, similar to the material.

Glazing bars for aluminium windows

Choose one of two different types of bars at a comparable cost: Viennese or "Helima".

Detail drawings for aluminium windows

Do you want insights into your bespoke aluminium window's or door's construction? We have put together all details on measurements and the profile cut for all available aluminium windows and doors here, whether side-hung, top-hung, or casement.

Uw-values for aluminium windows

Thermal insulation is key for any aluminium window system: Look at our different aluminium window frames' U-values.

Features and fittings for aluminium windows

Our online configurator gives you free reign on various aspects, from functionality to security and fittings. Pick your preferred look and add individualised glazed elements, security features and accessories like handles, a thermal break, and roller shutters. Round out your new aluminium flush casement windows with an insect screen to create the perfect solution for your comfort, security, functionality, insulation, and design needs.


We have the perfect glazing for any glazed aluminium window. Pick your favourite variant, from insulated to noise dampening, safety, ornamental, and textured glass.


To improve on anti-burglary protection, we use high-quality turn and tilt fittings from WINKHAUS and other producers of equal or better quality. They are available at different security levels.


We have handles made of premium materials like aluminium and stainless steel in base versions, with locks and various tasteful designs.

Roller shutters

Surface or front-mounted roller shutter: You decide your bespoke shutter's type, colour, looks, and type of drive from our range of options at low cost.

Window security

Find detailed information on how to increase the safety of your aluminium windows in this category. You can improve its burglary protection attributes with many different features.

Window Types

In addition to standard sizes and types, our product range offers custom dimensions and shapes. Find out more below, including the various opening types and configurations.

Insect screens

Window screens are a simple accessory that can make a big difference in everyday life by keeping mosquitoes and other bugs out.

Info & Instructions: Help with buying windows

Our excellent product range allows you to customise perfectly-fitting aluminium framed windows. We have simplified this process in our online configurator, which guides you step by step. Additionally, we have comprehensive instructions on ordering and installing windows and doors and comparing the available materials and their cost. If you want, you can also watch our tutorials and videos on all topics concerning windows and doors.


Here you will find a selection of product, manufacturing and installation videos, which also serve as instructions for installation.


Useful instructions, as well as information in written and pictorial form, make window installation much easier.

Order aluminium windows online at low prices

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Over 200,000 happy customers and counting

Jack’s Point, Otago, New Zealand
Residential building
Jack’s PointOtago, New Zealand
uPVC-alu windows and doors for a passive house

“windows24.com brought windows and doors with amazing quality to our project. The products are well-built and with top certified for passive house values.”

Heathmont, Melbourne, Australia
Residential building
HeathmontMelbourne, Australia
Composite windows and doors for a passive house

“We spent more than a year searching for a window manufacturer with high product quality and maximum design flexibility. At windows24.com we found the perfect solution for us.”

Cornwallis, Oakland, New Zealand
Residential building
CornwallisOakland, New Zealand
uPVC windows sliding door for a high wind zone

“Our architect recommended windows24.com to us. Their German-based window expert team was very helpful in finalizing details, organizing transport and training my onsite-builder.”

Hotel Trunk Valley British Virgin Islands
Commercial building
HotelTrunk Valley British Virgin Islands
Hurrican-proof aluminum windows

“windows24.com was great partner in reconstructing one of our hotels. With their help we reached highest quality in terms of design, isolation and wind load resistance.”

Our aluminium windows are renown worldwide

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GS"Industry trailblazers"
Glaswelt"The No. 1 in online window retail"
Google rating
GFF"Affordable prices and high-quality products and services"

Further information

Our aluminium windows' special features

The inherent qualities of aluminium make it a high-performance construction material for doors. It's comparatively lightweight and doesn't warp easily. Also, our casement windows made of aluminium are highly resistant to ageing, which makes them sustainable and almost maintenance-free. The powder-coated outer surface is inseparable from the material, which means it's highly resistant to scratches and sunlight – cutting down on maintenance and replacement costs.

The low weight of these windows makes them very versatile. Combine that with the high stability ALUPROF aluminium profiles and large glass surfaces, e.g., a top-hung aluminium bifold door for a beautiful conservatory. They're great for modern architecture designs or office spaces that require windows with large windowpanes, too. The comparatively higher aluminium window prices are worth the investment in the long run.

The benefits in comparison

Compared to uPVC and wooden windows, aluminium has many benefits. But keep in mind that all three materials have pros and cons and differ in many areas. Aluminium performs best in terms of stability and longevity. Wood and uPVC are very thermally efficient because of their low thermal conductivity. We manufacture our aluminium windows with special insulation systems, glazings and gaskets so they can guarantee great thermal efficiency. Other benefits are:

  • Low-maintenance and long-lasting
  • Highly resistant to mechanical deformation
  • Excellent burglary protection
  • Many different colourisation options
  • Modern and timeless design options with slim frames
  • Excellent energy efficiency thanks to thermal insulation

Unlike other metals, aluminium doesn't rust, which makes it incredibly durable in all weather conditions. Neither rain nor humidity are a threat to your aluminium windows and doors. The sun doesn't bother them, either: UV rays and the summer heat have no effect.

Individually customise your new windows

Create your new aluminium casement windows in the windows24.com configurator to be a perfect fit for your home's specifications. We offer you a palette of standard and special colours: ranging from modern anthracite, steel-look grey, and classical white to fancy moss green or ruby red.

Tip: It's better to purchase new doors and windows together – whether in a new building or you're renovating. That'll prevent your thermal insulation from having a weak spot, especially since your new made-to-measure solutions can have added insulation measures like thermal breaks. Another benefit: You're making things easier for aluminium window manufacturers by ordering congruent designs.

Further, individualise your new slimline aluminium windows' glazing. Pick from classic clear, ornamental or textured glass. The latter is great to prevent people from looking through the glass in entrance areas or bathrooms while letting natural light in unimpeded. Also, you can freely choose from various extras like window handles and aluminium window bars. These increase security, comfort and energy efficiency and add to the design. But keep in mind that those extras increase aluminium window prices.

Frequently asked questions

You'll need a bigger budget when looking for aluminium windows instead of lower-cost off-the-shelf uPVC products. The cost of aluminium windows is directly related to their quality. A highly insulated triple-glazed window is always more expensive than double-glazed variants with fewer insulation measures. But aluminium windows pay for themselves quickly: Multi-pane glazing makes them more energy efficient, cutting down your energy bills. Because of their longevity and highly durable properties, aluminium windows are an excellent investment for larger buildings.

Give your facade that certain something with the right colour. Our commercial colour palette has a large range of standard and special shades. Pick classics like white RAL 9013 or aluminium variants RAL 9006 or RAL 9007. Or maybe you’re looking for a colour contrast, perhaps strong ruby red RAL 3003 or moss green RAL 6005. You can even have the exterior of your aluminium windows coloured differently than the window frames' inside to match the style of your home's interior. Find the full colour palette in our windows24.com configurator.

Two main factors play a role here, your preference and your building. Individually assign your aluminium windows' width and height in the configurator. But make sure your initial measurements are accurate to the millimetre. Aluminium window prices and installation costs increase naturally if you make a mistake while measuring. For guidance on how to measure correctly, use the instructions on windows24.com.

This depends on your budget and your requirements. The most significant difference between aluminium and uPVC is the ratio of longevity to cost. Aluminium windows are more robust and durable, while uPVC is less expensive. Use the configurator to get a comprehensive comparison, from cost to features or the size of the casement. Feel free to contact us with questions about our product range – whether you're looking for aluminium windows, aluminium doors, bifolding systems or other products for home improvements.

Any triple or double-glazed window's U-value is calculated using the heat transfer coefficient of the frame and the glass. We have greatly optimised our aluminium products' thermal insulation using advanced insulating measures. Hence, they can even achieve values at passive house levels.

Do you still have questions?

Here you will find answers to the most frequently asked questions about aluminium windows.

our question is not answered here? Then simply call us on +49 711 860 601 60 . Our experts will be happy to answer your questions.

Or you can directly arrange a telephone appointment. Whether for a new building or a renovation, you will receive individual expert advice from us so that you can configure your desired product exactly according to your ideas.

Order aluminium windows online at low prices

Configure aluminium windows now
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