[bigguy69]

Originally Posted by kevmcrae

I did my whole interior and inside my doors and door panels with butyl window sealer from Home Depot! 50 ft roll for $17. Used two rolls. It's half the thickness of Dynamat but like 1/10th the cost. I figured I would just double it up if I needed to. but after putting just one layer on I'm happy.

http://www.homedepot.com/h_d1/N-5yc1...atalogId=10053

was this what you used?