TECHNICAL ADVICE

The Ultimate Guide to Aluminium Glazing Systems

Aluminium glazing systems have become the cornerstone of modern architecture, seamlessly blending aesthetics, durability and functionality. From expansive sliding doors that dissolve the boundary between indoor and outdoor spaces, to stylish windows that flood interiors with natural light, aluminium has emerged as the material of choice for architects, builders and homeowners alike. This comprehensive guide explains why aluminium is an effective construction material, explores various types of aluminium glazing systems and provides insights into selecting the right products for your project. 

 

Table of Contents 

  1. Why Aluminium is an Effective Construction Material 
  2. Advantages of Aluminium Glazing Systems 
  3. Maximising Natural Light Within the Home 
  4. Biophilic Design and Glazing 
  5. Making a Statement with Glazing 
  6. Choosing the Right Glazing for Your Architectural Style 
  7. Aluminium Windows 
  8. Aluminium Doors 
  9. Aluminium Bi-Folding Doors 
  10. Slim Framed Sliding Glass Doors 
  11. Open Plan vs. Broken Plan Living 
  12. Steel vs. Aluminium Framed Glazing 
  13. Frame Finishes: Polyester Powder Coating and RAL Colours 
  14. Advice for Homeowners and Self-Builders 
  15. How to Specify Aluminium Glazing Products 
  16. Locking Options and Security Features 
  17. Maintenance and Longevity of Aluminium Glazing Systems 
  18. Aluminium vs. Other Materials 
  19. Cost Considerations for Sliding Doors 
  20. Conclusion 
  21. Contact Us 

 

  1. Why Aluminium is an Effective Construction Material

Aluminium’s rise in the construction industry is attributed to its exceptional properties that align with modern architectural demands. Its strength-to-weight ratio is unparalleled, providing robustness without the burden of excessive weight. This makes it ideal for large structures and expansive glazing systems that require both durability and ease of installation. 

Moreover, aluminium naturally forms a protective oxide layer, granting it remarkable resistance to corrosion and weathering, even in harsh environments. Its malleability allows it to be extruded into complex shapes and profiles, enabling bespoke designs and intricate architectural features that were previously unattainable. 

Sustainability is another key advantage. Aluminium is fully recyclable without any loss of quality, aligning with the increasing emphasis on environmentally friendly construction practices. Additionally, modern aluminium glazing systems incorporate thermal breaks and insulation, enhancing energy efficiency and soundproofing. To delve deeper into why aluminium is such an effective construction material, read our detailed article “What makes aluminium an effective construction material?“. 

 

  1. Advantages of Aluminium Glazing Systems

Design Flexibility 

Aluminium’s versatility is a boon for architects and designers, allowing for the creation of slim profiles that support large panes of glass with minimal framing. This maximises natural light and offers unobstructed views, a hallmark of contemporary design. The material can be powder-coated in any RAL colour or finished with special coatings, including wood-effect or metallic finishes, to match any design scheme. This flexibility extends to custom configurations, from traditional casement windows to modern sliding and bi-folding doors. 

Durability and Low Maintenance 

One of the standout features of aluminium glazing systems is their longevity. These systems often last over 45 years with minimal maintenance, making them a cost-effective choice in the long term. Aluminium does not warp, rot, or rust, making it suitable for various climates, including coastal areas. Maintenance is straightforward, requiring only simple cleaning without the need for repainting or special treatments. For tips on prolonging the life of your aluminium glazing, check out our maintenance guide “How to prolong the life of your aluminium glazing“. 

Environmental Benefits 

Aluminium’s recyclability means it can be reused indefinitely without loss of quality, reducing environmental impact. Enhanced thermal performance reduces heating and cooling requirements, lowering energy consumption and contributing to a building’s sustainability credentials. 

 

  1. Maximising Natural Light Within the Home

Natural light is a crucial element in architectural design, significantly impacting the ambience and functionality of living spaces. Aluminium glazing systems, with their slim profiles and large glass areas, are instrumental in maximising natural light. Exposure to natural light boosts Vitamin D production, strengthens the immune system, and regulates circadian rhythms, improving sleep quality. Mentally, it reduces stress, increases productivity, and fosters a positive atmosphere. 

Aluminium systems allow for expansive glazing areas, with options like floor-to-ceiling windows, skylights, and glass doors enhancing light flow. Internal glazing, such as glass partitions and internal doors, further distributes light throughout interior spaces. For a more comprehensive understanding of how to maximise natural light in your home, read our full guide “Maximising Natural Light Within the Home“. 

 

  1. Biophilic Design and Glazing

Biophilic design is an architectural approach that seeks to connect building occupants more closely to nature. Incorporating natural elements like light, vegetation, and materials enhances well-being and productivity. Aluminium glazing systems play a pivotal role in this design philosophy by providing unobstructed views through large windows and glass walls, maximising daylight, and creating seamless transitions between indoor and outdoor spaces with sliding or bi-folding doors. 

Decorative glazing can also incorporate natural motifs or materials, such as leaf patterns or organic textures, further enhancing the biophilic connection. To explore how glazing can be used to incorporate biophilic design into your home, check out our detailed article “Using Glazing to Incorporate Biophilic Design Into Your Home“. 

 

  1. Making a Statement with Glazing

Glazing can transcend its functional role to become a bold architectural statement. Oversized glazing, for instance, creates a striking visual impact and offers expansive views. Glass walls, whether fixed or operable, enhance modern aesthetics and can make the interior space feel larger and more connected to the outdoors. 

Pivot doors add innovation and elegance with their unique pivoting mechanisms, while glazing bars can introduce character, offering an industrial or traditional look depending on the design. Unique frame finishes, such as bold colours or contrasting finishes, can make the frames stand out as a design feature. Incorporating decorative glazing with coloured interlayers, patterns, or textures turns glazing into an art form. For inspiration on how to make a statement with your glazing, read our full article “Make a Statement About Your Home with Glazing“. 

 

  1. Choosing the Right Glazing for Your Architectural Style

Selecting glazing that complements your architectural style enhances the overall design and cohesion of a building. Different styles have distinct characteristics that influence glazing choices. 

Scandinavian Architecture 

Characterised by minimalism, natural light, and neutral colours, Scandinavian architecture benefits from slim-framed windows and doors with large glass areas. Neutral frame colours ensure the glazing blends seamlessly with the design. Aluminium systems are ideal here due to their slim profiles and versatility. For examples and recommendations, read more about aluminium glazing systems in our article “Which Glazing Is Right for Your Architecture Style?“. 

Period Properties (Victorian, Georgian, Edwardian) 

Traditional aesthetics often feature existing steel windows. Aluminium frames with glazing bars can mimic these traditional styles, such as those in the Sieger Legacy Range. This allows homeowners to retain the classic look while benefiting from modern performance. To see how aluminium glazing systems can enhance period properties, check out our case study “Nomansland with Steel Look Windows in St Albans“. 

Art Deco 

Known for bold colours, geometric patterns, and decorative elements, Art Deco properties can be enhanced with decorative glazing, bold frame colours, and unique shapes. Aluminium’s malleability allows for the creation of these intricate designs. For insights into glazing options suitable for Art Deco architecture, read our detailed guide “Which Glazing Is Right for Your Architecture Style?“. 

Cycladic (Greek Islands) 

With white exteriors, sharp corners, and high ventilation needs, Cycladic architecture suits large sliding or bi-folding doors for ventilation, minimalistic frames, and light-coloured finishes. Aluminium systems can meet these needs while providing durability against the harsh coastal climate. To learn more, explore our article “Which Glazing Is Right for Your Architecture Style?“. 

Modern and Contemporary Architecture 

Modern architecture features open floor plans and large windows or glass walls. Floor-to-ceiling glazing and slim-framed sliding doors are common. Contemporary architecture embraces innovative designs and sustainable features, making custom aluminium systems and energy-efficient glazing ideal choices. For inspiration, read about our project “Mount House“, which showcases aluminium glazing in a modern setting. 

 

  1. Aluminium Windows

Aluminium windows offer a blend of durability, aesthetics, and performance. Incorporating thermal breaks within the frames prevents heat loss and condensation, enhancing insulation and reducing energy costs. Design options are vast, with configurations ranging from fixed and side-hung to tilt-and-turn designs. 

Glazing choices include double or triple glazing, low-emissivity coatings, and decorative glass, all of which enhance performance and aesthetics. A wide array of finishes allows for seamless integration with any design. While aluminium windows may have a higher upfront cost compared to materials like uPVC, their long-term value due to durability and low maintenance makes them a wise investment. To explore the cost considerations in detail, read our article “How much do aluminium windows cost?“. 

For real-world applications, see our case study “Elgood Avenue“, where aluminium windows were used to great effect in a contemporary home. 

 

  1. Aluminium Doors

Entrance Doors 

Aluminium entrance doors combine strength, security, and style. They can incorporate glass panels to introduce natural light while maintaining security. Modern aluminium doors can be manufactured in larger sizes without compromising performance, allowing for grand entrances that make a statement. 

Advanced locking mechanisms, including multi-point locks and biometric systems, enhance safety. Customisable colours and textures ensure the door complements the property’s aesthetic. For guidance on choosing an aluminium entrance door, read our dedicated article “What to consider when choosing an entrance door“. 

For inspiration, check out our project “Chestnut Cottage“, where an aluminium entrance door added both elegance and security. 

Patio Doors for Indoor-Outdoor Living Spaces 

Indoor-outdoor living is a popular trend, and aluminium patio doors are at the forefront of this movement. Sliding doors offer expansive views with large glass panels that slide horizontally, ideal for seamless connections to the outdoors. Bi-folding doors consist of multiple panels that fold back to open up entire walls, perfect for creating wide, unobstructed openings. Casement doors, or French doors, provide a classic look with modern performance. 

Configurations can include corner setups, creating a floating roof effect when open, or bi-parting doors that slide or fold on both sides. Aluminium doors can be powder-coated in any RAL colour, with special finishes like anodising or wood effects available. For more on patio doors and configurations, explore our in-depth article “Patio Doors for Indoor-Outdoor Living Spaces“. 

Our project at Woodwind showcases the use of aluminium patio doors to create a harmonious indoor-outdoor living space. 

 

  1. Aluminium Bi-Folding Doors

Choosing the Right Bi-Folding Doors 

When selecting bi-folding doors, several factors come into play. Aluminium’s strength allows for larger panels with slim frames, enhancing the aesthetic appeal by providing more glass and less frame. Systems like the Sieger Lux Bi-Fold Door offer sightlines as narrow as 30mm. 

Configurations include inward or outward opening, stacking direction, and the inclusion of a traffic door for everyday use. Thermal performance is crucial, so ensure the doors have double or triple glazing and thermal breaks. To explore the process of specifying bi-fold doors, read our comprehensive guides “What to consider when specifying bifolding doors PT 1” and “What to consider when specifying bi-folding doors Part 2“. 

For a practical example, see our project “Barrington Park Gardens“, where aluminium bi-folding doors were used to stunning effect. 

Bifold Doors with Flush Thresholds 

Flush thresholds eliminate steps, creating a smooth transition between indoor and outdoor spaces. This is ideal for accessibility and family-friendly living. Integrated drainage systems handle weather conditions without compromising the flush design. For more information on flush thresholds and their benefits, check out our article “Bifold Doors With Flush Thresholds“. 

Our project at Chaucer Road demonstrates the seamless integration of bi-fold doors with flush thresholds in a modern home. 

 

  1. Slim Framed Sliding Glass Doors

How to Choose the Right Slim Sliding Doors 

Selecting the right slim sliding doors involves considering the complete framing details to maintain a sleek look. Performance levels are essential; look for systems that offer security features, thermal efficiency, and weather resistance without compromising aesthetics. Hardware options should be functional yet unobtrusive. 

Integration with space is also crucial—consider threshold options for seamless transitions and how the doors will connect interior and exterior spaces. For detailed guidance on choosing slim sliding doors, read our comprehensive article “How to Choose the Right Slim Sliding Doors“. 

Our Buckinghamshire House Contemporary Extension project showcases the elegance and functionality of slim-framed sliding doors in a residential setting. 

Advantages of Oversized Sliding Glass Doors 

Oversized sliding glass doors provide uninterrupted views, increased natural light, and a strong connection with outdoor areas. They enhance the brightness of interior spaces, reducing the need for artificial lighting, and advances in glazing technology reduce heat loss while managing solar gain. To explore the benefits of oversized sliding doors, read our in-depth article “Advantages of Oversized Sliding Glass Doors“. 

For inspiration, see our project “Mount House“, where oversized sliding doors create a stunning visual impact. 

 

  1. Open Plan vs. Broken Plan Living

Open plan living features large, undivided spaces combining kitchen, dining, and living areas. It enhances the sense of space and is ideal for social interaction but may present challenges with noise and privacy. Broken plan living retains the spacious feel while introducing elements that define and separate areas within the space. 

Methods include using internal glazing, such as glass partitions and doors, and physical barriers like half walls and levels. This approach offers flexibility, allowing spaces to be open or closed off as needed, and ensures natural light permeates throughout the space. For a detailed comparison and guidance on which is better for your home, read our article “​Broken Plan Living VS Open Plan Living: Which is Better?“. 

Our Villiers Mews Aluminium Glazing project illustrates the effective use of broken plan living with aluminium glazing solutions. 

 

  1. Steel vs. Aluminium Framed Glazing

When choosing between steel and aluminium framed glazing, several factors come into play. Cost is a significant consideration; aluminium is more cost-effective due to simpler manufacturing processes and lower material costs. Maintenance is another factor—aluminium requires minimal upkeep and is resistant to corrosion, whereas steel requires regular maintenance to prevent rust. 

In terms of frames and sightlines, steel is stronger and allows for potentially slimmer frames, but modern aluminium systems offer ultra-slim sightlines that rival steel aesthetics without the drawbacks. Thermal efficiency is also better with aluminium, as it typically includes thermal breaks, enhancing insulation and preventing thermal bridging. For an in-depth comparison, read our article “Steel vs Aluminium Framed Glazing“. 

 

  1. Frame Finishes: Polyester Powder Coating and RAL Colours

Polyester Powder Coating (PPC) 

PPC is a process where a dry powder is electrostatically applied to aluminium frames and then cured under heat to form a durable finish. This coating is resistant to chipping, fading, and scratching, and it emits no harmful solvents or pollutants. The standard marine-grade coating provides enhanced protection, especially in coastal areas. 

RAL Colours 

RAL is a European colour matching system that defines colours for paint, coatings, and plastics. With over 200 colours, including standard hues and special finishes, you can customise frames to match specific design schemes or create contrasting features. When selecting frame colours, consider whether you want them to blend with or highlight architectural elements. For a comprehensive guide on PPC and RAL colours, read our article “A Guide to Polyester Powder Coating and RAL Colours“. 

Our project at Woodwind showcases the effective use of unique frame finishes to complement the home’s design. 

 

  1. Advice for Homeowners and Self-Builders

Selecting the right supplier and installer is crucial for the success of your project. Ensure the company has experienced installers familiar with the products and adequate resources for timely completion. Check that they have proper logistics, equipment, and adherence to safety regulations. 

Project management is also key. Access to design support and technical advice is invaluable, as is consistent communication through a dedicated project manager or coordinator. Quality assurance comes from showroom visits to view products in person and seeing assembled and operational products. 

Making informed decisions involves understanding the look and feel of glazing systems, considering maintenance requirements, and balancing cost with long-term value and performance. For more detailed advice, read our article “Advice for Home Owners / Self Builders“. 

 

  1. How to Specify Aluminium Glazing Products

The specification process begins with consultation. Speak with experts to discuss your project’s needs and receive tailored advice. Utilise the company’s design team for assistance with specifications. 

Visiting showrooms allows you to see a range of products on display, compare options, and observe the operation of systems. Obtaining detailed quotations ensures the proposed solutions fit within your financial parameters. 

Specification documentation, such as NBS specifications and product data sheets, helps include precise product details in project specifications. When ordering, confirm all details before finalising the purchase, and work with a dedicated project manager for coordination. For a step-by-step guide on specifying aluminium glazing products, read our article “How to Specify a Sieger Systems Product“. 

 

  1. Locking Options and Security Features

Locking Options for Aluminium Glazing Systems 

Security is paramount in any property, and aluminium glazing systems offer various locking mechanisms tailored to different types of windows and doors. 

Bifold Doors

These often use lever/lever handles with a Euro cylinder key lock for pass or traffic doors, allowing operation from both inside and outside. Shoot bolt latches secure the folding panels together and are typically operated from the inside. Integrated locking systems in high-quality bifold doors may offer enhanced security. 

Sliding Doors

These usually feature a Euro cylinder key lock integrated into the handle, allowing secure locking from both sides. Minimalistic designs with flush handles may have concealed locking mechanisms, though some may not support key locking. 

Casement Doors

These utilise lever handles with Euro cylinder locks, sometimes requiring a lockbox due to slim frame profiles. Pivot Doors often have integrated multi-point locking operated by a lever handle with a key lock. 

For a detailed overview of locking options, read our article “Locking Options for Sieger Glazing Systems“. 

Window Restrictors: Are They Necessary? 

Window restrictors are devices that limit how far a window can open, providing safety and security benefits. They are particularly important in homes with young children or in buildings like hospitals, schools, and care homes. Types of window restrictors include limiting restrictors, safety restrictors, child safety restrictors, holding restrictors, and reverse restrictors. 

Compliance with British Standards BS EN 14351-1 and BS EN 13126-5 ensures the restrictors meet safety requirements. For more information on window restrictors and their necessity, read our article “Are window restrictors necessary?“. 

Security Ratings: Understanding PAS 24 and Secured by Design 

Ensuring that windows and doors meet security standards is crucial for safety and compliance. PAS 24 is a British standard for enhanced security performance of doors and windows, involving rigorous testing against forced entry using common methods. Secured by Design is a police-backed program promoting security standards in building design, requiring products to pass PAS 24 testing and meet additional criteria. 

European Standards EN 1627 provide RC (Resistance Class) ratings that indicate the level of resistance to forced entry. RC2/WK2 is a common standard for patio doors, demonstrating protection against tools like screwdrivers and pliers. For a comprehensive guide on security ratings, read our article “A Guide to Security Ratings“.

 

  1. Maintenance and Longevity of Aluminium Glazing

How to Prolong the Life of Your Aluminium Glazing 

Aluminium glazing systems are known for their durability and low maintenance, but proper care can extend their lifespan even further. 

Protective Coatings

Polyester Powder Coating (PPC) provide a protective layer against corrosion and weathering. Marine-grade coatings are recommended for harsh environments. 

Regular Cleaning

This is essential. Clean frames and glass at least twice a year using appropriate cleaning products—avoid harsh chemicals and use soft cloths to prevent scratching. 

Annual Checks

These involve inspecting for damage, ensuring locks and hinges operate smoothly, and checking seals and gaskets to maintain thermal performance. 

Maintenance of Moving Parts

This includes applying appropriate lubricants to moving parts if recommended by the manufacturer. 

For detailed tips on prolonging the life of your aluminium glazing, read our maintenance guide “How to prolong the life of your aluminium glazing“. 

 

  1. Aluminium vs. Other Materials

    When comparing aluminium to other materials like uPVC, timber, and steel, several factors emerge. 

Aluminium vs. uPVC:

Aluminium offers greater durability, supporting larger glass areas with slimmer frames and providing more design flexibility with custom finishes. It is also more environmentally friendly due to its recyclability. 

Aluminium vs. Timber:

Aluminium requires less upkeep than timber, which can warp or rot without regular care. Aluminium has a longer lifespan and can mimic timber aesthetics with special finishes. 

Aluminium vs. Steel:

Aluminium is more cost-effective due to lower material and manufacturing costs. It is naturally corrosion-resistant and often includes thermal breaks, enhancing thermal performance over steel. 

For a detailed comparison, read our article “Steel vs. Aluminium Framed Glazing” and our article “Is Aluminium Environmentally Friendly?“. 

 

  1. Cost Considerations for Sliding Doors

Several factors influence the cost of sliding doors, including size and complexity, glazing specification, frame material and finishes, and installation requirements. 

Size and Complexity:

Larger doors with more panels or complex configurations will increase costs. 

Glazing Specification:

Options like triple glazing, low-iron glass, or special coatings add to the price. 

Frame Material and Finishes:

Special finishes or colours beyond standard options may incur additional costs. 

Installation Requirements:

Site-specific factors, such as accessibility and structural requirements, can affect installation costs. 

A general price guide: 

Standard aluminium sliding doors start around £550 per square metre. 

Slim sliding doors are approximately £750 per square metre due to the advanced engineering required for minimal sightlines. 

Oversized sliding doors are around £850 per square metre, reflecting the specialised manufacturing and handling of large glass panels. 

For a comprehensive price guide, read our article “A price guide for sliding doors“. 

 

  1. Conclusion

Aluminium glazing systems offer a harmonious blend of aesthetics, performance, and sustainability. Their versatility accommodates a wide range of designs, from slim-framed windows to grand entrance doors. With superior thermal efficiency, durability, and low maintenance, aluminium systems enhance property value and comfort. 

Understanding the advantages and options available allows you to make informed decisions that align with your architectural vision and project requirements. Whether you’re embracing biophilic design, making a bold statement with glazing, or seeking to maximise natural light, aluminium glazing systems provide the solutions you need. 

 

  1. Contact Us

Ready to transform your space with high-quality aluminium glazing systems?

Contact Us Now!

Contact Us Now!


Get a Quote