Sound Transmission Class (or STC) is an integer rating of how well a building partition attenuates airborne sound. In the US, it is widely used to rate interior partitions, ceilings, floors, doors, windows and exterior wall configurations. Outside the …

2023年3月30日 · When people are evaluating building materials and acoustical products for sound reduction, they rely on the sound transmission class or STC rating of the product. By understanding this rating of materials, we know how much sound will be blocked from going through those materials. It is especially important in commercial construction.

2024年6月15日 · Sound Transmission Class ratings, or STC ratings, play a crucial role in creating comfortable living and working spaces by reducing noise levels and improving acoustic comfort. In this blog post, you will learn about the importance of STC, the factors that influence them, and how to improve soundproofing in various environments.

2016年11月7日 · Below is a list of STC values for common partitions and assemblies, along with their estimated speech privacy and ideal applications in the real world. By utilizing soundproofing membranes and other material on the market, you can achieve these STCs at prices that weren’t previously possible with conventional construction methods.

Sound Transmission Class (STC ) is an integer rating of how well a building partition attenuates airborne sound. In the USA, it is widely used to rate interior partitions, ceilings and floors, doors, windows and exterior wall configurations (see ASTM International Classification E413 and E90).

Below are the STC ratings of various wall assemblies, each presented to help illustrate concepts, improvements and rules of thumb. The estimated ratings are based on laboratory test results from various compendiums of STC ratings.

2025年3月7日 · What is an STC Rating? Sound Transmission Coefficient (STC) – otherwise known as “Sound Transmission Class” – is the golden standard that evaluates how well a barrier, be it a wall, ceiling, door, or window, reduces airborne sound. Essentially, it’s the report card of a structure’s ability to reduce noise.

2025年1月10日 · STC ratings for walls are given according to the amount of sound they eliminate. They are important as it gives you an indication of the level of noise you can expect to penetrate your walls. Various factors can affect STC rating for walls — the higher the rating, the less sound penetration there is. how thick are they?

STC stands for Sound Transmission Class. STC ratings are an established way to average how much sound is stopped by something. STC ratings are used for windows, doors, walls and most building materials. For windows, STC ratings range from 18 to 38. STC ratings are the ONLY way to accurately compare various noise reduction products.

2025年2月20日 · While STC ratings are an excellent benchmark for mid-to-high-frequency sounds, low-frequency noise, such as bass from a sound system, poses unique challenges. Solutions like decoupling wall assemblies, using resilient channels, and combining polyiso insulation with other materials designed to improve the STC ratings of insulation can help ...