What Affects the Price of Windows and Doors?
The 8 factors that determine the price of uPVC and aluminium windows, how to compare two quotes fairly and what may not be included.
Choosing products
uPVC or Aluminium Windows? How to Choose the Right One
Side-by-side comparison
| Criteria | uPVC | Thermally broken aluminium |
|---|---|---|
| Thermal insulation | Very good; value per DoP | Very good with thermal break; value per DoP |
| Profile | Thicker | Slimmer, more glass |
| Large openings | Possible with lift & slide systems | Ideal for panoramic and large sliding doors |
| Colours | White, woodgrain, black, anthracite | Wide RAL range and wood finishes |
| Maintenance | Minimal | Minimal |
| Cost | Usually more economical | Usually higher |
When to choose uPVC
uPVC is the usual choice for apartments and houses: good insulation, simple maintenance and a reasonable price. It also suits renovations aimed at better comfort and insulation.
When to choose aluminium
Aluminium is chosen for large openings, sliding or folding doors, or a minimalist look with slim profiles. It is also common in businesses, hotels and facades.
What matters more than the material
Two windows of the same material can perform very differently. Check:
- The profile system and number of air chambers;
- The glass: double or triple, Low-E, argon;
- Installation: perimeter insulation and sealing determine real-world results;
- The manufacturer’s DoP with certified values.
Common mistakes when choosing
- Choosing by price alone, without comparing the profile system and glass.
- Comparing values from brochures instead of the Declaration of Performance (DoP).
- Ignoring installation: a good window badly installed loses performance.
- Plain aluminium for heated rooms: it is meant for fixed panels and partitions, not ordinary windows.
Frequently asked questions
Which is more durable: uPVC or aluminium?
Both are long-lasting when they come from a certified system and are installed correctly. Our warranty is 5 years on the product and 24 months on installation.
Which insulates better?
There is no single answer: insulation depends on the system, the glass and the installation. Compare the Uw value in each system’s Declaration of Performance.
Can I combine PVC and aluminium in the same building?
Yes. PVC is often used for rooms and aluminium for large openings or sliding doors; each position is specified separately.
Does the warranty differ by material?
Our warranty is 5 years on the product (per the manufacturer’s certification) and 24 months on installation.
