Duplex party wall sound barrier test

[@hiwarren]

Thanks for the comments. According to the builders specs the party wall consists of the following:
1" air space between 2 - 2" x 4" staggered framed walls @ 24" centers with R13 Roxul sound insulation
5/8" type "X" fire rated gypsum drywall on both sides
1/2" gypsum drywall for added sound barrier to party wall on the right hand unit

[@user0077]

Thank you for doing this. Just a question. How is the party wall constructed. Double stud with insulation and drywall or is it concrete? Thanks!

[@juliaskagfjord6207]

Thank you for doing this test. I am thinking of buying something and was curious about this!!

[@colebe9427]

Nice duplex

[@mont5068]

I made the mistake of not doing this test.... now i need to figure something out becuase the party wall is quite thin..