the rubber stuff is anti-vibration, it so it acts like sound deadening for the panel in a vibration sense, but it doesn't do much to prevent interior sound reflection from the surface if that is what you trying to reduce.
You definitely want to leave it, And if it is between two surfaces, dont separate them. If you stuff is a pad of some kind, I'd go right over it. If its some kind of coating, check with the maker of it. Also make sure to check for drip holes and cover them before spraying so what you are spraying doesn't plug the holes.
You definitely want to leave it, And if it is between two surfaces, dont separate them. If you stuff is a pad of some kind, I'd go right over it. If its some kind of coating, check with the maker of it. Also make sure to check for drip holes and cover them before spraying so what you are spraying doesn't plug the holes.
