This sheething material looks kinda hard, like impact hard. A great sound absorber always follows in the way of being soft so it can soak the sound, something hard will bounce it around some, but of course this stuff has mass to it, and its probably softer then steal so ya you would hear a difference use this sheething stuff. A better cheap sound absorber would be carpet foam $2 for 6x2 sheet...... or try foam padding, that looks similar to high grade acustic foam, its got odd curves in so that the sound that does bouce off of it it does irreguraly (back on itself), goes for $6.