Certified structural layer stratigraphies, thermal transmittance (U-values down to 0.11 W/m²K), acoustic soundproofing (Rw up to 62 dB), and REI 60–120 fire ratings for European residential permitting.
Multi-layer thermal envelopes engineered to eliminate thermal bridging, push condensation dew points safely outside, and meet strict European climate codes.
The premier European standard for modern luxury villas with continuous exterior thermal break.
| Layer | Material Specification & Standard | Thickness | Lambda (λ) | Primary Physical Function |
|---|---|---|---|---|
| 1 | Silicone / Acrylic Hydrophobic Architectural Render | 3 mm | 0.70 W/mK | Weather barrier & UV aesthetic finish |
| 2 | Reinforcing Polymer Basecoat + Alkali-Resistant Fiberglass Mesh | 5 mm | 0.80 W/mK | Crack resistance & impact shielding |
| 3 | Continuous External Rockwool / Graphite EPS ETICS Insulation | 60–80 mm | 0.034 W/mK | Eliminates steel stud thermal bridges (Psi = 0.00 W/mK) |
| 4 | Moisture-Resistant Sheathing Board (BoardeX / OSB-3 Class) | 12.5 mm | 0.13 W/mK | Diaphragm racking shear resistance & wind load transfer |
| 5 | S350GD+Z275 Galvanized Steel C-Studs (140x45x1.2mm) @ 600mm c/c | 140 mm | 50.0 W/mK | Primary load-bearing structural frame (350 MPa yield) |
| 6 | Cavity Infill Hydrophobic Basalt Rockwool (Euroclass A1, 50 kg/m³) | 140 mm | 0.035 W/mK | Core thermal resistance & acoustic dampening |
| 7 | Smart Hygro-Variable Vapor Retarder & Airtightness Membrane | 0.5 mm | 0.20 W/mK | Prevents interstitial condensation in winter; lets frame breathe in summer |
| 8 | Internal High-Density Plasterboard / Drywall (Knauf Diamant) | 12.5 mm | 0.25 W/mK | Internal architectural finish, fire barrier & smooth paint substrate |
Premium architectural facade system with continuous convective chimney drainage and solar heat dissipation.
| Layer | Material Specification & Standard | Thickness | Lambda (λ) | Primary Physical Function |
|---|---|---|---|---|
| 1 | Architectural Cladding (Porcelain Tile / Thermo-Wood / Standing Seam Zinc / WPC) | 8–20 mm | 1.30 W/mK | Aesthetic exterior envelope & primary rain deflector |
| 2 | Continuous Ventilated Air Cavity & Aluminum / Timber Sub-Frame Battens | 30–40 mm | 0.00 | Thermal convection chimney effect, moisture purge & solar heat deflection |
| 3 | Breathable Water-Resistant & UV-Protected Membrane (Tyvek / Dupont) | 0.5 mm | 0.17 W/mK | Wind-driven rain defense while allowing inward water vapor out |
| 4 | External Thermal Insulation (50mm Rigid Mineral Wool with Black Fleece) | 50 mm | 0.034 W/mK | Exterior thermal break wrapping the entire steel frame |
| 5 | Engineered Sheathing Board (12.5mm BoardeX Glass-Mat Sheathing) | 12.5 mm | 0.13 W/mK | Rigid diaphragm shear resistance & Euroclass A1 fire skin |
| 6 | S350GD+Z275 Structural Steel Frame + 140mm Basalt Rockwool Core | 140 mm | 0.035 W/mK | Vertical load-bearing + primary acoustic and thermal barrier |
| 7 | Airtight Taped Vapor Barrier Membrane + Service Void Batten | 25 mm | 0.04 W/mK | Airtight envelope + protects vapor barrier during electrical socket routing |
| 8 | Double Layer 2x12.5mm Plasterboard (Acoustic + Fire-Rated) | 25 mm | 0.24 W/mK | Enhanced acoustic mass (Rw 56 dB) & REI 90 fire integrity |
Designed for Swiss Minergie-P, German KfW 40 Plus, and Scandinavian sub-zero climates with virtually zero heating demands.
| Layer | Material Specification & Standard | Thickness | Lambda (λ) | Primary Physical Function |
|---|---|---|---|---|
| 1 | Architectural Cladding or ETICS Fine Mineral Plaster | 5 mm | 0.75 W/mK | Protective external skin |
| 2 | Continuous 120mm Exterior High-Density Rockwool (120 kg/m³) | 120 mm | 0.034 W/mK | Massive external continuous thermal envelope |
| 3 | 15mm Structural OSB-3 / Fibercement Diaphragm Board | 15 mm | 0.13 W/mK | Diaphragm racking shear strength |
| 4 | 140mm S350GD+Z275 Steel Studs + 140mm A1 Mineral Wool Infill | 140 mm | 0.034 W/mK | Primary load bearing structure |
| 5 | ProClima Intello Plus Variable Smart Vapor Retarder (Fully Taped) | 0.5 mm | 0.17 W/mK | Hermetic airtight layer (n50 < 0.6 /h Passivhaus blower door cert) |
| 6 | 50mm Horizontal Internal Service Cavity + 50mm Acoustic Rockwool | 50 mm | 0.035 W/mK | Decouples service runs from airtight skin, adds internal thermal mass |
| 7 | Double 2x12.5mm Knauf Diamant Heavy Acoustic Drywall | 25 mm | 0.25 W/mK | Impact-resistant interior walls with supreme sound isolation (Rw 59 dB) |
Engineered internal wall stratigraphies: single-stud room partitions, resilient channel acoustic decoupled walls, and double-stud party walls between private suites or multi-unit dwellings.
Non-load-bearing or load-bearing room divider with rockwool acoustic core and pre-punched service holes.
| Layer | Material Specification & Standard | Thickness | Lambda (λ) | Primary Physical Function |
|---|---|---|---|---|
| 1 | 12.5mm Interior Gypsum Board (Ready for Paint) | 12.5 mm | 0.25 W/mK | Smooth paintable interior finish |
| 2 | 90mm S350GD+Z275 Steel C-Studs with Factory Service Holes | 90 mm | 50.0 W/mK | Rigid steel vertical skeleton + MEP chase |
| 3 | 60–90mm Basalt Acoustic Rockwool Infill (40 kg/m³) | 90 mm | 0.036 W/mK | Airborne sound dampening between rooms |
| 4 | 12.5mm Interior Gypsum Board (Moisture-Resistant in Wet Areas) | 12.5 mm | 0.25 W/mK | Reverse side interior skin |
Two independent steel frames with zero acoustic bridge connection, engineered for luxury master bedroom suites, home theaters, and duplex separation.
| Layer | Material Specification & Standard | Thickness | Lambda (λ) | Primary Physical Function |
|---|---|---|---|---|
| 1 | Double 2x12.5mm Knauf Soundshield Acoustic Drywall | 25 mm | 0.24 W/mK | Mass-spring acoustic mass layer |
| 2 | 90mm Independent S350GD Steel Stud Row A + 70mm Rockwool | 90 mm | 0.035 W/mK | Independent structural skeleton A |
| 3 | 20mm Decoupled Air Gap with Continuous Acoustic EPDM Foam Barrier | 20 mm | 0.00 | Breaks all mechanical airborne & flanking vibration transmissions |
| 4 | 90mm Independent S350GD Steel Stud Row B + 70mm Rockwool | 90 mm | 0.035 W/mK | Independent structural skeleton B |
| 5 | Double 2x12.5mm Knauf Soundshield Acoustic Drywall | 25 mm | 0.24 W/mK | Second mass-spring acoustic boundary |
Engineered cold-formed steel floor cassettes with high section modulus, EPDM acoustic decoupling, structural sub-decking, and screed options engineered to L/500 deflection limits.
Solid concrete-like rigidity and quiet acoustic performance eliminating footstep impact sound transmission.
| Layer | Material Specification & Standard | Thickness | Lambda (λ) | Primary Physical Function |
|---|---|---|---|---|
| 1 | Floor Finish: Luxury Engineered Hardwood / Porcelain Tile | 15 mm | 0.17 W/mK | Architectural interior surface |
| 2 | Knauf Brio 23mm Dry Screed / Fermacell Floor Panel + Underfloor Heating Pipes | 23 mm | 0.38 W/mK | High thermal conductivity for underfloor radiant heating + impact mass |
| 3 | High-Density Impact Sound Acoustic Underlay (EPDM / Rubber-Cork Mat) | 10 mm | 0.04 W/mK | Absorbs footstep impact vibrations (Ln,w <= 48 dB) |
| 4 | 22mm Tongue & Groove Structural Floor Deck (OSB-3 / Fibercement Board) | 22 mm | 0.13 W/mK | High diaphragm shear rigidity & subfloor load distribution |
| 5 | Continuous EPDM Acoustic Isolation Strip on All Joist Crowns | 5 mm | 0.15 W/mK | Prevents steel-to-wood micro-friction squeaks and structural sound flanking |
| 6 | 200–250mm S350GD+Z275 Engineered Floor C-Joists / Lattice Cassette @ 400mm c/c | 230 mm | 50.0 W/mK | Main structural floor spans (designed strictly to L/500 deflection limit) |
| 7 | 100mm Basalt Mineral Rockwool Acoustic Cavity Absorption | 100 mm | 0.035 W/mK | Eliminates floor cavity resonance drum effects |
| 8 | Acoustically Decoupled Resilient Ceiling Hangers & Steel Sub-Channels | 25 mm | 0.00 | Decouples lower ceiling drywall from joist flexure vibrations |
| 9 | 15mm Fire-Rated & High-Density Ceiling Gypsum Plasterboard (Knauf Fireboard) | 15 mm | 0.24 W/mK | Lower room ceiling aesthetic surface & REI 60–90 fire shield |
High-thermal-mass roof envelopes supporting standing seam metal, ceramic tiles, flat accessible terraces, and green roofs engineered for alpine snow loads and tropical heavy rainfalls.
Ultra-modern architectural standing seam roof with continuous cross-ventilation and zero condensation risk.
| Layer | Material Specification & Standard | Thickness | Lambda (λ) | Primary Physical Function |
|---|---|---|---|---|
| 1 | Architectural Standing Seam Zinc / Coated Aluminum Roof Panels (0.7mm) | 0.7 mm | 110.0 W/mK | 100% watertight non-combustible primary weather shield |
| 2 | Structured Drainage Separation Mat with Vapor Venting Coils (Delta-Trela) | 8 mm | 0.17 W/mK | Prevents underside panel oxidation & dampens heavy rain impact noise |
| 3 | 18mm Tongue & Groove Exterior Plywood / OSB-3 Roof Decking | 18 mm | 0.13 W/mK | Solid continuous fixing substrate for standing seam clips |
| 4 | Continuous Ventilated Counter-Batten Air Cavity (50x50mm) | 50 mm | 0.00 | Rapid snowmelt drainage & summer attic solar heat evacuation |
| 5 | Vapor-Permeable Monolithic Under-Roof Waterproof Membrane (Tyvek Supro) | 0.5 mm | 0.17 W/mK | Secondary weather protection against wind-blown powder snow |
| 6 | S350GD+Z275 Steel Roof Trusses / Rafters + 200mm Rockwool Core | 200 mm | 0.034 W/mK | Eurocode snow load capacity (up to 4.5 kN/m²) + core thermal envelope |
| 7 | 50mm Cross-Layer Thermal Insulation Batten with 50mm Additional Rockwool | 50 mm | 0.034 W/mK | Breaks any thermal bridge across rafter bottom chords (Total 250mm insulation) |
| 8 | Airtight Sealed Smart Vapor Barrier + 12.5mm Plasterboard Ceiling | 13 mm | 0.25 W/mK | Hermetic air boundary & finished ceiling surface |
Heavy-duty engineered flat roof cassette supporting pedestrian traffic, solar PV arrays, or extensive green roof vegetation.
| Layer | Material Specification & Standard | Thickness | Lambda (λ) | Primary Physical Function |
|---|---|---|---|---|
| 1 | Walkable Porcelain Pavers on Adjustable Pedestals or Extensive Sedum Green Roof | 30–80 mm | 1.30 W/mK | Usable architectural terrace living space & UV protection |
| 2 | Root-Resistant EPDM / TPO High-Elasticity Waterproof Membrane (1.52mm) | 1.5 mm | 0.25 W/mK | 50+ year zero-leak jointless monolithic waterproofing barrier |
| 3 | Continuous 140mm PIR / XPS Thermal Insulation with Integrated 2% Slope | 140 mm | 0.022 W/mK | Ultra-high thermal resistance (lambda 0.022) + positive drainage flow |
| 4 | Reinforced Bituminous Vapor Barrier & Temporary Worksite Seal | 4 mm | 0.17 W/mK | Absolute vapor block (sd > 1500m) preventing moisture entering roof pack |
| 5 | 18mm Structural OSB-3 / Fiber-Reinforced Calcium Silicate Substrate | 18 mm | 0.13 W/mK | Continuous structural diaphragm deck |
| 6 | 200–250mm S350GD+Z275 Steel Cassette Joists + 100mm Rockwool Core | 220 mm | 50.0 W/mK | Heavy dead load and live pedestrian load support (3.0 kN/m²) |
| 7 | Acoustic Suspended Ceiling + 15mm Fireboard Gypsum Plasterboard | 15 mm | 0.24 W/mK | Interior ceiling finish & REI 90 fire rating |
Engineered seismic anchor bolt connections, capillary moisture cutoff barriers, thermal threshold breaks, and foundation perimeter insulation preventing cold footing infiltration.
High-capacity Hilti chemical anchors, EPDM thermal footing gasket, and continuous perimeter insulation wrapping the concrete slab.
| Layer | Material Specification & Standard | Thickness | Lambda (λ) | Primary Physical Function |
|---|---|---|---|---|
| 1 | S350GD+Z275 Heavy Bottom U-Track Base Channel (1.5–2.0mm thickness) | 2.0 mm | 50.0 W/mK | Primary horizontal structural interface transferring wall loads to slab |
| 2 | Hilti HIT-HY 200 Heavy-Duty Chemical Epoxy Anchor Studs (M12 / M16) | Depth: 120-180mm | N/A | Resists seismic base shear, overturning moment, and hurricane wind uplift |
| 3 | Continuous EPDM Closed-Cell Acoustic Footing & Capillary Break Gasket | 6 mm | 0.04 W/mK | 100% blocks capillary water rising from concrete into steel framing; dampens structural vibration |
| 4 | Perimeter XPS Foundation Skirt Insulation (80–100mm Waterproof XPS) | 100 mm | 0.035 W/mK | Eliminates foundation perimeter frost line and thermal bridging at floor edge |
| 5 | Reinforced Concrete Raft Slab (Slab-on-Grade or Crawlspace Cap) | 200–250 mm | 2.0 W/mK | Substructure foundation prepared by local ground contractor according to SerVilla load schedule |
A comprehensive side-by-side engineering comparison of all SerVilla standard envelope, partition, mezzanine, and roof assemblies.
| Assembly Code | Assembly Description | Total Depth | U-Value | Sound (Rw) | Fire Rating | Dead Weight | European Standard |
|---|---|---|---|---|---|---|---|
| SFV-EW-01 | Exterior Wall (ETICS) | 265 mm | 0.15 W/m²K | 54 dB | REI 60 / 90 | 48 kg/m² | GEG 2024 / RE2020 / NTC 2018 |
| SFV-EW-02 | Exterior Wall (Ventilated Facade) | 295 mm | 0.14 W/m²K | 56 dB | REI 90 | 54 kg/m² | Eurocode 3 & 8 / Passivhaus ready |
| SFV-EW-03 | Exterior Wall (Passivhaus Ultra) | 345 mm | 0.11 W/m²K | 59 dB | REI 120 | 62 kg/m² | Passivhaus / Minergie-P / KfW 40 Plus |
| SFV-IW-01 | Interior Partition Wall | 115 mm | N/A | 46 dB | REI 45 / 60 | 28 kg/m² | EN 1993-1-3 / DIN 4109 |
| SFV-IW-02 | Acoustic Double-Stud Party Wall | 240 mm | N/A | 62 dB | REI 120 | 52 kg/m² | DIN 4109 (Schallschutz) / DPCM 5-12-97 |
| SFV-FL-01 | Acoustic Mezzanine Floor Joist | 380 mm | 0.22 W/m²K | 58 dB (L'n,w ≤ 48 dB) | REI 60 / 90 | 65 kg/m² | EN ISO 717-2 / L/500 Rigidity |
| SFV-RF-01 | Pitched Standing Seam Roof | 365 mm | 0.12 W/m²K | 52 dB | REI 90 | 42 kg/m² | EN 1991-1-3 (Snow up to 4.5 kN/m²) |
| SFV-RF-02 | Accessible Flat Terrace / Green Roof | 395 mm | 0.13 W/m²K | 55 dB | REI 90 | 68 kg/m² | EN 13501-5 (Broof t1) / RE2020 |
Download our complete, ready-to-import vector cross-section details for ArchiCAD, AutoCAD, and Revit, complete with layer hatching, thermal properties, and connection nodes.
How SerVilla assemblies comply with and surpass national building physics and statutory energy codes across the EU.
In-depth physics and structural answers regarding thermal breaks, acoustic mass, and permitting submissions.
Steel is an excellent heat conductor, which is why we never rely solely on in-stud insulation. Our wall assemblies wrap the entire external steel skeleton in a continuous, unbroken 60–120mm exterior thermal insulation layer (EIFS/ETICS or rigid external rockwool). This exterior envelope moves the thermal dew point safely outside the framing cavity and reduces the linear thermal transmittance factor (Psi) to zero (0.00 W/mK), fully certified to German GEG 2024 and Passivhaus criteria.
Unlike timber joists that creak and transmit vibration, SerVilla floor cassettes combine deep S350GD C-joists engineered to a strict L/500 deflection standard with continuous EPDM acoustic isolation strips, 22mm structural decking, high-density impact sound underlayments (L'n,w ≤ 48 dB), 100mm cavity rockwool, and resilient ceiling decoupling channels. This delivers concrete-floor acoustic tranquility (Rw ≥ 58 dB).
All internal insulation infill uses hydrophobic basalt rockwool classified as Euroclass A1 (completely non-combustible with melting points exceeding 1000°C). Combined with fire-resistant sheathing boards (BoardeX / Knauf Fireboard), our exterior walls deliver certified REI 60 to REI 120 fire resistance, and party walls achieve REI 120, preventing fire and smoke spread strictly according to EN 13501-2 standards.
Yes. Our structural sheathing substrate (BoardeX / OSB-3) supports all European facade types: direct ETICS rendered finishes, clinker brick slips, natural stone veneer, ventilated timber (larch, cedar, thermowood), standing seam zinc, and aluminum composite panels (Trespa, Alucobond). Internally, standard plasterboards are ready for paint, wallpaper, ceramic tiling, or microcement.
You can request our complete Architectural & Engineering Cross-Section Dossier (.PDF and .DWG) by submitting your project details via our Request a Quote form or by directly contacting our engineering desk. We provide ready-to-import CAD details and customized U-value thermal verification calculations for your local municipal permit application.
High-yield S350GD structural steel with 275 g/m² hot-dip zinc coating. CNC roll-formed to sub-millimeter tolerances with 50+ year anti-corrosion protection.
Explore TopicEliminate thermal bridges with continuous external insulation (U-values: 0.12–0.16 W/m²K). Comply with Germany's GEG 2024, France's RE2020, and Swiss Minergie standards.
Explore TopicLightweight structural physics meets high ductility. Superior seismic behavior factor (q ≥ 3.0), zero brittle masonry collapse risk, and certified safety for high seismic zones (PGA ≥ 0.40g).
Explore TopicTotal acoustic tranquility (Rw ≥ 56 dB) through mass-spring-mass physics. Certified A1 non-combustible rockwool cores providing REI 60, 90, and 120 fire resistance ratings.
Explore TopicSubmit your architectural floor plans for a complimentary Eurocode structural feasibility check, custom U-value analysis, and itemized factory price quotation.