Atypical drywall install

[Jerry Simon]

In the garage attic, I saw these metal nailer-strips (?) attached to the bottoms of the trusses, and the garage ceiling drywall was screwed into the strips. Normally, the drywall would be nailed/screwed to the bottoms of the trusses. In fact, in the house attic, the drywall was nailed to the bottoms of the trusses. Why so in the just garage? Some sort of fire-separation thingy???

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[hausdok]

Sound attenuation?

OT - OF!!!

M.

[Chad Fabry]

Yeah. It's resilient channel. It's excellent for sound attenuation but it works really well at leveling out of plane studs or rafters too. I use it on just about everything I build for both those reasons.

When used as prescribed by code, RC can extend fire ratings.

[kurt]

Garage band?