RE2020 Energy Standards & Steel Frame | Passive Steel Homes
France’s new-building regulation addresses energy, life-cycle carbon and summer comfort. Applicable requirements depend on project scope and timing.
RE2020 in Steel Frame Construction
Key Questions for Project Evaluation
Who supplies environmental product data for steel, foundation and other materials? Who coordinates the complete building assessment?
Applicable Countries & Adoption for RE2020
European countries where this standard serves as a statutory code, subsidy benchmark, or accredited green label:
Performance Benchmarks & Criteria for RE2020
New-building regulation| Performance Parameter | Benchmark Target | Steel Envelope Methodology |
|---|---|---|
| Bioclimatic Need (Bbio) | Bbio ≤ Bbio_max (-%30 vs RT2012) | South-facing solar optimization + compact envelope geometry |
| Primary Energy (Cep / Cep,nr) | Cep ≤ Cep_max (kWh/m²a) | Fossil-free building services; inverter air-to-water heat pump |
| Embodied Carbon (Ic_construction) | ≤ Decreasing French Regulatory Threshold | CFS weight reduction slashes foundation concrete volume & water |
| Summer Overheating Degree-Hours (DH) | DH ≤ 350 – 1250 Derece-Saat | Integrated external blinds & high-density rockwool phase shift |
| Air Permeability (Q4Pa-surf) | ≤ 0.60 m³/(h·m²) | Aero-tight membranes & factory-tested penetrations |
Delivery Packages Compatibility for RE2020
Required procurement scope and on-site interfaces to secure compliance with this standard:
P1 Structural Frame
Supplies precision CFS steel frame and certified Eurocode statics dossier. Thermal insulation, airtight membranes, and high-performance fenestration must be procured and executed by your local site contractor.
P2 Frame + Cavity Insulation
Includes structural steel studs, cavity rockwool infill and exterior structural sheathing. Meeting the stringent benchmark U-values of this standard requires additional continuous exterior rockwool wrap on site.
P3 Weather-Tight Envelope
The SWEET SPOT for Passive House & statutory low-energy standards. Features continuous exterior insulation wrap (U <= 0.11-0.14 W/m²K), certified triple-glazed fenestration, and airtight junction details securing n50 <= 0.60 h⁻¹.
P4 Complete Turnkey Kit
Includes full P3 thermal envelope plus certified 85%+ MVHR ventilation unit, heat pump readiness, interior drywall lining assemblies, and sanitary/electrical rough-in components for 100% turnkey compliance.
France Eco-PTZ Zero-Interest Loan & Property Tax Exemptions
Projects exceeding RE2020 energy and LCA carbon benchmarks can secure interest-free Eco-PTZ funding and up to 5-year local property tax (Taxe Foncière) exemptions in participating French communes.
Certification & Verification Roadmap for RE2020
PHPP or statutory calculation prepared with plot coordinates, solar azimuth, and local weather files.
Target U-values specified with exterior rockwool thickness and triple-glazed warm-edge fenestration.
ISO 9972 pressure test and IR thermography physically verify airtightness threshold n50 <= 0.60 h⁻¹.
Third-party certified audit dossier submitted for official energy efficiency and green mortgage registration.
Why Cold-Formed Steel for RE2020?
Steel frame does not shrink, twist or warp, ensuring airtight seals and tape junctions remain permanently intact.
Windows and panel interfaces are roll-formed to 0.5 mm tolerance, preventing unplanned thermal leaks on site.
Galvanized steel is impervious to rot, mold, fungi and termites, securing building biology credentials.
Building Physics & Technologies for Standard Compliance
Explore Other Model Concepts
Compare alternative footprints, storey options and spatial arrangements.
Model 25-1003 • 99 m²
Model 25-1003 — 99 m², 1 storey
Model 25-1004 • 114 m²
Model 25-1004 — 114 m², 1 storey
Model 25-1005 • 135 m²
Model 25-1005 — 135 m², 1 storey
Frequently Asked Questions
Essential answers regarding steel construction, energy targets and project delivery.
Yes. With exterior continuous insulation eliminating thermal bridging, certified triple-glazed windows, airtight membranes, and heat recovery ventilation (MVHR), steel homes achieve full Passive House standards.
Thermal bridging is prevented by external continuous insulation wrap, thermal-break tape on structural connections, and decoupling outer claddings from interior framing.
Passive House requires n50 <= 0.6 h-1 on Blower Door testing. Our envelope design incorporates continuous vapor control membranes taped at all seams.
Minergie is a Swiss quality label focusing on energy efficiency and indoor comfort with specific primary energy criteria, while Passivhaus has strict heating demand caps (15 kWh/m²a).
Official building certifications are issued by accredited third-party certifiers (e.g. Passive House Institute, Minergie Agency, DGNB) upon submission of calculations and test results.
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