Sound Insulation in Doors and Windows
Standard: EN ISO 717-1:1999
Standard Information
- Standard Number: EN ISO 717-1:1999
- Title: Acoustics - Rating of sound insulation in buildings and of building elements
- Part 1: Airborne sound insulation
- Status: Current
Sound Insulation Ratings
The standard defines several acoustic performance indicators:
Main Indicators
- Rw (C; Ctr): Weighted sound reduction index with spectrum adaptation terms
- Rw: Weighted sound reduction index
- C: Spectrum adaptation term for pink noise
- Ctr: Spectrum adaptation term for urban traffic noise
Performance Classes
Typical sound insulation classes for doors:
- Basic (Rw 32-35 dB): Standard residential doors
- Enhanced (Rw 37-40 dB): Office and meeting room doors
- High (Rw 42-45 dB): Music room, cinema doors
- Premium (Rw 47-50 dB): Recording studio, theater doors
- Maximum (Rw > 50 dB): Specialized acoustic doors
Measurement Methods
Sound insulation testing includes:
- Laboratory measurements
- Field measurements
- Frequency range testing (100-3150 Hz)
- Reference curve comparison
- Spectrum adaptation calculations
Factors Affecting Performance
- Door mass and density
- Seal quality and type
- Frame design and installation
- Glazing specifications
- Gap treatments
- Installation quality
Application Guidelines
Recommended Applications
- Residential: Rw 32-35 dB
- Office Buildings: Rw 35-40 dB
- Hotels: Rw 40-45 dB
- Recording Studios: Rw 45-50 dB
- Industrial: Rw > 50 dB
Installation Requirements
Critical installation factors include:
- Proper seal installation
- Frame anchoring
- Gap filling
- Threshold treatment
- Hardware adjustment
Important Considerations:
- Select appropriate acoustic rating for the application
- Consider both Rw and spectrum adaptation terms
- Ensure proper installation to maintain performance
- Regular maintenance of seals and hardware
- Verify certification and test reports