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Sound Insulation Test Certificate
A Sound Insulation Test Certificate records the measured sound insulation performance of walls and floors between dwellings. Required under Building Regulations Part E for new builds and conversions, the test is carried out by an accredited tester.
Building Regulations Approved Document E, BS EN ISO 16283Valid: One-off (at completion)
What it covers
- Airborne sound insulation test results (DnT,w)
- Impact sound insulation test results (L'nT,w)
- Test method and equipment calibration
- Pass/fail against Part E requirements
- Separating element construction details
Who needs a Sound Test?
New build developers
Conversion projects
Building Control
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Frequently asked questions about Sound Test
When is a sound test required?
For all new-build dwellings and conversions where there is a separating wall or floor between habitable rooms of different dwellings. Detached houses only need testing if they share a wall with another dwelling.
What are the Part E pass criteria?
For airborne sound through walls: minimum DnT,w of 45 dB. For airborne through floors: minimum 43 dB. For impact sound through floors: maximum L'nT,w of 62 dB (purpose-built) or 64 dB (conversions).
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