Sound insulation pre-completion testing in England and WalesA UKAS accredited service for all projects from small housing developments to commercial schemes

Part E of the Building Regulations requires that new attached homes are designed and constructed to provide reasonable resistance to the passage of sound and that, unless the homes are registered with Robust Details Limited, a sample of dwellings on every new development will have to be tested.

Our technicians and consultants have carried out over 20000 sound insulation tests and have the experience to help you on any scheme. Using our pre-completion testing service gives you:

  • fast response, quick results - testing is arranged around your build schedule and you will receive an immediate indication of test performance on site, with a full certificate/report sent electronically shortly afterwards
  • expert remedial advice if your development fails any of the tests, helping you achieve compliance as quickly as possible. We will, whenever possible, undertake re-tests during the same visit to help you get the pass you need
  • a complete compliance solution if you combine your sound insulation testing with NHBC building control and our air leakage or energy rating services. We will ensure swift communication between teams to clear outstanding technical conditions.

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Had a test from another supplier and failed?

Failure to meet the required minimum standards for sound insulation can result in substantial and costly delays. We can offer prompt remedial advice and re-testing. Find out how we can help

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Planning another site?

Involve our acoustics team at the design stage of your project and they can help you achieve compliance and potentially save you money by optimising your acoustic specification.

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Part E Requirements

Since 2003, all attached newly built or converted homes in England and Wales have had to comply with the sound insulation requirements of Part E of the Building Regulations.

Requirement E1

For new builds, Part E1 requires that you demonstrate compliance by:

  • pre-completion testing; or
  • using the Robust Details Scheme.

For conversions, pre-completion testing is required.

Other schemes such as the Code for Sustainable Homes, EcoHomes and BREEAM may also require pre-completion testing for sound insulation - awarding credits for performance and/or rates of testing over and above the Building Regulations minimum requirements.

Requirements E2 and E3

E2 sets the laboratory performance standards for internal walls and floors within dwellings.

E3 sets the performance standards for the control of reverberation in common internal parts of multi-occupancy domestic buildings.

Need more information on Part E? Visit TechZone

When do you need the service and what's involved?

We usually carry out testing after second fix and before floor finishes (carpets, laminate, tiles etc) are laid. We recommend you book your provisional testing date(s) at design stage so that it's incorporated into your build programme. However, as a minimum, you should book at least 2 weeks before you need to clear any relevant Building Control conditions.

In line with the requirements of Part E, our technicians will test the separating floors and walls between attached properties on a sample basis- usually 1 set of tests per 10 dwellings of similar type and construction.

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NHBC is UKAS accredited laboratory No. 2688.

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