Sound Test Part E: Complete UK Guide

Planning a new home, conversion or residential development? A Sound Test (Part E) checks how effectively walls and floors reduce sound between rooms or separate properties. It is an important part of meeting Building Regulations requirements for many new residential buildings and conversions in England and Wales.

What Is a Sound Test?First, the testing team checks that the rooms are suitable for testing. The required equipment is then installed.

For airborne testing, calibrated equipment produces controlled sound and measurements are taken between the rooms.

A sound test measures the sound insulation performance of floors and separating walls. The aim is to check how well a building prevents noise from passing between different spaces.

This is particularly important in homes, flats and other residential buildings where people share walls or floors.

A professional test can identify whether the completed construction provides the required level of sound insulation.
First, the testing team checks that the rooms are suitable for testing. The required equipment is then installed.

For airborne testing, calibrated equipment produces controlled sound and measurements are taken between the rooms.

What Is Part E of the Building Regulations?

Part E relates to resistance to the passage of sound. It sets requirements for sound insulation within certain residential buildings.

Testing can apply to new homes, flats and residential conversions. Some student accommodation and other residential spaces may also require testing.

The exact requirements can depend on the type of project, so it is useful to confirm the testing requirements with your building control professional.

Types of Sound Testing

There are two main types of sound tests used for residential projects.

Airborne Sound Testing

Airborne testing looks at sounds that travel through the air.

Examples include:

• Conversations
• Television sounds
• Music
• General household noise

During the test, controlled sound is produced in one room. Measurements are then taken in the neighbouring room to assess the sound insulation between the spaces.

Impact Sound Testing

Impact testing focuses on noise caused by physical contact with a floor.

Common examples include footsteps and furniture movement.

A calibrated tapping machine is used to create controlled impact noise. Sound levels are measured in the room below to assess the performance of the separating floor.

When Should You Book a Sound Test?

Timing is important.

A sound test is generally carried out when the property is close to completion. The relevant walls, floors, doors and windows should be properly installed before testing takes place.

Testing too early can produce unreliable results because unfinished construction may not represent the final building.

Booking the test in advance also gives you time to address any potential problems before your completion deadline.
First, the testing team checks that the rooms are suitable for testing. The required equipment is then installed.

For airborne testing, calibrated equipment produces controlled sound and measurements are taken between the rooms.

Common Reasons for Sound Test Failure

Small construction details can affect sound insulation.

Common problems include:

• Gaps around walls and floors
• Poor sealing around pipes and cables
• Unsuitable construction materials
• Openings that have not been properly sealed
• Sound bridging between structural elements

These issues can sometimes be corrected before the final test.
First, the testing team checks that the rooms are suitable for testing. The required equipment is then installed.

For airborne testing, calibrated equipment produces controlled sound and measurements are taken between the rooms.

This is why checking the construction before testing can help reduce the risk of delays and additional work.

How Does a Sound Test Work?

The process is straightforward when the property is ready.

First, the testing team checks that the rooms are suitable for testing. The required equipment is then installed.

For airborne testing, calibrated equipment produces controlled sound and measurements are taken between the rooms.

For impact testing, a tapping machine creates controlled impact noise while measurements are taken in the receiving room.

The results are then analysed against the relevant Part E requirements.

First, the testing team checks that the rooms are suitable for testing. The required equipment is then installed.

For airborne testing, calibrated equipment produces controlled sound and measurements are taken between the rooms.

What Happens After the Test?

Once testing is complete, the results are reviewed and documented.

If the property meets the required standards, a sound insulation test certificate can be provided as evidence for building control.

If the property does not meet the required standard, the test results can help identify areas that need attention. Remedial work may then be completed before a retest.

Why Use Professional Sound Testing?

Professional testing provides measured results using calibrated equipment and a structured testing process.

It can also help developers and builders identify potential problems before they cause delays.

For larger developments, arranging testing as part of the project schedule can make the final compliance process easier to manage.
First, the testing team checks that the rooms are suitable for testing. The required equipment is then installed.

For airborne testing, calibrated equipment produces controlled sound and measurements are taken between the rooms.

Sound Test for New Builds and Conversions

Sound testing is particularly relevant when developing new residential properties or converting existing buildings into separate homes or flats.

Planning the testing stage early allows builders to consider sound insulation during construction rather than waiting until the project is almost complete.

This can help reduce the risk of costly changes later.
First, the testing team checks that the rooms are suitable for testing. The required equipment is then installed.

For airborne testing, calibrated equipment produces controlled sound and measurements are taken between the rooms.

Final Thoughts

A Sound Test is an important part of many residential construction and conversion projects. It checks the performance of separating walls and floors and provides evidence that the building meets the relevant sound insulation requirements.
First, the testing team checks that the rooms are suitable for testing. The required equipment is then installed.

For airborne testing, calibrated equipment produces controlled sound and measurements are taken between the rooms.

If you are approaching the final stage of a new build or conversion, arrange your sound testing early enough to allow time for any required remedial work.

Coventry Property Certification provides Sound Test services for new build and conversion projects, including airborne and impact sound testing.