Aluminium vs Composite Doors: Pros and Cons

Published 19 May 2025 by Bella

Choosing the right front door for your home is a daunting task for many homeowners. With the growing popularity of more sustainable yet stylish alternatives, weighing the pros and cons of the available door materials is crucial to ensure that your decision is well-informed and the ideal fit for you. Each material on the market offers unique benefits and drawbacks, making aluminium and composite doors suitable for a wide range of needs and preferences. In this guide, we will explore the pros and cons of aluminium doors and composite doors to give you confidence in your choice of door.

Understanding Aluminium Doors

Aluminium doors are constructed from solid aluminium, which is known for its strength and durability. This, along with their sleek and modern aesthetics, makes them an increasingly popular choice amongst UK homeowners, as well as being an ideal choice for the unpredictability of British weather conditions.

At Sternfenester, our Aluminium door range is as expansive as it is durable. Our collection of aluminium doors includes rear house additions, such as aluminium bifold doors and aluminium patio doors, as well as front doors, including Smart doors and Aluminium Residential Doors.

white aluminium front door

Aluminium Door Advantages

The unique properties of this material make it a desirable choice for many homeowners, but what are the key benefits of an aluminium door?

  • A standout advantage of selecting aluminium for your door is its superior durability. Aluminium doors are incredibly strong and resistant to corrosion, meaning that they can last for decades without significant wear and tear. This makes them an excellent long-term investment, as you can rest assured that your aluminium door can withstand the elements for decades to come.
  • Unlike timber doors, which may require more frequent painting or staining, aluminium doors are one of the easiest types to maintain. All that would be needed to take care of your aluminium door could be a simple wipe down with a damp cloth to keep it looking fresh.
  • Modern aluminium door designs can be equipped with thermal breaks and double glazing, which help reduce heat transfer. As a result, your home will stay warmer in the winter, cooler in the summer, and there will be a noticeable drop in your energy bills.
  • Aluminium doors are robust and often come with multi-point locking systems, providing excellent security for your home.
  • With its slimline profiles and contemporary design, aluminium doors can enhance the overall look of your home inside and out. At Sternfenster, our aluminium doors can be highly customised in a range of colours and finishes for a uniquely personalised door for your home.
green aluminium front door


Disadvantages of Aluminium Doors

Though aluminium is a highly sought-after material for front doors, there are some disadvantages to it, too.

  • Generally, a common off-putting aspect is that they are more expensive than other door options, such as composite doors. While they are a worthwhile investment, the upfront cost can be higher.
  • The thermally conductive properties of aluminium mean that they are an effective conductor of heat, subsequently making them cold to the touch. On the other hand, modern advancements in design have significantly reduced this issue in many aluminium doors.
  • In comparison to composite doors, the colour options for aluminium doors may not be quite as extensive.
modern aluminium patio doors

Exploring Composite Doors

Composite doors are constructed from a combination of materials, including timber, uPVC, and glass-reinforced plastic (GRP). This blend yields the unique properties of compost doors, offering a comprehensive list of advantages to enhance the performance of your home.

Composite Door Advantages

While aluminium doors are a relatively recent addition to the home improvement market, composite doors are gaining popularity among homeowners for their distinct advantages.

  • Composite doors are designed to withstand the elements, with a core created from timber or uPVC and a weatherproof outer skin of GRP, which can typically have a lifespan of several decades.
  • With its solid core and insulating materials, a composite door is exceptionally good at retaining heat. This can create a comfortable living environment year-round and ultimately lead to significant energy savings over time.
  • Like aluminium doors, composite doors require minimal upkeep. They don’t need painting or staining and can be easily cleaned with soap and water.
  • Composite doors are often equipped with advanced locking mechanisms, making them a secure choice for homeowners.
  • They come in a wide variety of styles, colours, and finishes. Therefore, whether you prefer a traditional look with a woodgrain finish or a modern, minimalist style, there is a strong likelihood that a composite door will fit your vision.
white composite front door

Disadvantages of Composite Doors

  • While composite doors are generally more affordable than aluminium doors, they can still be on the pricier side compared to uPVC or timber doors.
  • Over a long time, the colour of composite doors may slightly fade, particularly if they are exposed to direct sunlight. However, this can be mitigated by choosing Sternfenster’s high-quality finishes.
  • Composite doors can be heavier than the lightweight quality of aluminium doors. This could affect the ease of operation.

Key Differences Between Aluminium and Composite Doors

When considering which type of door is the perfect match for your home, it is essential to consider the key differences between the two.

  • Aluminium doors are lighter than composite doors, making them easier to handle.
  • Composite doors generally offer better thermal efficiency due to their solid core, while aluminium doors require thermal breaks to achieve similar performance.
  • While both types of doors are durable, aluminium doors can last longer than composite doors.
  • Composite doors provide a broader range of styles and colours, making them more versatile for various home designs.

If you’re looking for a modern, low-maintenance option with excellent durability and security, aluminium doors may be the right choice for you. On the other hand, if you prefer a wider range of styles and colours, along with superior thermal efficiency, composite doors could be a better option.

aluminium and composite doors

Get Your Quote Today at Sternfenster

Both aluminium and composite doors offer a similar range of superior benefits, with particular areas in which they specialise. So, when you make the final decision on your door, you are guaranteed to experience an enhanced living environment. By considering your priorities, such as budget, design preferences, and energy efficiency, you can make an informed decision that enhances your home’s value and comfort.

Ready to explore your options? Contact us or use our free online quoting engine today to get a personalised quote tailored to your needs. We’d love to help you find the perfect door for your home.

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