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Sound comparison: standard drywall, QuietRock, Green Glue

REPOSTED FROM MY PREVIOUS BLOG:

By knocking on a wall, it gives you some idea of how well dampened it is for certain types of noise...or not.

I made a little video demonstration in my own home to compare the audible differences between making an impact noise on normal, uninsulated gypsum drywall and two alternatives. The first example shows how it sounds to knock on a hollow piece of 1/2" gypsum board -- typical for mid-century American homes. Then compare it to:

1) a second layer of sheetrock glued on top of the original drywall with Green Glue inbetween the two layers-- no demo required

2) a layer of QuietRock 525 that replaced the existing layer of gypsum -- demo required. Original 1/2" drywall was removed and fiberglass insulation was added before screwing the new QuietRock into the wall studs. One layer only.

Notice how "dead" the Green Glue wall and the QuietRock sound, compared to the original drywall!

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Comments

  1. Ryan W.December 23, 2010 at 6:47 AM

    looks like the volume of the sound is roughly proportionate to how hard you knock. : )

    ReplyDelete

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