Last Updated on May 2, 2025

How Long Do Aluminium Windows Last?

Aluminium windows have grown in popularity across the UK  and it’s easy to see why. From their sleek aesthetic and impressive strength to their low maintenance needs, aluminium frames offer a modern solution for both domestic and commercial buildings. 

But one common question homeowners and landlords ask before investing is: how long do aluminium windows last?

In this expert guide, we’ll break down the expected lifespan of aluminium windows, what factors affect their longevity, how they compare to other materials, and how to get the most value from your investment. 

Whether you’re a homeowner looking to upgrade your windows or a landlord planning a long-term property improvement, this guide is for you.

How Long Do Aluminium Windows Last?

On average, aluminium windows can last between 30 and 45 years when properly installed and maintained. That’s significantly longer than uPVC windows (which typically last 20–25 years) and timber frames (which may last 20–35 years depending on upkeep).

Why Aluminium Windows Last So Long

Several key factors contribute to the longevity of aluminium windows:

1. Corrosion Resistance

Modern aluminium windows are coated with a protective layer,  often powder-coated that prevents rust and corrosion, even in the UK’s famously damp climate. This is particularly valuable for coastal properties or homes exposed to heavy rainfall.

2. Structural Strength

Aluminium is a robust and rigid material. It doesn’t warp, bend or rot like timber, and it resists thermal expansion better than uPVC. This makes it ideal for large panes and frequent use — especially in high-traffic commercial settings.

3. Low Maintenance Requirements

You won’t need to sand, repaint or treat aluminium like you would with wooden windows. Occasional cleaning and hardware checks are all it takes to keep them performing like new.

Factors That Affect How Long Aluminium Windows Last

While aluminium windows are inherently durable, a few variables can impact how long they last in real-world conditions:

• Installation quality – Poorly installed frames can allow water ingress or thermal bridging, leading to faster wear.
  
• Coating quality – High-quality powder coatings can greatly extend lifespan.
  
• Environment – Properties in coastal areas may face more salt exposure, which requires more durable finishes.
  
• Maintenance – A well-maintained frame will always outlast a neglected one.

Comparing Aluminium Windows to Other Window Types

When you compare the lifespan and upkeep of each material, aluminium clearly comes out on top especially when viewed as a long-term investment for UK properties.

Curious About the Cost of New Aluminium Windows?

Knowing that aluminium windows can last decades is one thing — but how much do they actually cost?.

We’ve broken down prices based on frame material, property type, and energy efficiency ratings so you can get a clearer idea of what to budget for. Our guide on aluminium window costs is particularly helpful for homeowners and landlords wanting a full breakdown before committing.

By understanding the lifespan and cost side-by-side, you’ll be able to make a smarter, more informed decision for your home or rental property.

Tip: Aluminium might have a higher upfront cost, but its longevity often means better value over time.

How to Maximise the Lifespan of Your Aluminium Windows

To get the most out of your investment:

• Schedule regular inspections – Especially for seals, locks, and drainage slots.
  
• Clean frames twice a year – Use a soft cloth and mild detergent.
  
• Ensure proper installation – Always work with FENSA-registered installers who know the local building regs.
  
• Choose premium coatings – Like marine-grade powder coating if you’re near the coast.

Ready to Upgrade? Request Your Free Window Replacement Quote Today

It’s one thing to know the facts — it’s another to take action.

Our expert team is ready to help you find the perfect aluminium window solution for your property. Whether you’re replacing a single window or refurbishing an entire home or building, we’ll guide you through the best options and pricing available in your area.

Request your free window replacement quote.

There’s no obligation, just straightforward advice and a competitive quote tailored to your needs.

Final Thoughts

If you’re looking for a long-lasting, low-maintenance and modern window solution, aluminium is hard to beat. Whether you’re upgrading your own home or investing in a buy-to-let, the long lifespan and minimal upkeep of aluminium make them a wise choice.

Combine that with excellent energy efficiency (when paired with high-performance glazing), and aluminium offers both form and function for the long haul.