To figure out what kind of insulation you need, it’s important to understand Sound Transmission Class (STC) and Noise Reduction Coefficient (NRC) ratings.
STC measures the ability of an assembly to reduce the level of sound decibels transferred through walls, ceilings, and floors.
NRC measures the percent of sound directed at a surface that is absorbed by the insulation.
Insulation with a high NRC rating will help improve a structure’s STC rating. Higher NRC means better sound absorption
In addition to the noise reduction benefits that acoustic insulation provides, it can also improve the comfort and energy efficiency of spaces by offering thermal performance.
Reducing unwanted noise creates a more comfortable living space. To control sound, here are areas of your home to focus on:
Windows and doors. Loose doors and windows that rattle may increase the amount of sound waves being transmitted in your home. Sealing these areas can help vibrations and make the space quieter.
Walls. Insulating walls helps lower room-to-room transmission of sound.
Appliances, pipes, and ducts. Adding sound control insulation helps reduce the level of noise produced by equipment.
Areas that see high traffic often have excessive noise. Incorporating sound control helps these spaces be more welcoming and comfortable. Places that need acoustic control include:
Audio spaces. Theaters, auditoriums, and studios require high volume audio. Acoustic insulation boards are typically installed in the walls and ceilings of these spaces to prevent sound from getting out and transmitting into other areas.
Concourses. Designing public spaces to absorb sounds helps reduce the noise of people moving from one place to another.
Offices and classrooms. Places of work and study require concentration, and unwanted noise can cause distractions, ruin focus, and hamper productivity. Installing insulation in walls, floors, and between desks can reduce noise and helps create a more comfortable, productive environment.
HVAC equipment. These systems can generate significant noise, compromising the comfort and utility of the spaces they’re installed in. With properly-installed insulation, these noises can be absorbed and minimized.