I tried the "peel and seal" aluminum tape with asphalt roofing product to reduce noise in my S2000 trunk. It was easy to install and worked great at reducing noise but the tar-like smell still persists. I regret doing it however I will not peel it off as it will exposed more stinky stuff. The smell has decreased but not as fast as some have claimed and not as much as some have claimed. I will give it a year and see what happens.

However, as it dampens great, I want to use it to dampen the panels on my 71 240z resto. I am thinking that I may be able to paint some substance over (like Nissan did on the floor pan asphalt) it to effectively seal the smell in.

Any recommendations for a paint-able sealant?

Thanks

Plasti-dip or Plasti-dip spray?

Paint with several coats of poly-ureathane paint. Did that with a project at work.

Works to seal off the tar smell, but then the car is going to smell like new paint for a while...

Good idea! Thanks Steve!