1. Material and Durability:

uPVC: uPVC is a plastic material known for its durability, resistance to rot, corrosion, and pests. It requires minimal maintenance and is suitable for various climates.
Aluminium: Aluminium is a lightweight and strong metal. It is resistant to weather elements and does not corrode, providing excellent durability and requiring minimal maintenance.

2. Thermal Insulation:

uPVC: uPVC has decent thermal insulation properties, helping to maintain indoor temperatures and potentially reducing energy costs.
Aluminium: Aluminium frames can be thermally improved with a thermal break, enhancing their insulation, but they might still have lower insulation capabilities compared to uPVC.

3. Aesthetic and Customization:

uPVC: uPVC frames offer a variety of styles and colors but may have limitations in non-standard colors or finishes.
Aluminium: Aluminium frames can be easily customized to various designs, with a wide range of colors and finishes, allowing for more design flexibility.

4. Strength and Security:

uPVC: While durable, uPVC might be relatively less sturdy than aluminium, which could impact security.
Aluminium: Aluminium's strength-to-weight ratio is higher, making it more robust and potentially offering better security.

5. Environmental Impact:

uPVC: uPVC is not biodegradable and involves chemicals in its production. It can be recycled, but proper recycling processes are crucial to reduce environmental impact.
Aluminium: Aluminium is fully recyclable and has a lower environmental impact, requiring less energy for recycling compared to its initial production.

6. Maintenance:

uPVC: Requires minimal maintenance, usually just cleaning to keep it looking good.
Aluminium: Similarly low-maintenance, with occasional cleaning to remove dirt and debris.

7. Cost:

uPVC: uPVC is often more affordable than aluminium, making it a budget-friendly option.
Aluminium: Aluminium frames can be more expensive due to the higher cost of materials and manufacturing processes.

8. Sound Insulation:

uPVC: uPVC offers decent sound insulation, reducing noise intrusion from outside.
Aluminium: With proper design and insulation, aluminium frames can provide effective soundproofing as well.

In summary, uPVC is known for its affordability, low maintenance, and decent insulation properties. Aluminium offers enhanced strength, design flexibility, and better recyclability. The choice between uPVC and aluminium depends on factors such as budget, aesthetic preferences, insulation needs, and desired durability.