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Showing posts from August, 2009

Upgrading existing walls

You can add mass to your existing walls. As I mentioned in a previous entry, I successfully muted some neighbor noise in my apartment building when I added a second layer of drywall on top of the original 1/2" thick wall, with a coating of Green Glue inbetween. This produced better results than simply replacing the original wall with QuietRock 525 . I made the double-drywall solution even more successful by using QuietRock 510 as the second layer of drywall, with Green Glue in between the two. Here's a chart from the Green Glue Company that demonstrates the STC results between different wall solutions. Granted, it's on their web site and not entirely objective -- but because I've had good results myself, I think it's worth noting. Why do I think the Green Glue + layer of QuietRock was better than just replacing the original wall with QuietRock, right on the studs? My theory is that by adding QuietRock directly onto the wood framing, you're still not de