How is sound reducing "before" and "after"? Or do you have a good "before" to judge from?
Was that
two of these boxes/kits: BLACK, 20 SHEETS -- 12.1 x 23 in.; 39 sq. ft. I see them on Amazon for $150 each.
How does Fat Mat compare:
50 Sq Ft Rattle Trap FatMat 80 mil Bulk Pack Install Kit Included : Amazon.com : Automotive It's $93 for 50sq ft.