If you are designing a commercial office space that needs strict acoustic performance standards, you will need to complete formal sound transmission testing for your partition walls to confirm they meet your project requirements and local building codes. This step-by-step guide will walk you through how to properly test the sound insulation performance of EPS Cement Sandwich Wall Panels, so you can confirm they deliver the acoustic privacy you need for your office.

The first step before you even install the panels is to review the manufacturer’s official test data for the specific EPS Cement Sandwich Wall Panel product you are planning to use. All high-quality commercial grade panels will have been tested in a certified acoustic laboratory to get an official Sound Transmission Class (STC) rating, which measures how well the wall blocks airborne sound. This lab test data will give you a baseline idea of what acoustic performance you can expect from the panel. For example, a standard 100mm EPS Cement Sandwich Wall Panel will typically have an STC rating of around 40, which means normal speech on one side of the wall will be inaudible on the other side, while a 150mm panel can reach an STC rating of 45 or higher, which is suitable for high-privacy meeting rooms and executive offices. It is important to get this official lab data from the manufacturer before you start your project, so you can select the right panel thickness for your acoustic requirements.

Once your EPS Cement Sandwich Wall Panels are fully installed on site, you can complete a field sound test to confirm the real-world performance of the finished partition, which is often required for commercial building permit approval. To do this test properly, place a loudspeaker on one side of the partition wall that plays a standardized pink noise signal at a consistent volume level. Then place a calibrated sound level meter on the opposite side of the wall, and measure the difference in sound pressure level between the two sides of the wall. This field test will show you exactly how much sound the installed partition is blocking. It is very important to make sure there are no gaps or unsealed joints around the edges of the wall, at the connection points to the floor, ceiling, and adjacent walls, because even a small 1cm gap can drastically reduce the total sound insulation performance of the partition. If you properly seal all the panel joints and perimeter gaps with acoustic sealant, your installed EPS Cement Sandwich Wall Panels will perform almost exactly as well as the lab test data promised, delivering the quiet, private office environment you are targeting.