Sound Insulation Testing
Sound Insulation Testing: What You Need to Know
Since July 2003, pre-completion sound insulation testing has been a legal requirement under Part E of the Building Regulations. At APT Sound Testing, we are a UKAS-accredited sound insulation testing laboratory offering expert guidance, fast testing, and reliable reports to help you meet building control sign-off requirements.
What Is Sound Insulation Testing?
Sound insulation testing measures how effectively walls, floors, and ceilings reduce the transmission of airborne and impact noise between adjoining rooms or dwellings. It is required for:
- New-build residential properties
- Conversions (e.g., commercial-to-residential)
The goal of Approved Document E (England, Wales, and Northern Ireland) is to limit noise disturbance between homes, protecting residents’ quality of life.
When Is Sound Testing Required?
All developments built after July 2003 must undergo sound insulation testing. Typically, 10% of each type of separating wall and floor construction must be tested. Tests are carried out between adjoining rooms across party walls or floors.
How to Prepare for a Sound Insulation Test
Proper preparation increases the likelihood of passing the test on the first attempt. When you book with us, we provide a detailed checklist to guide you. Here are some essential steps:
- Minimize site noise – Avoid use of radios, power tools, or alarms.
- Complete all internal constructions – Walls, floors, ceilings must be finished.
- Fit windows and doors – Fully installed, glazed, and closed.
- Install and close ventilation systems
- Hang and close internal doors
- Install skirting boards, sockets, and light switches
- Do not lay final floor finishes – Bare structural floors are needed for impact testing.
- Keep test rooms empty and accessible
- Ensure no workers are on-site during testing
- Provide access to both sides of separating walls/floors
- Ensure 240v (50Hz) power is available
How Many Tests Are Required?
The number of tests depends on your development size and construction types. For example:
- Small to medium projects (up to 10 units): Often require one “6-pack” (2 airborne wall tests, 2 airborne floor tests, and 2 impact floor tests).
- Semi-detached houses: Typically only need 2 airborne wall tests.
We’ll assess your project and confirm the exact testing requirement when you request a quote.
What If My Building Fails the Test?
Don’t worry, failures can be rectified. If your development doesn’t meet the required standards, our experienced acoustic consultants will suggest targeted acoustic upgrades to help you pass on retest and achieve compliance.
Why Choose APT Sound Testing?
- UKAS-accredited for peace of mind
- Nationwide coverage across the UK, including London
- Expert support from design stage through to final testing
- Fast turnaround and clear reporting
- Experience with residential, commercial, educational, and care buildings
Need help with your project?
Call us today at 01525 303905 or fill out our online contact form. One of our friendly acoustic and air tightness consultants will be in touch to guide you through the process.