A guide to aluminium windows - everything you need to ...

Are you thinking about replacing your windows with a long-lasting, durable aluminium alternative? Or perhaps you’re a self-builder trying to find the perfect glazing solution for your new home! Whichever category you fall into, it’s likely that you’ll be spending considerable time researching the pros and cons of aluminium windows. Luckily, we’ve put together all of the handy information you need to know in this guide. 

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Let’s start by taking a look at aluminium as your material of choice…

Is aluminium a good material for windows?

Here at Kloeber, we offer windows in three different materials; aluminium, alu-clad (our composite), and timber. Today we’re going to focus on discussing our aluminium windows but if you do want to find out more about our other materials, this guide might be a helpful resource for you. 

Aluminium is a fantastic material choice for glazing, for so many reasons! Of course, there is the obvious – the aesthetic. It’s a sleek and visually appealing option that works well in both modern and period homes, adding a real statement feature to both the inside and outside of your property – but it’s not just about good looks! Aluminium is also…

A strong choice – you can enjoy more design options when you choose aluminium thanks to the strength of this material. Whereas timber has its limitations, aluminium is also suitable for slimmer window designs. This is great if you’re going for a minimalist design style for your home. 

Eco-friendly – Unlike cheaper alternatives (PVC we’re looking at you) aluminium is an eco-friendly material that can be widely recycled and therefore won’t sit in landfill for many years to come. Thanks to its longevity, you shouldn’t need to worry about this for a long time anyway!

Thermally efficient – Years ago, aluminium might have been looked upon as poorer in terms of thermal insulation, thankfully, time and technology have both moved on and this is no longer the case. Our aluminium boasts a fantastic thermal performance, keeping your home cosy during those colder months. 

Low maintenance – worried about discolouration or your windows peeling? You needn’t be! Thanks to our special powder-coated factory finish, you won’t need to worry about repainting your windows anytime in the near future. Our aluminium windows are super durable and won’t peel or rust. 

What aluminium window styles do you offer?

If aluminium is sounding like the material of choice for you, you might be interested to find out more about our range of stylish aluminium windows! We have five in total, here’s what you need to know about each of them…

Aluminium Kustom Window

Our bespoke aluminium casement window boasts thermally broken frames, safety glass as standard, and is available with either double or triple glazing. An upgraded version of our KL70 window, the Kustom, offers lower U-values and therefore improved thermal performance. You can select from any RAL colour, and even opt for our dual colour option too. 

Aluminium Heritage Window

The latest addition in our range of aluminium windows, the Heritage shows off some serious style! Giving a nod to the industrial trend, this window with glazing bars will give your home a modern edge. Offering super slim sightlines and a 70.5mm frame depth, this window is made from thermally broken aluminium with a double or triple glazing option. It’s not just about style points either, as this design also boats thermally efficient U-values up to 1.2 Wm2K. If security is a concern you’ll be pleased to know this design is highly secure with reverse epaq locks, PAS24 and document Q approval. 

Aluminium Über Window 

Our Über window is a high-end alternative to our Kustom window, and offers a completely flush sash with a super slim frame available. The 70.5mm frame depth and flush vent profile is ideal for those looking for a more minimalist design. You can also still choose from any RAL colour and opt for our dual colour option. Still boasting the same fantastic thermal performance and security, we think this window is one of our greatest achievements yet!

Aluminium Tilt & Turn Window

Perhaps a tilt and turn window would be more suitable for your property? Our tilt and turn aluminium windows are manufactured with dual action mechanisms that allow you to tilt the panel inwards or open it on its hinges into the room. The only thing to be mindful of here is that you have enough indoor space and no furniture blocking your glazing should you wish to open the window up! This is a really versatile design, boasting great thermal performance (with double or triple glazing options) and providing a clean, modern appearance. 

Aluminium Fixed Glazing

And last but not least, we have our aluminium fixed glazing. This is ideal if you have a space where no opening window is required. Perhaps it’s an awkward part of your room, or you simply just want to let additional light flood through your home! There are lots of different options available as our fixed glazing is totally bespoke with the ability to be manufactured into various shapes and sizes. The panels can be factory finished in any RAL colour in a standard powder-coated finish. There is also the option of matching the frame with our other doors and windows, to offer a consistent look throughout your property. 

Here’s some further inspiration with a selection of customer installations to inspire you for your own project… 

Our Kustom window looks fantastic with this countryside property!

Our Heritage windows provide a real ‘wow’ look for this lovely home.

Our tilt and turn windows were the aluminium window of choice for these homeowners.

This charming thatched cottage extension was one of the more challenging projects we’ve worked on, but doesn’t the curved glazing look great?

Feeling inspired? Why not have a read of some of our other recent blog posts including:

Or if you have any questions regarding the glazing products featured, our team will be more than happy to answer them. You can contact them by calling 01487 740044 or emailing us at info@kloeber.co.uk. 

 

Guide for Casement Windows in Homes

If you’re wondering, “What is a casement window?” it’s a window mounted on hinges to its frame at the side.

It swings open like a door.

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This design allows for various benefits, including better airflow and unobstructed views.

Read on to discover the specific types, materials, and cost considerations that make casement windows a preferred choice for many homeowners.

Casement Style Windows - Overview

• Casement windows come in various styles and operation mechanisms (e.g., side-hinged, top-hinged), offering unobstructed views, superior airflow, and customisation to fit architectural needs.
• Material choices for casement windows, including uPVC, timber, and aluminium, affect durability, maintenance, energy efficiency, and cost, with options like composite windows offering improved performance at a higher price point.
• While casement windows provide benefits such as better insulation and security, they can also have disadvantages, including potential space restrictions due to their outward-opening design and higher maintenance related to mechanical issues.

Casement Windows

Firstly, it's probably best to explain a casement window and how to identify it.

A casement window, distinguished by its hinged design, typically opens outward from the side as a single or double panel.

These modern casement windows are adored for their style, which can effortlessly blend into various architectural designs, including those with French doors.

Their operation is straightforward - turn the handle, and the window swings open, offering a clear view of the world outside.

A secure stay holds the window in place, preventing unwanted movement due to wind. Traditional casement windows are also available for those who appreciate a classic touch.

Casement windows come in many styles to cater to different aesthetic preferences and functional needs. These include:

• Single casement windows
• Double (French) casement windows
• Push-out casement windows
• In-swing casement windows
• Flush casement windows (offering a sleek frame design)
• Picture windows (maximising the glass area for an unobstructed view)

Side-Hinged Casement Windows

Side-hinged casement windows are known for their design, where they are hinged to one side of the frame, allowing them to open in or out.

Thanks to the slim profile options available, this unique design offers unobstructed views and integrates seamlessly into contemporary design.

One of the biggest advantages of side-hinged casement windows is their ability to provide superior airflow.

Whether you want a gentle breeze or maximum ventilation, these windows can open slightly or fully to accommodate your needs.

Equipped with stainless steel friction hinges, they afford users fine control over how far the windows are opened, contributing to safety and convenience.

These windows can be customised in size and design to meet various architectural needs, making them a popular choice for modern homes.

Top-Hinged Casement Windows (Awning Windows)

Top-hinged casement windows, commonly known as awning windows, bring a unique charm to your property.

Attached at the top of the frame, these awning window types open from the bottom outwards, providing easy access and operation.

When combined with larger, upright casement windows, top-hinged casement windows can significantly improve ventilation.

They allow a small, controlled airflow into the space, creating a fresh and airy atmosphere. Furthermore, their outward opening design prevents rain from entering the room, making them suitable for wet climates.

Comparing Casement Windows to Other Window Types

We've all compared certain products to weigh their pros and cons before deciding. Well, it's a good idea to do the same with a casement window.

Understanding how casement windows stack up against other window types is key despite their numerous advantages.

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Casement windows differ regarding opening mechanisms, appearance, and space requirements.

For example, compared to sliding windows, casement windows can open fully for enhanced ventilation, allowing air to enter from multiple directions.

Nevertheless, sliding windows are more space-efficient because they do not require additional space for opening.

Their ease of operation, thanks to their sliding mechanism, might make them a preferred option due to their simplistic functionality.

Casement vs Sash Windows

Several differences emerge when juxtaposing casement windows with sash windows.

The most noticeable difference lies in their operation. Casement windows open in or out on a hinge, while sash windows comprise two window pane units that slide vertically over each other.

Sash windows might be less waterproof than casement windows due to their opening mechanism, making them susceptible to draughts and weather damage.

Regarding aesthetics, casement windows offer a more modern look, while traditional sash windows are often chosen for their appeal and historical significance, particularly in period homes.

Casement windows open completely and can provide unobstructed views and more natural light. Their ability to swing open for access to both sides of the glass generally makes cleaning easier.

Yet, the traditional design and complex sliding mechanism of sash windows often result in higher costs.

Casement vs Sliding Windows

Contrasting casement windows with sliding windows reveals unique features of both window types.

For instance, sliding windows operate by gliding along a track, making them space-efficient as they don’t require extra room to open like casement windows.

However, most modern casement windows have an edge in terms of ventilation. When open, they can catch and direct breezes into the building, offering enhanced airflow and superior ventilation over sliding windows.

In terms of maintenance, sliding windows often have the upper hand.

Their operational simplicity makes them easier to clean and maintain than casement windows, where reaching the exterior glass for cleaning might require more effort.

Contact us to discuss your requirements of Ultra-slim edge Casement Aluminum Windows. Our experienced sales team can help you identify the options that best suit your needs.

Material Options for Casement Windows

Now, you might think that this seems like just another style choice, but the material of your windows is so much more important than that.

Selecting the material for the window frames is a key decision when choosing casement windows.

The most common materials include uPVC, timber, and aluminium, each offering unique characteristics.

Composite casement windows, for instance:

Combine materials like timber on the inside for aesthetic appeal and aluminium or uPVC on the outside for weather resistance.

This combination offers enhanced performance and thermal properties.

Though composite windows are more costly than uPVC or standard aluminium options, their durability, resistance to weathering and decay, and low maintenance requirements justify the investment.

Wood Casement Windows

Wooden casement windows bring a classic appeal to your property. They offer a traditional timber aesthetic that is hard to replicate with other materials, making them a favourite choice for homeowners seeking a timeless look.

Finishes such as stains or varnish can be applied to enhance their aesthetic and protect the wood.

Wooden casement windows, however, need to be regularly maintained to stay in good condition. This helps prevent potential deterioration over time.

They need periodic treatment with paint or wood preservatives to prevent the wood from cracking or blistering.

Despite this, with proper maintenance, wooden casement windows, especially durable types like oak, can last for several decades.

Regarding the cost of new windows, wooden casement windows typically start around £800. They can extend well over £2,000 per window, with installation included, reflecting the quality and lifespan of the product.

uPVC Casement Windows

uPVC casement windows have gained popularity due to their durability, energy efficiency, and affordability.

The typical cost range for standard uPVC casement windows, including installation, is between £250 to £600 per window, making them a budget-friendly option.

Another selling point of uPVC windows is their low maintenance.

They need cleaning with a damp, non-abrasive cloth, saving you time and effort. Modern uPVC casement windows come in various finishes, enabling customisation to fit different aesthetics.

Aluminium Casement Windows

Aluminium casement windows offer a balance of strength and low maintenance.

They are more resistant to warping, shrinking, and twisting than wooden frames and typically come with longer warranties due to their durability.

However, these windows are susceptible to corrosion, especially in coastal areas with salt in the air or water.

They can also be prone to condensation due to metal’s reaction to temperature changes, potentially leading to fungal growth and health issues.

Yet, they are 100% recyclable, offering environmental benefits at the end of their lifespan.

Design-wise, aluminium windows provide flexibility as they are available in multiple colours and finishes, allowing for painting or spraying to match various design aesthetics.

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Glazing Choices for Casement Windows

We all want to be as energy-efficient as possible, don't we? Especially when it is the most cost-effective choice in the long term.

Beyond frame material, the glazing choice for your casement windows also has a significant impact on their performance.

Casement windows are often available with a choice of double-, triple-, or low-E glass glazing options.

These different options provide varying levels of insulation and energy efficiency.

With differing insulation levels, energy efficiency, and noise reduction, these options can significantly boost your home’s comfort and value.

Double Glazing

Double-glazed casement windows are a popular choice due to their enhanced insulation properties.

They lead to warmer interiors in winter and cooler interiors in summer, which can also reduce energy bills by preventing heat loss.

Casement windows with A-rated and A+-rated double glazing are among the most thermally efficient, further reducing heating and energy costs.

Moreover, double-glazed windows significantly reduce noise pollution from external sources, providing a quieter indoor environment.

Lastly, they are more difficult to break, enhancing the security of your home compared to single-pane options, making glass panes a better choice.

Although blown double-glazing can sometimes occur in your windows, it can be repaired and prevented in the future.

Triple-Glazing

For those seeking superior energy efficiency, triple-glazed casement windows are an excellent choice.

They offer U-value improvements of approximately 24% over double-glazed units, sometimes reducing energy costs by as much as a third.

In cold climates, triple glazing retains warmth effectively while reducing solar gain in warm climates and mitigating condensation on the interior glass.

Although triple-glazed casement windows have a 10-20% higher upfront cost than double-glazing, they can be more cost-effective in the long term by cutting energy bills and providing increased comfort.

This is why many people pay triple-glazing costs instead of their casement windows. When fitted in a home, windows should be considered a long-term investment.

These windows are highly rated for energy efficiency, typically scoring A+ or A++, and offer additional benefits such as better noise reduction and enhanced security features.

Casement Window Costs

Now for the most important part: the cost of casement windows! As great as these types of windows are, no one likes breaking the bank when they need new casement windows.

On average, the cost of traditional casement windows in the UK is around £200, but this can change depending on several factors.

Cost is a vital factor in the decision-making process when choosing casement windows. The overall cost is influenced by factors such as:

• Material type
• Glazing options
• Size
• Labour expenses

For instance, options like composite windows tend to be on the higher end of pricing because they offer enhanced performance and thermal properties.

Larger casement windows, such as double, triple, bow or bay windows styles, generally incur higher costs than standard single windows due to the increased material and labour requirements.

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The price can also change depending on any stylistic additions you add to your casement windows, such as window bars.

But look into Georgian bars vs astragal bars beforehand to see which ones you prefer!

Keep in mind that both material and labour contribute to the total project cost, constituting 40-60% of the budget each.

Pros and Cons of Casement Windows

Casement windows, like any product, have their own advantages and disadvantages. On the positive side, they provide:

• Better insulation value
• More airtightness than sliding windows, increasing energy efficiency by preventing cold drafts and heat escape
• Advanced security systems, such as Yale locking mechanisms and multi-point locks, enhance their resistance to forced entry

Conversely, the outward-opening mechanism of casement windows might restrict usable space in areas like walkways or patios, necessitating thoughtful placement.

Moreover, due to their weight and operational design, casement windows are susceptible to mechanical issues like sagging over time, potentially leading to higher maintenance costs.

New Casement Windows for Installation - Our Verdict

To wrap this up, casement windows are a versatile and stylish choice for modern homes.

They offer a range of design options, material choices, glazing types, and security features that can be customised.

While they may require more space and can be susceptible to mechanical issues over time, their superior insulation, energy efficiency, and security make them a worthwhile investment.

Whether you prefer the classic appeal of wood, the durability of uPVC, or the strength of aluminium, there’s a casement window to suit every home and budget.

Frequently Asked Questions

What is meant by a casement window?

A casement window is a type of window that opens outward from a hinge on one side. When fully open, it allows for better ventilation and an unobstructed view.

What is the main drawback to the use of a casement window?

The main drawback to using a casement window is that it can be quite expensive and may not be as secure as other window styles, such as sash windows. Consider these factors before making a decision.

How do casement windows compare with other window types?

Casement windows offer superior ventilation but require more open space than sliding or sash windows.

Therefore, they are a good option if you prioritise airflow and are willing to accommodate their space needs.

What materials are used for casement windows?

Casement windows can be made from various materials, including uPVC, timber, aluminium, and composite. Each material has its own unique set of advantages and disadvantages.

What are the glazing options for casement windows?

The glazing options for casement windows include double, triple, and low-E glass, each offering varying insulation levels, energy efficiency, and noise reduction.

Consider these options when choosing glazing for your windows.

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Written by

Myles Robinson

Managing Director

Myles is one of our esteemed directors at Value Doors, dedicated to sourcing and fitting the best composite doors and windows. His mission is to offer our customers exceptional deals on energy-efficient composite doors, focusing on reducing costs while making sure the most advanced technology is readily available for installation. This commitment is what motivates Myles in the door industry.

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