What is STC?

What is STC?

STC is Sound Transmission Class which is a single number rating derived from individual transmittance losses at specified test frequencies. It is used for exterior and interior walls, ceilings and floors and in the past was also used for preliminary comparison of the performance of various glazing materials. If you’re glass needs to meet a specific Db rating, please contact us.


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Glass for windows can be tricky, especially when there are so many things to think about. At Viridian we love glass and have created a tool to help you select the right type based on you, your house and the environment you want to create

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