Complete nZEB Systems Guide 2026 — Energy Efficient Windows for Nearly Zero Energy Buildings

PVC joinery is the most popular solution for windows and doors in Romania. Made from German-quality Salamander multichamber PVC profile, it offers excellent thermal insulation, over 40 years of durability and an unbeatable quality-price ratio. This complete guide gives you everything you need to make the right choice.

What is Salamander PVC Joinery?

Salamander Industrie-Produkte GmbH is a German manufacturer with over 40 years of experience producing PVC profiles for windows and doors. Salamander profiles are used by window manufacturers across Europe, including Neofort BIZ in Bucharest. Salamander systems use Class A PVC, lead-free, with a guaranteed durability of at least 40 years and certified UV colour resistance.

Salamander Profile Systems Available at Neofort BIZ

Insulating Glass — The Choice That Matters Most

Glass represents 70-80% of the window surface and has the greatest impact on thermal insulation. Neofort BIZ works exclusively with Saint-Gobain SGG glass. Double Low-E glass (2 panes) is the standard solution for renovations with a Ug of 1.0-1.1 W/m2K. Triple Low-E glass with argon (3 panes) is mandatory for nZEB certification, achieving Ug values of 0.5-0.6 W/m2K.

Professional Installation — The Difference Between Good and Excellent

The best PVC joinery incorrectly installed loses 30-50% of its thermal performance. Neofort BIZ applies the RAL standard for window installation: pre-compressed butyl tape on the exterior, vapour barrier film on the interior and PU foam between frame and wall. For nZEB projects, installation includes Blaugelb Triotherm+ sub-sill frames that eliminate thermal bridging.

PVC Windows and nZEB Certification — What You Need to Know

The nZEB regulation in Romania requires a maximum overall heat transfer coefficient (Uw) of 1.1 W/m2K for new buildings. For Uw values below 1.0 W/m2K — required for passive houses — BluEvolution 92 with triple Low-E Saint-Gobain glass and Blaugelb installation is recommended. Neofort BIZ provides complete nZEB consultancy.

Frequently Asked Questions — PVC Windows

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