Part E Sound Testing

Verifying the acoustic performance of your building

Aligning the results from professional sound tests with regulatory standards

Sound testing is mandatory for certain new builds and conversions to ensure that noise transfer between walls, floors, and ceilings remains within acceptable limits for occupant comfort and privacy. But the process can be complex, especially when building designs or materials do not automatically meet acoustic performance standards.

Energy Digest will manage these tests for you, providing clear advice and actionable solutions to address noise issues if any arise. Our streamlined approach ensures you will receive the documentation you need to achieve your compliance goals, without any additional stress or unforeseen delays that could impact the success of your project.

Why do you need this service?

Regulatory
confidence

Ensuring your property is fully compliant with Part E standards will ensure a smoother path to Building Regulations approval.

Design
improvements

Our service will help you identify ways you can enhance the sound insulation properties within your building.

Hassle-free
coordination

We will manage sound testers on your behalf, saving you time and allowing you to focus your efforts on other project areas.

Our Process

Arrange an initial consultation,

during which we’ll discuss your project requirements and timelines.

Provide pre-test guidance,

so you can ensure your site is ready for your contractor’s visit. 

Arrange testing with trusted professionals

and manage these works for you.

Conduct your tests,

performing airborne and impact sound insulation assessments as needed.

Review your results

and provide detailed reports with recommendations.

Issue certification

and deliver your final compliance certificates for regulatory approval.

Why choose Energy Digest?

We’re the sound testing provider of choice for countless companies and individuals in the UK – and as soon as you complete your in-depth pre-test consultation with us, you’ll understand why our approach to Part E sound testing is held in such high regard. 
We’ve designed every aspect of this service to ensure the needs of your project are covered at every turn. From carrying out comprehensive tests onsite to providing detailed reports and organising follow-up testing, we’ll do everything in our power to deliver the certification you require for compliance purposes, and the practical advice you need to deliver an acoustically exceptional build.

Fast turnaround time

To help you meet your own deadlines, we’ll book your sound tests as soon as possible. 

Multi-disciplined team

We cover 20+ services in the built environment, with specialists providing high-value calculations and strong advice.

Practical solutions

Our professionals provide recommendations that are calculated to ensure real world outcomes, resulting in cost-effectiveness and high impact.

Expert partnerships

We collaborate with leading UK sound testers and project manage them on your behalf, for no extra fee.

Speak to our
experts today

FREQUENTLY ASKED QUESTIONS

Sound Testing FAQs

Buildings often fail Part E sound tests due to:

  • Poorly installed or inadequate insulation materials.
  • Gaps around fixtures, fittings, or penetrations in walls and floors.
  • Weak junctions between building elements, leading to sound leakage.
  • Lack of isolation between materials (eg, no resilient layers under flooring).
  • Incorrect or insufficient sealing of doors, windows, or other openings.

Sound testing ensures that walls and floors effectively reduce noise transfer between rooms and neighbouring properties. This helps:

  • Improve privacy by minimising sound intrusion.
  • Enhance comfort by reducing disruptive noises from adjoining spaces.
  • Create a quieter and more peaceful indoor environment for living or working.

Yes, sound testing can be combined with services like air pressure testing, ventilation testing, and SAP calculations. Coordinating these services streamlines the compliance process, reduces project delays, and ensures all essential assessments are completed efficiently and cost-effectively.

In some cases, robust details (pre-tested designs for walls and floors) can eliminate the need for sound testing. However, this option is only available if the project follows the exact specifications of the robust detail system. For most projects, especially bespoke designs or conversions, sound testing is required to verify compliance with Part E regulations.

Airborne sound testing vs impact sound testing:
what are the differences?

Airborne sound testing measures the amount of sound that passes through walls and floors, such as noise from voices, music, or TVs. It involves generating noise on one side of the partition and measuring how much sound reaches the other side.

Impact sound testing, on the other hand, assesses the noise produced by physical impacts, such as footsteps or furniture movement on a floor. A tapping machine is used to simulate these sounds, and the noise levels are measured below the tested floor.

Both test types are vital for providing an overall indication of how noise travels within your environment, and which measures need to be put in place to eliminate excess sound.

Spoke with Josh who not only reassured me but asked for a fee that I thought was fair. Thank you Josh. Use again? Definitely.

Steve Quirk

The team really know their stuff – super helpful and always had clear answers to any questions or compliance issues we ran into. Definitely our go-to for any future projects!

Nathan Donnelly

Quick and well priced water calculation service and received an appliance specification report alongside the certificate which was really useful for us and the building control officer, highly recommended!

Ilma Akhtar

Very knowledgeable about building regulations, and the industry. Always goes the extra mile to help out! 5*

Karim Meraga

Still unsure?

We offer free phone call and email support until you’re ready to proceed with us.
Access free support for your project now.

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