Aluminium vs uPVC Bi Fold Doors – Which Should You Choose?

Bi fold doors have become a popular feature in UK homes, offering wide openings, improved natural light, and a seamless connection between indoor and outdoor spaces. But when it comes to choosing the right material, homeowners often find themselves weighing up two key options: aluminium or uPVC.

Each type comes with its own advantages—so how do you decide which one is right for your home?

This guide explores the differences in performance, appearance, cost, and durability to help you make the best decision for your space and lifestyle.

What Are Bi Fold Doors?

They are made up of multiple panels that fold and slide along a track to open up an entire wall. When fully opened, they create a wide, unobstructed opening—perfect for connecting kitchens, lounges, or dining areas with patios, gardens, or balconies.

Available in a range of styles, colours, and configurations, bi fold doors offer a sleek, modern alternative to traditional patio or French doors.

Aluminium Bi Fold Doors – Sleek, Strong and Slimline

They are known for their strength and slim profiles. This allows for larger panes of glass and better views, making them ideal for design-conscious homeowners.

Key Benefits:

• Slimline frames maximise natural light and views.
• Durable finish resists warping, rust and fading.
• Contemporary look suits modern and minimalist homes.
• Powder-coated colours offer long-lasting vibrancy.

These doors are particularly popular in new-builds and extensions where a modern finish is desired. Black bi fold doors and anthracite grey are among the most sought-after shades for aluminium frames.

However, they do tend to come at a higher price point than uPVC, reflecting their premium appearance and engineering.

uPVC Bi Fold Doors – Cost-Effective and Low Maintenance

For homeowners seeking a more budget-friendly option, uPVC bi fold doors offer great value without compromising on performance.

Key Benefits:

• Lower cost makes them ideal for renovations and upgrades.
• Good thermal insulation helps keep your home energy efficient.
• Low maintenance—no painting or treating required.
• Available in a wide range of finishes including white bi fold doors and wood-effect options.

While uPVC bi fold doors have slightly chunkier frames than aluminium, modern designs have improved greatly in aesthetics and performance, making them a practical and attractive solution.

Energy Efficiency and Insulation

Both aluminium and uPVC doors offer strong performance when fitted with double glazing or triple glazing, but their energy efficiency depends on the frame’s construction.

• uPVC is a naturally insulating material, making energy efficient bi fold doors easier to achieve at a lower cost.
• Aluminium, when thermally broken (using a thermal barrier within the frame), also provides excellent insulation but may require more advanced engineering to match uPVC’s natural performance.

Style and Customisation

From classic white to bold black bi fold doors, both materials offer a wide range of customisation.

• Aluminium excels in delivering modern doors with ultra-slim sightlines and custom powder-coated colours.
• uPVC can replicate traditional finishes such as woodgrain, making it ideal for older homes or those seeking a softer aesthetic.

Durability and Lifespan

• Aluminium doors are extremely durable and can last over 40 years with minimal maintenance.
• uPVC doors typically last 20–25 years, still offering great longevity for a lower price.

If you’re after the longest lifespan and a premium finish, aluminium has the edge. If you’re looking for affordability and performance, uPVC is a solid contender.

To explore our full range of bi fold doors, including aluminium and uPVC options, visit SAJE UPVC today.

Which Should You Choose?

Your choice between aluminium and uPVC bi fold doors depends on your priorities. If you’re aiming for sleek aesthetics, ultra-slim frames, and maximum durability, aluminium bi fold doors are hard to beat. But if you’re seeking an affordable, energy-efficient solution with plenty of style options, uPVC bi fold doors are an excellent alternative.

At SAJE UPVC, we supply and install high-quality bi fold doors in both materials—helping you achieve the perfect balance of design, performance, and value.

FAQs

Q1: Are aluminium bi fold doors better than uPVC?
A1: Aluminium offers a slimmer profile and longer lifespan, but uPVC is more budget-friendly and still performs well.

Q2: Are they secure?
A2: Yes. Both aluminium and uPVC bi fold doors feature multi-point locking systems and toughened glass for high security.

Q3: Can I customise the colour?
A3: Absolutely. Both aluminium and uPVC options come in a wide range of colours and finishes to match your home.