Our catalogue has uPVC profiles from simple 3-chamber to 7-chamber systems: Winklaus, VEKA, Deceuninck, Pimapen, Winsa, Adopen and the locally made Evaks. Below, using their published specs, we explain what to look at: number of chambers, depth, profile class and wall thickness, gaskets and the glass unit. Price depends on the size and is calculated after a free on-site measurement.
| Feature | 3 chambers | 4–5 chambers | 6–7 chambers |
|---|---|---|---|
| Profile depth | 58–60 mm | 60–70 mm | 75–80 mm; VEKA SoftLine 82 platform |
| Glass | Single 4 mm or 20–24 mm unit; VEKA — 4-16-4 low-E | Single 4 mm or 20–34 mm unit (Winsa Dorado — up to 34 mm, Pimapen S70 — up to 33 mm) | 20–52 mm unit (Deceuninck Nirvana — 24–52 mm) |
| Gaskets | EPDM (Winklaus) or double-contour TPE (Evaks Gilavar) | Double-contour; triple-contour in Evaks Leysan | Triple-contour in Deceuninck Nirvana, EPDM in Winklaus 75 |
| Profile class and wall | Not stated in the catalogue | Class A, 2.8 mm wall (Pimapen S60 Alfa, S70 Maximus); class B, 2.5 mm (Pimapen S60 Beta); class B (Winsa Dorado) | Class A, 2.8 mm wall (Deceuninck Nirvana) |
| Insulation | Basic — for simple conditions and ancillary rooms | Good to high — the main class for flats | Maximum — for energy-efficient homes |
| Made in | Azerbaijan (Evaks Gilavar) | Turkey (Pimapen, Winsa, Adopen), Azerbaijan (Evaks Leysan) | Belgium (Deceuninck Nirvana) |
| Best for | Budget housing, rental flats, interior windows, balcony partitions, ancillary buildings | Flats and multi-storey buildings, offices, commercial buildings | Premium homes, villas, passive houses, projects with high energy-efficiency requirements |
| In the catalogue | Infinité 60, AVROpen 60, Aspen 58, Evaks Gilavar, VEKA | Winklaus 60, Winklaus 70, Pimapen S60 Alfa, Pimapen S60 Beta, Pimapen S70 Maximus, Winsa Dorado, Adopen 60, Evaks Leysan | Winklaus 75, Deceuninck Nirvana, VEKA SoftLine 82 |
Chambers and depth
Chambers are the air cavities inside the profile: the more of them and the deeper the profile, the better it keeps heat in and cuts noise, and the thicker the glass unit it can take. The catalogue ranges from 3-chamber profiles 58–60 mm deep (Aspen 58, Infinité 60, AVROpen 60, Evaks Gilavar) to the 7-chamber Winklaus 75 and the 6-chamber, 80 mm Deceuninck Nirvana with glass units up to 52 mm.
Profile class and wall thickness
The profile class reflects the thickness of its outer walls: in the catalogue, class A profiles (Pimapen S60 Alfa, S70 Maximus, Deceuninck Nirvana) have a 2.8 mm wall, while the class B Pimapen S60 Beta has 2.5 mm. A thicker wall means a stronger, stiffer structure, and class B is the best value for mass housing. Inside the profile is steel reinforcement, and around the perimeter EPDM or TPE gaskets in two or three contours.
The glass unit matters as much as the profile
Warmth and quiet come not only from the profile but also from the glass unit. Energy-saving low-E glass (VEKA, 4-16-4 unit) keeps heat in, a warm-edge spacer reduces heat loss (VEKA SoftLine 82), and the asymmetric unit with panes of different thickness (e.g. 4-12-6) in the VEKA soundproof window cuts noise by Rw 36–40 dB.
Local and imported profiles
Evaks profiles are made in Azerbaijan, lead-free, with quality control at the Sumgayit plant: the 3-chamber Gilavar (60 mm) and the 5-chamber Leysan (70 mm, triple-contour gaskets, 20, 24 and 30 mm glass units). From Turkey come Pimapen, Winsa and Adopen, from Belgium Deceuninck. We are not tied to one factory and pick the system for each project.
How to choose
Rental flat, ancillary room, interior window — 3 chambers are enough. A flat in a multi-storey building — a 5-chamber, 70 mm profile: Winklaus 70, Pimapen S70 Maximus, Winsa Dorado or Evaks Leysan. Noisy street — the VEKA soundproof window. House, villa, maximum energy efficiency — Winklaus 75, Deceuninck Nirvana or VEKA SoftLine 82. The differences within the Winklaus range are covered in a separate guide.