: I'd like to know if anyone has STC figures for
: these wall constructions (assuming 5/8" drywall):
: 1) double-double-wall construction (2x4 framing)
: (ie. two double-walls back-to-back or separated by an
: insulated airspace (ex. hallway or thin wiring alley).)
: 2) double staggered-stud (2x6 frame, 2x4 stud)
: 3) double RC+1 wall (two walls, each separately framed
: 2x4 with resilient channel supporting 1 layer drywall)
: In general, how does an RC+1 wall (framed, with resilient channel supporting 1 layer drywall)
: compare to a full double wall (separate frames)?
: What about a frame with RC on both sides?
: Also how does a double wall with thinner framing (2x3s)
: compare with a standard double wall?
: Anyone?
:
: ps. why ask? essentially i'd like to know when
: diminishing returns kicks in, prompting me to opt
: for the thinner construction to save space.
: Double-double really implies 3 completely isolated
: airspaces -- is that overkill... or is it simply a
: few dB more than a standard double-wall??
What is your STC goal?
STC 56
STC 60
STC 62
go to
www.pac-intl.com test certifications page.
they have wall assemblies that perform to these numbers in a lab, Field results will be slighly different, but they have a thinner wall then the double wall options.
