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Passivhaus · GEG 2024 · RE2020
⏱️ 8 min read • Energy & Physics

Passivhaus, GEG 2024 & RE2020 Energy Standards in Steel Frame Villas

How continuous thermal break technology, cavity rockwool insulation, airtight membranes ($n_{50} \≤ 0.6\^{-1}$), and triple-glazed Low-E windows achieve near-zero energy consumption and A+ European energy certificates.

U ≤ 0.14
External Wall Transmittance (W/m²K)
n50 ≤ 0.6
Blower Door Airtightness Rating (h⁻¹)
-60%
Annual Heating & Cooling Costs
Class A+
European Energy Performance Certificate
Core Analysis

Technical Deep-Dive & Strategic Findings

Detailed breakdowns, physical data, regulatory standards, and practical jobsite execution recommendations.

01

Complete Elimination of Thermal Bridging via External Insulation

Steel studs are fully enclosed by a continuous external insulation layer (50mm–100mm high-density rockwool or EPS), wrapping the steel frame in an unbroken thermal blanket and completely preventing condensation or heat loss.

02

Airtight Envelope Architecture & Blower Door Test Results

Using pro clima smart vapor-variable membranes and precision taped joints, our villas consistently achieve Blower Door test ratings of $n_{50} \≤ 0.6\^{-1}$, meeting the strict requirements of Germany's Passivhaus Institut and France's RE2020.

03

Integration with Heat Pumps & Heat Recovery Ventilation (HRV/VMC)

With pre-punched MEP service chaseways inside walls and floor cassettes, heat recovery ventilation (HRV) ducting and underfloor heat pump piping route through the framing without bulkheads or dropped ceilings.

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Frequently Asked Questions

Common Questions Regarding This Topic

Clear technical answers backed by European standards and practical manufacturing experience.

No. With dense rockwool insulation ($50\^3$), exterior wood-fiber/ETICS thermal breaks, and Low-E solar-control glass, our villas heat up in minutes during winter and maintain a stable, cool indoor climate with high thermal phase shift throughout hot Mediterranean summers.

Our multi-layer insulated wall assembly achieves U-values between 0.12 W/m²K and 0.14 W/m²K, combining cavity-fill rockwool with continuous external ETICS insulation, easily qualifying for Passivhaus and German KfW 40 standards.

Airtightness is achieved through continuous vapor-control membranes with taped overlapping joints, sealed service penetrations, and gasketed window interfaces, regularly scoring n50 ≤ 0.4 h⁻¹ in European Blower Door tests.

Start Your European Steel Villa Project with SerVilla

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