Air Permeability in Windows and Doors
Standard: EN 12207:2001
Standard Information
- Standard Number: EN 12207:2001
- Title: Windows and doors - Air permeability - Classification
- Status: Current
- Application: Windows and doors in buildings
Classification System
Air Permeability Classes
The standard defines four classes based on tested air permeability:
- Class 0: No performance determined
- Class 1: 50 Pa (12.50 m³/h.m²)
- Class 2: 100 Pa (6.75 m³/h.m²)
- Class 3: 300 Pa (2.25 m³/h.m²)
- Class 4: 600 Pa (0.75 m³/h.m²)
Reference Values
Air permeability is measured in:
- m³/h per m² (relative to overall area)
- m³/h per m (relative to joint length)
Testing Methods
Testing procedures include:
- Positive pressure testing
- Negative pressure testing
- Air flow measurement
- Pressure differential testing
- Temperature and humidity monitoring
Application Guidelines
Recommended Classes by Building Type
- Class 1: Basic buildings, storage facilities
- Class 2: Standard residential buildings
- Class 3: Commercial buildings, high-end residential
- Class 4: Passive houses, high-performance buildings
Performance Factors
Key factors affecting air permeability:
- Frame design and material
- Sealing system quality
- Hardware functionality
- Installation precision
- Maintenance condition
Benefits of Good Air Permeability
- Improved energy efficiency
- Better acoustic performance
- Enhanced thermal comfort
- Reduced condensation risk
- Lower heating/cooling costs
Installation Requirements
- Proper frame alignment
- Correct sealing application
- Appropriate fixing methods
- Quality control checks
- Professional installation
Important Considerations:
- Select appropriate class for building type
- Consider local climate conditions
- Verify test certificates
- Ensure proper installation
- Maintain regular inspection schedule