Sound Deadening material on floor boards

[Harvey_Ferris (63 FHC 67 2+2 newhillgarage.com)]

See this recent thread. Down near the end. The 3M product.

Boot Floor Sound Deadening

I used a similar product, no issues. Once you run a roller over it to bond it to the boot floor it’s only about an eighth of an inch thick. I also left the rust promoting pad off of the underside of the tank.