Quote:
Originally Posted by Kamero6
Every time I look at this sealant applied on the floor / metal sheet of the car (by a robot most probably), I think the factory does it for acoustic reasons? Am I right? Or it's just my imagination?
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You are correct, I believe it is to provide stiffening to break-up structural modes - it changes resonance so it is less offensive/problematic. It doesn't behave like "deadner" because has hardened and lacks viscoelastic and elastomeric properties. That said, I would expect some structural resonance to be reduced when compared with/without.
We saw the attempt at "deadener" in the doors along the outer skin (the stuff that I just peeled off).