Choosing the right windows and doors is a decision that affects not only a building’s aesthetic, but also its energy efficiency and user comfort. More and more often, investors face a dilemma: PVC or aluminium windows? Both technologies have their advantages, and modern construction allows them to be combined in the same project. But is this solution practical and cost-effective?

Fintecnic, specializing in production of both PVC and aluminium windows, explains in which cases combining the two materials makes sense, what benefits it brings, and what to pay attention to when planning your project.

Differences between PVC and aluminium — advantages and limitations

Before deciding to combine these two technologies, it’s worth understanding their properties.
PVC windows are highly popular among private investors and developers. They are relatively inexpensive, offer excellent thermal and acoustic insulation, and require little maintenance. Fintecnic offers PVC profiles in modern designs, with a wide range of colors and finishes, allowing them to fit any building style—from classic to modern. Their main advantage is energy efficiency and affordable price, making them ideal for single family homes and residential buildings.

Aluminium windows, on the other hand, are the choice for those who value modern design, minimalism, and durability. Aluminium is lightweight yet very strong, allowing for very large glazing, slim profiles, and contemporary facades. Aluminium windows resist corrosion and UV, making them perfect for commercial buildings, offices, and modern homes with large windows.

Of course, each technology has its limitations. PVC performs less well under very heavy loads—so it’s not suitable for large-scale glazing. Aluminium, despite its durability, has lower insulating properties (though modern systems with thermal breaks have improved this greatly). Combining these materials allows you to balance out their disadvantages and take advantage of the strengths of each.

When does combining PVC and aluminium in one building make sense?

Combining PVC and aluminium in a single investment is a solution increasingly used by architects and developers. This approach makes sense both economically and functionally.
In practice, it is common to use PVC windows in living areas, where energy efficiency and thermal comfort are crucial, while aluminium windows are chosen for representative spaces, such as living rooms, kitchens with large glazing, conservatories, or terrace exits. Aluminium works better in areas exposed to intense sunlight, wind, or moisture.

This combination also makes sense in mixed-use residential and commercial buildings—for example, buildings with offices or retail units on the ground floor and apartments above. In commercial areas, modern-looking aluminium profiles are ideal, while in living areas, PVC windows with excellent sound insulation are preferred.

With this approach, investors can optimize costs—using more expensive aluminium only where its features are truly needed, and choosing more economical PVC elsewhere without losing on key technical parameters.

Practical aspects and challenges of combining the technologies

While combining PVC and aluminium in one project is possible, it requires proper planning and experience from both the manufacturer and the installer.

1. Aesthetic consistency

The main challenge is keeping a uniform look to the building. PVC and aluminium profiles differ in texture, sheen, and color shades. That’s why it’s worth choosing a manufacturer offering both technologies and a harmonized color palette. Fintecnic can provide PVC and aluminium windows in identical colors—e.g., anthracite matte, golden oak, or walnut—ensuring visual harmony across the facade.

2. Installation compatibility

PVC and aluminium have different coefficients of thermal expansion and different fixing methods. This means installation must take into account how the materials will behave and use suitable sealing and expansion techniques. Professional installation, such as that by Fintecnic, ensures both window types work together trouble-free for years.

3. Thermal performance and use

Aluminium windows, even with modern thermal breaks, have slightly different heat transfer figures than PVC. So when combining materials, balance between design and energy efficiency is key. In rooms where warmth is paramount—like bedrooms—PVC is better, while in living areas with big glass, aluminium is irreplaceable.

4. Service and durability

The benefit of choosing one manufacturer, like Fintecnic, is a single service system. Regardless of whether the building uses PVC, aluminium, or both, investors get complete technical support, warranty, and compatible maintenance solutions.

Recommendations for investors—how to smartly combine PVC and aluminium

1. Define the function of each room. Consider where maximum thermal insulation is needed, and where design and large glazing matter more. 
2. Set your budget. Combining both materials lets you optimize costs—you don’t have to use aluminium everywhere PVC will suffice. 
3. Ensure color and style consistency. By choosing a manufacturer that offers both technologies, you can guarantee a unified look to your facade. 
4. Rely on specialists’ experience. Fintecnic offers technical and design advice, helping investors adapt systems to their building’s needs and conditions. 
5. Think about the future. Choosing a reputable manufacturer guarantees access to spare parts, system compatibility, and reliable service for years to come. 

Summary

Combining PVC and aluminium in the same project is not only possible, but also a wise and increasingly popular solution. It lets you combine the best features of both materials: the durability and elegance of aluminium with the energy efficiency and affordability of PVC.
It’s important, however, that the decision is well thought-out and executed by an experienced manufacturer. Fintecnic offers end-to-end service—from technical advice and design, through production, to professional installation. This way, investors can be sure that all elements—regardless of technology—will work together perfectly.

Learn more about combining PVC and aluminium in your investment by consulting our technical advisors.