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Is there much thermal bridging from the aluminum wall studs?
Do I recall seeing some brochure showing aluminum wall studs? Doesn't that provide a ready path for heat going through the wall (as well as noise)?
Even wooden studs will drop a theoretical R-15 wall to R-11 with 16"OC once the overall heat transmission is calculated---so I would think that the energy compromise would be even more severe with aluminum studs.
So is an RV wall of aluminum studs significantly less energy efficient (and noise compromising) than 2x4 lumber wall studs?
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