[/quote]I would like to use the extra bag to do between our walkin/ensuite wall and our sons room. Hubby reckons we don't need it because you just shut the ensuite and WIR doors and that will act as a buffer. I think the more soundproofing between us and teenaged boys as we can get the better, lol. But all that aside, unless we are actually here when gyprock goes up and we can get in there with only one side done, it won't happen anyway.