Buying guide
PVC or Aluminium? The complete comparison.
Two materials, two approaches. This guide helps you choose the right solution for your project, budget and style.
PVC often suits renovations where insulation and budget are priorities. Aluminium is particularly suitable for large openings, slim profiles and architectural projects. The right choice still depends on dimensions, glazing, the exact system, installation and required performance.
| Criterion | PVC | Aluminium |
|---|---|---|
| Thermal insulation | Highly efficient with the right profile and glazing | Highly efficient with a suitable thermal break |
| Durability | Durable when seals and hardware are maintained | Highly resistant; seals and hardware still require maintenance |
| Finishes & design | Wide range of colours and woodgrain finishes | Slim profiles, unlimited RAL colours, premium appearance |
| Maintenance | Very low — simple cleaning with water | Low — anodised surface, can be repainted if needed |
| Relative budget | Usually more accessible for a comparable configuration | Usually higher and strongly affected by dimensions |
| Best suited for | Renovation, residential buildings, best value for money | Contemporary architecture, large glazed areas, premium projects |
Verdict
Our recommendation
PVC is the most common choice in Switzerland for renovations thanks to its outstanding value for money. Aluminium is the go-to for architectural projects where design and slim profiles are a priority. In both cases, BO Fenster supports you with the best systems from Kömmerling, Aluprof and Aliplast.
Frequently asked questions
PVC or aluminium: quick answers
Does PVC insulate better than aluminium?
Material alone does not decide this. Compare Uw for the same dimensions and glazing, then check the frame, spacer and installation.
Which material suits a large glazed opening?
Aluminium is often selected for large sizes and slim profiles, but feasibility depends on the system, loads, glazing and opening type.
Is PVC always cheaper?
PVC is often more accessible for a comparable specification, but size, colour, glazing, accessories, access and installation can change the difference substantially.
How do you obtain a reliable comparison?
Request two configurations based on the same dimensions, glazing, opening, colour, accessories, installation conditions and included work.