(Question from a reader in India)

If the damping compound can often be applied directly onto the existing subfloor layer, would it cause any problem?

Thanks for the tips — great information. Three Scenarios for Soundproofing a Floor are best.

Reply from Noise Help:

You are welcome! I'm glad you find the information helpful.

Yes, the Green Glue Company (manufacturer of the most popular damping compound used worldwide) recommends applying the damping compound directly onto existing subflooring. On their web page that discusses new floor construction, they say: "Green Glue must be used in between two rigid/hard surfaces to do its job. The best application is between the subfloor and whatever goes on top of that."

Here is another web page from their site that offers some more ideas for using damping compound in floors:
Dealing With Impact Noise


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