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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