Timber Windows vs Aluminium Windows: A Comprehensive Comparison

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Experts in Sash Windows Repair & Restoration, Timber Windows & Timber Doors in east midlands

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Sash Windows Refurbish specializes in providing repair and restoration services for wooden windows and doors in the UK, as well as various types of carpentry. During the process of fulfilling orders, we utilize a range of tools and paints, including saws, sprays, primers, resins, and adhesives. With more than 20 years of experience in carpentry, we have tested and used various brands and types of work tools, making us well-equipped to offer helpful advice on selecting the right tools and paints for your needs. Read more ...

Exploring the Advantages of Aluminium Windows

Aluminium windows offer several advantages that make them a popular choice among homeowners and architects alike. One of the key benefits is their durability. Aluminium is a robust material that can withstand harsh weather conditions, making it a long-lasting option for windows.

Additionally, aluminium windows are lightweight, which makes them easy to handle and install. They also require minimal maintenance, as they are resistant to rust and corrosion. Another advantage is their modern and sleek appearance, enhancing the overall aesthetic of any property.

Use this chart to swiftly assess and contrast the two materials:

Feature Aluminium Windows Timber Windows
Material Lightweight and durable aluminum Natural and traditional timber
Strength Strong, resistant to rust and corrosion Strong, especially hardwoods like oak
Insulation Good thermal conductivity Natural insulator, offers good thermal insulation
Maintenance Low maintenance, easy to clean and maintain Requires regular painting and sealing
Customization Highly customizable in terms of design Can be customized but limited compared to aluminum
Aesthetics Modern and sleek appearance Classic, warm, and natural appearance
Energy Efficiency Can be thermally broken for better efficiency Good insulating properties, energy-efficient
Environmental Impact Recyclable, eco-friendly options available Renewable resource, eco-friendly if sourced sustainably
Cost Generally more affordable than timber Higher initial cost, but long-term value
Durability Resistant to weather and UV rays Prone to rot and insect damage over time
Installation Usually easier and quicker to install Requires skilled carpentry for proper installation

Pros of Aluminium Windows:

  1. Durability: Aluminum windows are highly durable and can withstand harsh weather conditions, making them suitable for various climates.
  2. Low Maintenance: Aluminum windows are low maintenance and do not require regular painting or sealing. They are resistant to rust and corrosion.
  3. Lightweight: Aluminum is a lightweight material, making it easier to handle and install compared to other materials like wood or steel.
  4. Energy Efficient: Aluminum windows can be designed with thermal breaks to improve energy efficiency, reducing heat loss and enhancing insulation.
  5. Modern Aesthetics: Aluminum windows offer a sleek and modern appearance, making them popular for contemporary architectural designs.
  6. Recyclability: Aluminum is a highly recyclable material, making it an eco-friendly choice. It can be recycled repeatedly without losing its quality.
  7. Customization: Aluminum windows can be easily customized to fit specific sizes and shapes, allowing for a wide range of design options.
  8. Sound Insulation: With proper installation and insulation, aluminium windows can provide good sound insulation, reducing external noise levels.
  9. Fire Resistance: Aluminum is non-combustible and offers a high level of fire resistance, enhancing the safety of the building.
  10. Longevity: Aluminum windows have a long lifespan and can last for many years without significant degradation in performance.

Examining the Drawbacks of Aluminium Windows

However, it’s essential to consider the disadvantages of aluminium windows as well. One significant drawback is their poor insulation properties. Aluminium is an excellent conductor of heat, leading to potential energy loss in homes. To counter this, homeowners might need to invest in additional insulation solutions, increasing the overall cost. Additionally, aluminium windows may not be as environmentally friendly as timber windows, as the production process involves higher energy consumption.

Cons of Aluminium Windows:

  1. Heat Conductivity: Aluminum is a good conductor of heat, which can lead to poor insulation if not properly designed with thermal breaks.
  2. Condensation: Aluminum windows can be prone to condensation, especially in humid conditions, which might lead to mould growth if not managed properly.
  3. Initial Cost: Aluminum windows can be more expensive than some other materials upfront, although they might save money in the long run due to their durability and low maintenance requirements.
  4. Limited Color Options: While aluminium windows can be powder-coated in various colours, the range of options might be limited compared to vinyl or uPVC windows.
  5. Galvanic Corrosion: When in contact with certain metals, aluminium can experience galvanic corrosion, leading to degradation over time. Proper insulation and choice of materials can mitigate this issue.
  6. Impact on the Environment: Although aluminium is recyclable, the production process can be energy-intensive, potentially impacting the environment if not sourced responsibly.
  7. Not Ideal for Extreme Cold: Aluminum is not the best insulating material, so in extremely cold climates, it might not provide the same level of insulation as other materials like wood or vinyl.
  8. Maintenance of Hardware: While the aluminium frames are low maintenance, the hardware components (handles, locks, etc.) might require maintenance over time to ensure smooth operation.

Highlighting the Benefits of Timber Windows

Timber windows have their unique set of advantages that appeal to many individuals seeking a classic and timeless look for their homes. One of the primary benefits is their excellent insulation properties. Timber acts as a natural insulator, helping to keep homes warm in winter and cool in summer, thus contributing to energy efficiency. Timber windows also have a warm and inviting aesthetic, adding a touch of elegance to any home. Furthermore, timber is a renewable resource, making it a more environmentally friendly choice compared to aluminium.

Pros of Timber Windows:

  1. Natural Beauty: Timber windows offer a warm, classic, and natural aesthetic that many people find appealing.
  2. Insulation: Timber is a natural insulator, providing good thermal performance and helping with energy efficiency.
  3. Customization: Timber windows can be easily customized to fit specific sizes and designs, allowing for greater flexibility in architectural styles.
  4. Environmentally Friendly: Timber is a renewable resource, making it an environmentally friendly choice. Additionally, timber windows can be recycled and are biodegradable.
  5. Durability: High-quality timber, especially hardwoods like oak and mahogany, is durable and can withstand wear and tear for a long time if properly maintained.
  6. Repairable: Timber windows can be easily repaired if damaged, allowing for a longer lifespan compared to some other materials.
  7. Sound Insulation: Timber has natural sound insulation properties, providing a quieter indoor environment.

Considering the Limitations of Timber Windows

While timber windows offer various benefits, they also come with certain limitations. One notable drawback is the maintenance requirement. Timber windows need regular painting or staining to protect them from the elements and maintain their appearance. Failure to do so can lead to issues such as rot or warping, requiring costly repairs. Additionally, timber windows are generally more expensive upfront compared to aluminium windows, which might deter budget-conscious homeowners.

Cons of Timber Windows:

  1. Maintenance: Timber windows require regular maintenance, including painting, sealing, and potential treatments to protect against pests and rot. Failure to maintain them properly can lead to deterioration.
  2. Cost: Timber windows are often more expensive upfront compared to some other materials, such as vinyl or aluminium.
  3. Vulnerability to Moisture: If not properly sealed and maintained, timber windows can be susceptible to moisture damage, leading to rot, warping, and decay.
  4. Limited Color Options: While timber can be painted, the colour options might be more limited compared to materials like vinyl, which comes in a wide variety of pre-finished colours.
  5. Insect Infestation: Timber windows, especially if not treated properly, can be susceptible to insect infestations like termites, which can cause significant damage.
  6. Longer Installation Time: Timber windows might take longer to install compared to some other materials due to the need for precise fitting and finishing work.

Conclusion: Making the Right Choice for Your Home

In conclusion, the choice between timber windows and aluminium windows depends on your specific needs and preferences. If you prioritize durability, low maintenance, and a modern aesthetic, aluminium windows might be the ideal choice for you. On the other hand, if you appreciate the classic charm, excellent insulation properties, and eco-friendly nature of timber, then timber windows could be the perfect fit.


Are wooden windows better than aluminium?

Wooden windows are often considered better than aluminium for their natural aesthetics, superior insulation properties, and eco-friendly appeal. They provide better thermal efficiency and can enhance the overall appearance of a home.

Which is cheaper, wooden or aluminium windows?

Generally, aluminium windows tend to be more affordable than wooden ones. Aluminum is a cost-effective material and is widely used in various construction projects. However, the overall cost can vary based on factors such as design, size, and additional features.

What are the disadvantages of wooden window frames?

Wooden window frames are susceptible to moisture, rot, and insect damage, requiring regular maintenance to prevent these issues. They can also be more expensive upfront compared to other materials. Additionally, wooden frames might need refinishing over time, adding to the maintenance costs.

What is the disadvantage of having aluminium windows?

The main disadvantage of aluminium windows is their poor thermal insulation properties. Aluminum is a good conductor of heat, which can lead to heat loss in colder months and heat gain in warmer months. This can result in higher energy bills and less energy efficiency compared to other window materials.

About the author

Glen Ramsey, who presently holds the positions of customer support and content manager, is a cherished member of the Sash Window Refurbish team. He is in a unique position to provide advice on all questions pertaining to the renovation of historic windows because he has a wealth of experience in all elements of window renovation, dealing with clients regularly and assisting them in choosing the best window-related course of action. He oversees the creation of information for all of our platforms in his capacity as content manager, including web content and other materials. Glen has witnessed the whole gamut of Sash Window Refurbish's window restoration activities, from our work on significant listed Georgian homes to a wide variety of smaller-scale private residential projects.


My technician Andrew replaced all my sash windows that had rotten sills. Accessing the rotten sills was not an easy task. He explained to me what needed to be done in order to fix the problem. He is a great person and I’m happy that he was the one who did the job. He is reliable, tidy, friendly and very professional. I highly recommend him.



I hired Andrew and Alex a while back to repair my damaged sash windows. They were was very considerate and very patient as he did his job. A few days ago, I had another problem with one of my sash lock keys and I called him again to come and fix the problem. I’m very impressed that Liam responded quickly and he not only fixed the problem but he also gave me a spare key. What a great after sales service!

Alan W.


I’m very impressed with the new windows that Andrew installed and also the reconditioning job that he did on other sash windows. The quality of his work is by far more superior than what we got when we hired another company a few years back. We will certainly hire him again if any window work arises

Kelly (Sleaford)


Our decorator referred us to Andrew because some of the work needed a window expert. Andrew together with our decorator did a fantastic job. The work was done efficiently and to the highest standards. Andrew is understanding, committed and very professional. I recommend him without any hesitation.

Steaven Reader


Alex did a great job in fixing windows in our terraced house. The windows were broken, frames damaged and the wood was also rotten. Alex's job was high quality and he did it pretty fast. I was also very impressed that he was considerate of my son’s asthma condition and maintained cleanliness. Top work.



Andrew just recently replaced three sash windows in my Edwardian house. He also repaired and replaced some sills and draught proofed three windows. In addition to that, he also did some carpentry work. What I like the most about Liam is that he did a clean job. He is very professional and always updated me about the timescales and costs. He also did his job with minimal disruptions. I highly recommend him.

Cris M.