STC Ratings: Installation matters

Sound Transmission Class (STC) is a rating system to measure how well building assemblies stop airborne sound from 125-4000 Hz. STC is used to evaluate interior walls, ceilings, floors, doors, windows and exterior wall configurations where sound transmission is important. This is especially important for owners or developers in the hospitality industry to consider as the amount of sound that flows through sleeping rooms can have a negative impact on the guest satisfaction rating and minimum STC ratings are listed in the building code.

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