Hanging Two Layers of Drywall


Old 08-15-03, 05:51 AM
Thread Starter
Join Date: Jun 2001
Location: Pennsylvania
Posts: 240
Hanging Two Layers of Drywall

I'm installing a partition wall, separating one large bedroom into two. My architect suggests hanging two layers of half-inch drywall to help with sound reduction. Three questions:

First: should I stagger the joints between the layers?

Second: what screw sizes should I use for the first and second layers?

Third: do I need to tape/mud the first layer?

Any other suggestions?

Thanks much!
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Old 08-15-03, 06:42 AM
Join Date: Nov 2001
Location: Taylors, SC
Posts: 9,483
Here is a howto on soundproofing:


Staggering the wall studs to prevent a continuous path for the sound is important.

For two layers, taping will not be needed for the first course. Offsetting the seams would be a good idea. 1.25 inch for the first course, 1.75 inch for the second course.

Hope this helps.

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