REHAU — German engineering with RAU-FIPRO fiberglass reinforcement. Kömmerling — 125 years of lead-free, eco-friendly profiles. Both deliver Passive-House thermal performance.
Kömmerling PVC — maximum insulation and savings on heating. Cortizo aluminium — ultra-slim frames for panoramic views and modern architecture. Pick the material that suits your project.
Cortizo — Spanish aluminium leader, perfect for panoramic glazing. VEKA — German PVC with signature Softline design and Class A walls. Different materials, both top-tier.
VEKA — proven PVC craftsmanship since 1969 with reinforced wind protection. Schüco — architects’ choice with smart-home automation and RC3 security. Compare and choose.
Schüco — German premium with cutting-edge technology and facade systems. WDS — European quality at economy-segment prices, 6-chamber profiles by default. Which fits your budget?
The sealed unit inside a profile does most of the work — keeping a home warm, quiet, and bright. Here are the three technologies that show up most often in the catalogue, and what each is actually for.
Profiles, glass, and fittings are only part of the story. When you compare quotes from different installers, this is the checklist that tells you whether you're getting the same thing.
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FAQs
Residential windows are usually made from PVC, aluminium, or wood-aluminium. PVC is the most affordable with excellent thermal insulation. Aluminium is strong and slim — ideal for large openings and panoramic glazing. Wood-aluminium combines natural wood inside with weather-resistant aluminium cladding outside, at a premium price.
The choice depends on your priorities: PVC for the best price-to-insulation ratio, aluminium for modern design and large structures, wood-aluminium for premium aesthetics. Climate, building floor, noise level outside, and budget all play a role — the brand and profile pages on this site list the strengths of each option.
A glass unit is the sealed structure of two or three panes of glass with a spacer between them, filled with dry air or argon. It does most of the work keeping a home warm and quiet — the profile is just the frame. Modern units can have energy-saving, solar-control, or acoustic coatings depending on what you need.
Clean glass and frames a few times a year with mild detergent — no abrasives on PVC or coated aluminium. Lubricate hinges and locking points once a year with light machine oil, and check the gaskets for cracks. Two preventive inspections a year keep fittings smooth and seals airtight for a decade or more.
Aluminium is strong, corrosion-resistant, and lets manufacturers build very slim frames with large glazed area. It is the natural choice for panoramic openings, sliding systems, and modern architecture. For thermal performance, look specifically for "thermal break" or RPT aluminium — plain aluminium loses heat far too easily.
Wood-aluminium windows combine the warmth and grain of natural wood inside with weather-proof aluminium cladding outside. They never need painting, they last decades, and they bring a residential, tactile feel that pure PVC or pure aluminium cannot match. The catch is the price — typically 2–3× a PVC equivalent.
Put every window profile from our catalogue side by side — sort by U-value, depth, brand or material to find the one that fits your project.
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