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Aluminium Sash Windows: The perfect combination of style and durability

9 January 2024 | General

When it comes to choosing windows for your home, there are numerous options available in the market. From traditional timber windows to modern uPVC windows, each material has its own set of advantages and disadvantages. However, one option that stands out from the rest is aluminium sash windows.

Here, Direct Trade Windows explores the benefits of aluminium sash windows and why this classic style is becoming increasingly popular among homeowners.

Why choose a sash window?

modern home with sliding sash windows

The most obvious reason for choosing sash windows is aesthetics. The traditional design dates back to the 17th century and, as a result, many famous buildings we know and love are littered with them. Characterful, charming and quaint, new sash windows can transform the look of a property that doesn’t already have them – and maintain the period properties that do.

If you live or work in a listed building, you won’t be able to fit modern-looking windows anyway. Replacement glazing has to be in keeping with the original design of the building, hence why sash windows are still being made in their thousands.

The sash design may be old, but it still has lots to offer besides its appearance. For starters, thanks to their thin frames, sash windows allow an abundance of natural light into a property. Plus, because they open so wide, sash windows offer virtually unparalleled ventilation, great for keeping cool on those breezy summer days.

Unmatched durability

One of the biggest advantages of aluminium sash windows is their durability. Aluminium is a strong and long-lasting material that is resistant to corrosion and can withstand harsh weather conditions without warping or rotting like timber. This means that once you install aluminium sash windows in your home, you can enjoy their benefits for years to come without worrying about frequent repairs or replacements.

Slim profiles

Aluminium sash windows offer sleek and slim aluminium profiles compared to other materials such as uPVC or timber frames. This means that more glass area is visible, allowing maximum natural light into your living spaces while offering unobstructed views outside. The slim profile and flush opening also give these windows a modern aesthetic appeal that complements both modern architecture and traditional homes.

Energy efficiency

Close up of vertical sliding window

With rising energy costs and increasing concerns about climate change, thermal efficiency has become an important factor when choosing new windows for your home. Aluminium sash windows excel in this aspect due to their excellent thermal performance properties.

Unlike older generations of aluminium frames which were notorious for poor insulation properties, newer designs feature modern technology and advanced thermal breaks within the frame structure to reduce heat loss.

This prevents heat transfer between indoors and outdoors by creating a barrier against cold air infiltration during winter months while minimising heat gain during summer months and reducing reliance on artificial heating and cooling systems, leading to lower energy bills throughout the year.

Low maintenance

Another benefit of aluminium sash window installations is low maintenance. Unlike wooden frames that require regular painting and varnishing to keep them looking their best, aluminium windows are virtually maintenance-free. They do not need repainting or staining as different colours can be powder-coated onto the frame during manufacturing, providing a long-lasting finish that won’t fade or peel over time.


Security is a top concern for any homeowner. Aluminium sash windows offer high security features, making them an ideal choice for those who prioritise safety.

Aluminium is an inherently strong material which makes it difficult to break into compared to other materials like uPVC or wood. Additionally, aluminium window systems can be fitted with multi-point locking mechanisms and toughened glass options, further enhancing security levels.

Environmentally friendly

Sliding sash windows on property with outside foliage

Choosing environmentally friendly products has become increasingly important in recent years. Aluminium sash windows are highly sustainable as they are made from recycled materials and can be recycled again at the end of their lifespan.

Furthermore, modern manufacturing techniques have significantly reduced energy consumption during production processes resulting in lower carbon emissions, thus helping reduce your home’s overall carbon footprint.

Design versatility

One of the most attractive features of aluminium sash windows is their design versatility. They come in various styles including horizontal sliding sashes and vertical double-hung designs, giving you multiple options to choose from depending on your preferences and architectural style of your home.

Moreover, aluminium frames can be powder-coated in a wide choice of colours, the perfect solution to match seamlessly with your existing interior decor or exterior facade.

Market leading design from Direct Trade Windows

Sash windows on modern brick home

At Direct Trade Windows, our aluminium sliding sash windows are made using the VS600 system from Smart Systems, delivering the best performance for any property and combining traditional stylings with the advantages of modern thermal technology.

Our vertical sliding sash windows are:

  • Fully customisable– Tailored to complement any style.
  • Thermally efficient– Overall U-value of 1.6 W/m²K.
  • Safe– Equipped with a ‘tilt’ function, these windows suit high rise buildings.
  • Durable– Fully tested to ensure maximum weather resistance.
  • Expertly engineered– Featuring a concealed drainage and coupling option.

How can Direct Trade Windows help you?

For more information, contact our friendly team of installers or visit one of our state-of-the-art showrooms in Slough or Brighton to see our products up close.

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