sound tests pass first time

Sound Tests – How to pass first time

Some of the most common reasons why sites fail sound tests, and how to avoid them!


Testing booked in too soon

It’s critical that building work has reached the point where testing is possible

The sound testing procedure is for use on buildings which are ‘finished but not furnished’. So, if the internal and external doors aren’t fitted, or if you haven’t got the front door on; then you shouldn’t be having the sound test yet!

When you book your test through Peak Acoustics we provide you with our handy site readiness checklist. Be safe in the knowledge that you’re ready to test.


The wall or floor being tested may have excellent insulation properties, but if sound passes around the sides it will still fail.

Every sound test measures how much sound energy passes from source room to receiving room. The easiest way to reduce the energy that passes from one room to the other is to have insulation between the source and receiver. i.e. insulating the wall or floor that the sound travels through on its direct path.

But this isn’t the whole story, enough sound energy can still pass around the wall or floor through any gap it finds, leading to a fail result. This is known as flanking, where sound ‘flanks’ around the partition.

Flanking can be hard to detect before the sound test occurs, but at Peak Acoustics we are able to ensure it isn’t an issue by checking your plans and construction specifications to find any weak points.

Insufficient insulation

Sometimes it’s as simple as that. Sound insulation is easily be overlooked and is the main cause for most failed tests. Download Building Regulations Part E, available for free here. It contains all the basics for developers to find out about the minimum requirements for dwellings and other spaces.

If you have a question, why not call our experts on 0330 043 1764. We’re open 8.30 to 5.30 weekdays and always happy to help!

The wrong kind of insulation

Insulating a partition wall or floor is often more complicated than it seems. This is because sound testing results are calculated from performance measured across 16 frequency bands from 100Hz to 3.15kHz.

This means that the type of insulation required varies, depending on several factors. For example, if the existing/proposed construction of the partition is poor at blocking low frequency sound; then high mass insulation is needed. But if the issue is high frequency sound, then high mass insulation is ineffective.

At Peak Acoustics, our clients benefit from expert design advice and checking of plans & proposals. We can detect issues using our cutting-edge suite of buildings software. This allows diagnosis and remedy for sound insulation problems by performing virtual sound testing.

Speak to the experts today!

0330 043 1764