Aluminium vs Timber Window Frames

Double Hung Window on a heritage-listed house reglazed in Hush 6.5 laminated glass by Adelaide Glaziers

Both aluminium and timber are popular materials for window frames, and each has its own set of advantages and disadvantages. Below is a comparison of the two:

Aluminium Window Frames


  1. Durability and Maintenance: Aluminium is resistant to corrosion, termites, and weathering. It requires minimal maintenance.
  2. Cost: Aluminium frames can be less expensive than timber frames.
  3. Slim Profiles: Aluminium frames can be made thinner than timber, potentially allowing more natural light into the room.
  4. Recyclability: Aluminium is highly recyclable and can be reused multiple times without losing quality.
  5. Variety of Finishes: Aluminium frames can be powder-coated in various colors to suit different aesthetics.


  1. Thermal Conductivity: Aluminium conducts heat more easily than timber, which can be a disadvantage in terms of energy efficiency. However, this can be mitigated with thermal breaks.
  2. Aesthetic Limitations: Some people prefer the natural look of timber over the more modern appearance of aluminium.

Timber Window Frames


  1. Aesthetic Appeal: Timber frames offer a warm, classic, and timeless aesthetic that can complement various architectural styles.
  2. Insulation: Wood is a natural insulator, providing better thermal performance compared to aluminium.
  3. Customization: Timber can be easily painted or stained to change the appearance or to match the interior or exterior decor.
  4. Renewable Resource: Timber is a renewable resource and may be more environmentally friendly if sourced sustainably.


  1. Maintenance: Timber frames require regular maintenance, such as painting or staining, to protect against rot, insects, and weathering.
  2. Cost: High-quality timber frames can be more expensive than aluminium.
  3. Durability: Without proper maintenance, timber can be susceptible to environmental damage over time.


Choosing between aluminium and timber window frames depends on several factors including budget, aesthetic preferences, maintenance willingness, climatic conditions, and energy efficiency requirements. Both materials have their pros and cons, and understanding these can help in making an informed decision.


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