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?