The profile alone does not make an nZEB window — the complete system does: Salamander BluEvolution 92, Blaugelb Triotherm+ pre-frames and triple Low-E argon glazing. Complete technical guide with real values for 2026.
Why a single component is not enough for nZEB
The most common myth in Romania's joinery market: "if I get a Salamander BluEvolution 92 profile, I have an nZEB window." Wrong. The profile is just one of three components of the complete system. Without Blaugelb Triotherm+ pre-frames and triple Low-E argon glazing, even the best profile on the market cannot reach the thermal performance required by nZEB standards.
Component 1: Salamander BluEvolution 92 Profile
Salamander BluEvolution 92 is the reference profile for residential PVC joinery in 2026. The 92 mm profile depth allows installing a glazing unit up to 52 mm thick — precisely the triple glazing with argon and Low-E.
Main technical characteristics:
- 6 thermal insulation chambers
- Profile depth: 92 mm
- Frame thermal coefficient (Uf): 0.87 W/m²K
- Compatible with glazing units up to 52 mm
- Galvanised steel reinforcement included as standard
Component 2: Blaugelb Triotherm+ Pre-frames
A window installed without pre-frames loses between 30 and 40% of the profile's certified thermal performance due to thermal bridges at the wall junction.
How Blaugelb Triotherm+ eliminates thermal bridges:
- Material with extremely low thermal conductivity (λ = 0.035 W/mK)
- Physically separates the window frame from the wall structure
- Allows window installation in the plane of the wall's thermal insulation
- Eliminates condensation at corners and window edges
The complete Blaugelb system includes: Triotherm+ pre-frame, exterior pre-compressed butyl tape, and interior vapour barrier tape. Without this system, nZEB building certification cannot be obtained.
Component 3: Triple Low-E Argon Glazing
Triple Low-E argon glazing achieves Ug values of 0.5-0.7 W/m²K versus 1.0-1.1 W/m²K for standard double argon glazing — representing 70-80% of the window surface area.
Example Uw calculation for a 1200×1200 mm window:
| Component | Value |
|---|---|
| Uf Salamander 92 profile | 0.87 W/m²K |
| Ug triple Low-E argon glazing | 0.55 W/m²K |
| Ψg warm-edge spacer | 0.04 W/mK |
| Uw finished window | ~0.80 W/m²K |
nZEB threshold for Bucharest: Uw ≤ 1.3 W/m²K. The complete system achieves 0.80 W/m²K — 38% below the threshold.
Conclusion
Salamander BluEvolution 92 + Blaugelb Triotherm+ pre-frames + triple Low-E argon glazing: the combination that achieves Uw of 0.80 W/m²K, eliminates condensation and provides complete nZEB documentation.
Request a quote for the complete nZEB system — the Neofort BIZ team configures the right solution for your project, with thermal calculation and complete documentation included.
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