Aluminium vs PVC windows: which suits your project?
Both systems can be highly efficient—but they are not interchangeable. A practical comparison for homeowners and architects.
Quick overview: two strong materials
PVC windows dominate the German residential market because they are economical, low-maintenance, and thermally efficient. Multi-chamber profiles with triple glazing achieve strong Uw values and suit retrofits well.
Aluminium windows excel with slim sightlines, high strength, and architectural precision. They are ideal for large glazing, commercial buildings, and demanding façades.
Thermal performance and energy efficiency
Modern PVC systems with triple glazing and warm-edge spacers suit passive-house targets and funded retrofits. Focus on the overall window Uw value including frame and glass.
Aluminium needs thermally broken profiles to match those values. Its advantage is less the raw material than the ability to deliver large, stable units with controlled thermal bridges.
For retrofitted single-family homes, PVC is often the economical route. For architecture with large-format glazing, aluminium is hard to beat.
Design, maintenance, and lifespan
PVC offers foils and colours without regular painting. Frames are robust but should not be cleaned with harsh chemicals.
Aluminium finishes (powder coat, anodising) are weather-resistant and keep their look for years. Hardware and gaskets need periodic care—regardless of material.
Both systems last decades with professional installation. Profile, glazing, hardware, and—above all—installation quality matter most.
Cost and project context
PVC windows are usually cheaper upfront, especially for standard sizes and residential retrofits. Aluminium costs more but pays off on special formats, façade integration, and commercial work.
VisionBau's advice: define use, architecture, and energy goals first—then pick the system. Many projects combine PVC in living areas with aluminium at entrances or commercial zones.
FAQ
- Which is cheaper, aluminium or PVC?
- PVC is usually more economical for residential retrofits. Aluminium pays off for design, size, and commercial use.
- Can VisionBau supply both systems?
- Yes. VisionBau designs and installs PVC and aluminium windows across Germany.