Vibration

Hi, I recently bought an 02 civic. It looks clean and all but everytime i drive over a rough stretch of road and when the car starts vibrating, my dash starts to rattle. Is this common to anyone? I plan to do a good sound insulation job but where should I start? Help me pls somebody

Check all the screws holding it together, has it ever been taken off? they might not have put it back on right...