30 Feet Of Awesome!
Crutchfield Customer Review (What's this?)
I debated long and hard due to the additional cost of the tape how necessary it actually was to the installation process. I decided to bite the bullet and tape every single edge and seam of the Dynamat for one reason: to prevent butyl seepage. I have an all black van which gets extremely hot in the summertime. Because I use my cargo van to haul film production gear, the last thing I needed was to risk butyl seepage getting on any of the cargo interior or my gear. When it was all said and done, I'm glad I went the distance on the tape. It was well worth the cost after seeing the finished installation. I consider it cheap insurance in preventing butyl getting on any of my gear.
Pros: Professional finished look. Tape sticks great. Easy to work with. Stops butyl seepage.
Cons: It is pricey, but after using it on a complete van, it was well worth it.