Double-Skin Facade Technical Downloads
Complete technical documentation for Hanart double-skin facade systems — cavity detail drawings, ventilation analysis, energy modeling parameters, and BMS integration guidance for sustainable high-performance buildings.
Double-Skin Facade System
Hanart double-skin facades offer a multi-layer building enclosure with a ventilated cavity between the inner and outer skins. This system delivers outstanding acoustic insulation, natural ventilation, solar control, and energy efficiency for premium commercial buildings.
Energy-Efficient Cavity
The ventilated cavity acts as a climate buffer — in winter it retains heat, in summer it exhausts hot air through natural stack effect, reducing HVAC loads by 20–40% depending on climate.
Natural Ventilation
Operable vents at the bottom of the inner skin and top of the outer skin enable natural cross-ventilation, improving indoor air quality and occupant comfort without mechanical cooling.
Acoustic Protection
The two-skin configuration with wide cavity (typically 300–800mm) provides superior acoustic isolation, achieving 10–15 dB additional reduction compared to single-skin systems for urban environments.
Download Library
| Document | Format | Size | Description | Download |
|---|---|---|---|---|
| System Specification — Double-Skin Facade | 3.1 MB | Complete system specification: inner/outer skin requirements, cavity dimensions, ventilation strategies, and fire compartmentation. 50 pages. | Request Download | |
| Cavity Detail Drawings — Complete Set | DWG / PDF | 7.8 MB | Typical cavity details: ventilation openings, walkway gratings, louver integration, sun shading, fire barriers, and cleaning systems. AutoCAD 2018 compatible. | Request Download |
| Revit Family — Double-Skin Module | RFA | 3.6 MB | Parametric double-skin module family: inner skin, outer skin, cavity width, louver blind position, and ventilation openings. Revit 2020–2026 compatible. | Request Download |
| Natural Ventilation Analysis Report | 4.2 MB | CFD-based natural ventilation analysis methodology: buoyancy-driven stack effect calculations, wind-driven ventilation, air change rates, and indoor comfort verification. | Request Download | |
| Energy Modeling Parameters | XLSX / PDF | 1.2 MB | EnergyPlus and IES-compatible parameter sets: cavity transmittance, ventilation schedules, blind control logic, and shading coefficients for energy modeling. | Request Download |
| Sun Shading & Blind Integration Details | DWG / PDF | 3.4 MB | Motorized blind integration details, light shelf configurations, and louver systems with control strategies for solar gain management. | Request Download |
| Fire Compartmentation Guide | 2.7 MB | Fire safety engineering for double-skin facades: fire barriers, smoke extraction, cavity compartmentation per NFPA 285, EN 1363-1, and GB 51245. | Request Download | |
| BMS Integration Guide | 1.9 MB | Building management system integration: ventilation damper control, blind automation, temperature sensors, and fault diagnostics for the facade system. | Request Download | |
| Cleaning & Maintenance Manual | 2.3 MB | Cavity cleaning systems, access strategies, maintenance schedules, and lifecycle cost considerations for double-skin facades. | Request Download |
Standard Performance Characteristics
Third-party tested performance data for Hanart double-skin facade systems (representative configurations).
| Performance Parameter | Test Standard | Result | Rating |
|---|---|---|---|
| Thermal Transmittance (Facade Assembly) | NFRC 100 / ISO 10211 | U-value 0.9–1.1 W/m²K (cavity closed, winter) | High Performance |
| Solar Heat Gain (SHGC) | NFRC 200 | 0.15–0.35 with integrated shading | Excellent Solar Control |
| Natural Ventilation Rate | CFD analysis per ISO 7730 | 4–12 air changes per hour (stack effect) | Verified |
| Acoustic Insulation | ASTM E90 / ISO 140-3 | STC 45–52 (cavity configuration dependent) | High |
| Air Infiltration (Outer Skin) | ASTM E283 | 0.06 cfm/ft² @ 6.24 psf | Class AW |
| Water Penetration (Outer Skin) | ASTM E331 | Zero penetration @ 15 psf (720 Pa) | Pass |
| Fire Compartmentation | NFPA 285 / GB 51245 | Passed per facade height configurations | Verified |
Frequently Asked Questions
Is a double-skin facade worth the additional cost?
Double-skin facades cost 20–40% more than single-skin systems, but deliver measurable returns: 20–40% HVAC energy savings, natural ventilation capability, superior acoustics (10–15 dB improvement), and premium building image. They are most cost-effective in mixed climates, high noise environments, and prestige commercial projects where green certification adds value.
Can double-skin facades integrate with existing building management systems?
Yes. Hanart double-skin facades are designed with open BMS protocols (BACnet, Modbus, KNX). Ventilation dampers, blinds, and sensors integrate directly with your building automation system. We provide complete I/O mapping and control logic documentation.
What is the typical cavity width?
Standard cavity widths range from 300mm to 800mm. Wider cavities (600–800mm) allow walkable maintenance access and larger blind systems. The optimal width is determined by ventilation analysis, cleaning access requirements, and the chosen glazing configuration.
How is fire safety handled in double-skin facades?
Fire safety is managed through: (1) fire barriers at every floor level in the cavity, (2) compartmentation of the cavity per local regulations, (3) smoke extraction systems, and (4) inner skin fire-rated glazing where required. Every project is submitted to a fire engineering assessment per NFPA 285, EN 1363-1 or GB 51245 depending on jurisdiction.
Do you provide CFD ventilation analysis with the engineering package?
Yes — every double-skin facade project includes CFD analysis of the cavity: stack effect verification, wind pressure distribution, air change rates, summer overheating assessment, and comfort verification per ISO 7730. This analysis is included in our engineering package delivered before fabrication.
Need Project-Specific Technical Support?
Our engineering team provides cavity ventilation CFD analysis, energy modeling, and project-specific double-skin facade design. Contact us for design assistance or technical consultation.