The Difference Between UPVC Windows and Aluminum Windows

Choosing a frame system for new windows should depend not only on your aesthetic preferences but also on the technical characteristics of the products. Glazing must be considered carefully, as UPVC windows, like aluminum windows, are installed for a long period and involve a significant cost.
There are many differences between UPVC and aluminum that should be considered before placing an order. When comparing the two types of windows, the price should ultimately be the focus.
For homeowners, this can be one of the difficult decisions to make. However, we aim to make this process easier for you by analyzing the main advantages and disadvantages of each type of window, so you can make an informed decision and determine what is best for you.
Structural Differences Between UPVC and Aluminum

UPVC Window Assembly

Aluminum Window Assembly
Advantages of UPVC Windows

People want warm, clean, and beautiful rooms. UPVC windows fully meet these requirements and are widely available.
Main Advantages:
- Excellent thermal and sound insulation. The plastic windows are tightly sealed, preventing cold air from entering. The UPVC profile with a double-glass unit provides an effective sound barrier.
- Polyvinyl chloride uPVC is non-combustible. Naturally, uPVC begins to melt before aluminum, but from a fire safety perspective, this material is perfectly acceptable.
- A wide variety of shapes, colors, and sizes are available.
When choosing PVC windows, you should consider not only their advantages but also their disadvantages. One drawback mentioned above is the impossibility of repairing a UPVC profile (meaning that if it is damaged, it must be completely replaced). Additionally, installing balcony glass on weak structural bases and then adding PVC windows can be dangerous due to the heavy weight of the window structures.
Advantages of Aluminum Windows

Available Aluminum Windows Available in two versions: warm and cold. In the warm version, a polymer material is used as an insulator, placed inside the profile chamber. Regardless of the presence or absence of this insulation, metal window systems offer the following advantages:
- Fire Resistance: Aluminum does not burn and melts at temperatures above 1112°C. This can be a decisive advantage for some buyers when choosing windows.
- Long Service Life: An average of 20 years.
- Ability to glaze large window openings, along with the possibility of repairing profile components.
The choice of glass for aluminum windows depends on the purpose of the room. If it is not heated, the second option is recommended to avoid unnecessary costs. However, warm profile systems are installed in residential apartments and buildings.
So, which windows should you prioritize: UPVC or aluminum?

When the height of the glass sash is important, choosing aluminum profiles is the clear choice. Aluminum windows are also commonly selected in cases that require large width and height.
When comparing window frames made of UPVC (polyvinyl chloride) and aluminum, it is important to understand that the thermal insulation properties of insulated aluminum frames are not as good as those of UPVC profiles. The same applies to sound insulation. Therefore, in harsh climates and noisy areas, it is preferable to install PVC windows only.
There is another slight but very important difference: it is produced uPVC Profiles in various but limited colors, which cannot be said for aluminum profiles that are available in a wide range of colors.