Wheel wells sound deadening...


2012 CR Mazda5 Touring
2012 Mazda5 Touring
White/White, Aero wheels, Dual Motor Performance AWD, Enhanced AP
2008 Mazda5 GT
Just did the front wheel wells only and already feel the difference, I can hear 1/2 of the noise reduced from the interior footwell. The front doors already have the same material, so most of the interior noise I can hear is from the engine behind the firewall and the windows. Now my car feels like a Mercedes lol

Just a though, is that white foam stuff water repellent? If it soaks up water, it'll get heavy and sag the liner (not to mention hard to dry). Any concerns with the external stick on material collecting water?