KBS Coatings Posted August 18, 2008 Report Share Posted August 18, 2008 I'm looking to coat the underside of my car with the 3 step rust seal process, then give the whole underside a coat of spray on sound deadener. Can Blacktop be applied over the top of the sound deadener? Or should I leave the sound deadener for the inside of the shell instead? Quote Link to comment Share on other sites More sharing options...
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