When choosing new windows for your home, two of the most popular materials are UPVC and Aluminium. Both offer distinct advantages in terms of performance, durability, and style, but the right option depends on your budget, property type, and personal preferences.
In this guide, we’ll compare UPVC and aluminium windows side by side to help you make the best decision.
What Are UPVC and Aluminium Windows?
- UPVC (Unplasticised Polyvinyl Chloride) windows are made from a rigid plastic material that is low-maintenance, energy-efficient, and affordable.
- Aluminium windows are crafted from strong, lightweight metal frames that are sleek, modern, and long-lasting.
Explore our full range of UPVC Windows and Aluminium Windows to see what’s available.
Pros and Cons of UPVC Windows
Advantages of UPVC Windows
- Cost-Effective: UPVC windows are usually cheaper than aluminium, making them ideal for budget-conscious homeowners.
- Energy Efficiency: Multi-chambered frames provide excellent insulation, helping reduce heating bills.
- Low Maintenance: They won’t rust, rot, or warp. Cleaning with soapy water is enough to keep them looking like new.
- Variety of Styles: Available in casement, flush casement, tilt & turn and sliding sash designs.
Popular choices: Casement UPVC Windows and Flush Casement Windows
Disadvantages of UPVC Windows
- Shorter Lifespan: While durable, UPVC windows generally last around 20–25 years, compared to longer-lasting aluminium.
- Bulkier Frames: UPVC frames are thicker, which can slightly reduce natural light.
- Low Maintenance: They won’t rust, rot, or warp. Cleaning with soapy water is enough to keep them looking like new.
- Limited Colour Options: Although woodgrain and colour foils exist, the palette is more limited than aluminium. However, UPVC windows can also be sprayed to provide a bigger choice of colour options.
Pros and Cons of Aluminium Windows
Advantages of Aluminium Windows
- Slim, Modern Frames: Aluminium allows for larger glass areas and more natural light.
- Durability: Resistant to warping and weathering, with a lifespan of 40+ years.
- Customisation: Available in hundreds of RAL colours and finishes, including dual-colour frames.
- Strength: Ideal for large windows, such as floor-to-ceiling designs or Aluminium Bifold Doors
See our selection of Aluminium Windows
Disadvantages of Aluminium Windows
- Higher Cost: Aluminium windows are more expensive than UPVC.
- Thermal Performance: While modern aluminium windows include thermal breaks, UPVC usually performs better in insulation.
UPVC vs Aluminium: A Quick Comparison
Feature |
UPVC Windows |
Aluminium Windows |
|---|---|---|
| Cost | Lower | Higher |
| Energy Efficiency | Excellent | Very Good (with thermal break) |
| Durability | 20-25 Years | 40+ Years |
| Aesthetics | Traditional & Versatile | Sleek & Modern |
| Maintenance | Very Low | Low |
Which Option Is Right for You?
- Choose UPVC if you want an affordable, energy-efficient solution with minimal upkeep.
- Choose Aluminium if you’re looking for a long-lasting, modern design that maximises light and space.
Ready to upgrade? Browse our full selection of Windows,Doors, and Bifold Doors to find the perfect match for your home.
Both UPVC and aluminium windows offer excellent benefits, but the right choice depends on your style preferences, budget, and long-term goals. Whether you’re after the traditional look of UPVC or the sleek design of aluminium, Window and Door Supplies Ltd has a wide range of options to suit every home. Contact Us Today for your FREE no obligation quote.









