The question of whether to choose PVC or aluminum windows comes up frequently in discussions with our U.S. partners. And for good reason — both materials have their unique advantages and limitations. Choosing between them isn’t just a matter of budget or personal taste. It’s a strategic decision that should be based on project requirements, energy performance expectations, aesthetics, long-term durability, and of course, cost-effectiveness.
So, PVC or aluminum? Let’s break it down — clearly, practically, and with 55+ years of industry expertise behind our insights.
Aluminum – modern aesthetics, strength & large-scale glazing
Aluminum windows are synonymous with sleek, slim profiles, minimalism, and exceptional structural stability. This makes them the go-to solution for contemporary architecture – commercial buildings, high-end residential towers, and large-scale glazing projects.
In the U.S. market, aluminum has a strong presence, especially in warmer climates where thermal insulation isn’t always a top concern. Floor-to-ceiling windows, curtain wall designs, and open-concept spaces all benefit from the strength and dimensional stability of aluminum systems. These windows are built to withstand heavy use and deliver clean, sharp lines for architects focused on modern expression.
PVC – superior thermal efficiency, comfort & affordability
In European markets, and increasingly in U.S. residential construction, PVC windows are gaining ground thanks to their outstanding energy efficiency and excellent price-to-performance ratio.
PVC systems offer up to 25% better thermal insulation than non-thermally broken aluminum, even without additional inserts. They’re ideal for cold or mixed climates, airtight construction, and energy-conscious designs like Passive House or Energy Star–certified homes. With a wide selection of colors, textures, and woodgrain finishes, modern PVC systems deliver both performance and visual flexibility.
PVC vs. aluminum – technical comparison
| Feature | PVC Windows | Aluminum Windows |
|---|---|---|
| Initial Cost | Lower – excellent value for energy performance | Higher – especially in thermally broken or oversized applications |
| Thermal Insulation (Uw) | Excellent – 0.72 to 1.3 W/m²K depending on system and glazing | Moderate without thermal break; excellent with thermal break (< 0.9 W/m²K) |
| Sound Insulation (Rw) | Up to 45 dB with proper glazing configuration | Comparable – depending on glazing and system |
| Service Life | 20–30 years – requires steel reinforcement for large units | 40–50 years – high rigidity, no need for reinforcement |
| Weather Resistance | Good – resistant to UV and moisture with proper additives | Excellent – corrosion-resistant, highly durable finishes (anodized or powder-coated) |
| Design & Aesthetics | Broad color and finish range (incl. wood-look foils, satin, acrylcolor) | Premium modern appeal – powder coating, anodizing, or wood-effect finishes |
| Large Glazing Capability | Limited – lower structural stiffness | Excellent – high load capacity and dimensional stability |
| Frame Depth | 70–90 mm typical (multi-chamber profiles) | 65–95 mm or more – depending on the system and usage |
| Maintenance | Minimal – no painting, occasional cleaning and hardware check | Minimal – no surface maintenance required |
| Recyclability | Recyclable with selective processing | Highly recyclable – aluminum retains full material value |
PCV vs aluminium. Which material for which application?
Residential Projects – single-family homes and multi-unit housing
PVC is the top choice for most residential builds. It offers airtight construction, superior thermal insulation, and modern aesthetics at an accessible price point. With advanced surface options, PVC profiles can closely mimic the look of wood or even aluminum.
Recommended Bertrand PVC systems:
BB Line 82 – Six-chamber design, 81 mm depth, glazing up to 54.8 mm. Excellent energy performance in a modern frame.
BB Line 84 – Central gasket system with enhanced rigidity and insulation. Ideal for energy-efficient housing.
KOMBISYSTEM – 83 mm system with excellent thermal insulation and a robust structure. Ideal for demanding residential and commercial applications.
Commercial buildings – offices, retail, high-rise residential
Aluminum is often the best fit for high-traffic applications and large-format designs. It ensures long-term durability, supports expansive glass panels, and aligns with modern architectural trends.
However, hybrid systems that combine the energy efficiency of PVC with the exterior look of aluminum are also gaining traction. They’re especially useful when projects demand both insulation and premium aesthetics.
Recommended Bertrand hybrid systems:
KONTUR with aluminum cladding – PVC interior for insulation; aluminum exterior for design.
KOMBISYSTEM ALU – 83 mm deep profiles, excellent thermal performance, and commercial-grade durability.
PVC vs aluminium. Why not both?
More and more developers are combining systems to optimize performance and cost. For example: use PVC windows in bedrooms and kitchens, and install large aluminum or hybrid sliding doors in the living area. This strategic mix gives you the best of both worlds — energy savings without compromising architectural design.
PVC and aluminum aren’t rivals — they’re complementary solutions. It all depends on your project’s priorities.
- Want comfort and efficiency at a competitive price? Go PVC.
- Looking for minimal design and structural strength? Choose aluminum.
- Need both? Hybrid PVC-aluminum is the smart answer.
Need technical guidance for your next project or showroom?
Reach out to us directly. Our team is ready to help you choose the ideal window system based on your market, climate zone, and project requirements.