What to do?

[rbinck]

Originally Posted by Ted White

Look at the test results before diving in with any product.

Some of the products mentioned are rather expensive relative to performance.

Welcome to the forum, Ted!

That is very good advise. Do you know of any links where tests have been preformed? Those would be helpful if you do.

[Ted White]

http://www.soundproofingcompany.com/...n_glue_testing

http://quietsolution.com/html/test_reports.html

some products cost a lot per square foot for "good" performance. Some products are more moderately priced for "excellent" performance.

[rbinck]

Thanks. The second link to all of the reports should be very helpful. I guess you use the green glue to put the sheets on the wall or studs rather than drywall screws?

[Ted White]

Actually all scenarios use screws to compress the glue to a thin film. Since you are directly addressing vibration and resonance, the screw density does not create a problem with conduction.

The glue goes in between sheets of standard drywall, noy on the stud edges. Damping requires surface area. There is insufficient surface area on the edge of a stud to provide damping.

[Loves2Watch]

Originally Posted by Ted White

Look at the test results before diving in with any product.

Some of the products mentioned are rather expensive relative to performance.

Hence my post above yours.

[Ted White]

Lowest cost relative to performance is often simply adding a single sheet of 5/8" drywall to what you have now. Adding damping compound yourself would be a step up from that.