NEED ADVICE: Moved into new apt, ceiling vibrating out of control!
Hey guys, need your advice. I recently moved into a 2nd floor apartment in a 3 floor building. It is a 148-unit studio apartment complex to give you an idea of the scale. I noticed that whenever my upstairs neighbor walks around a particular portion of her studio, her floor/my ceiling shakes/rattles/vibrates out of control. There is very poor insulation to begin with between the floors, but this is something else.
At first I thought the person above me was a 300-lb former NFL offensive lineman walking around in steel-toed boots. But alas it turns out, my upstairs neighbor is a woman, about 5-2 around 130 lbs. I could not fathom how one person could make so much noise without dropping weights or bouncing a ball, or literally jumping up and down. But she assures me, she is not doing anything out of the ordinary.
So my question is, is this a case of a floor board in disrepair? I have lived in apartments before, and I have never heard of floor/ceiling transfer so much noise and vibration between two floors before. I would like to know what you guys think is wrong with the flooring that would cause the noise that I described, so that when I go to management they don't think I am a total nutcase. Experts, please chime in! Like I said, the girl upstairs says she is just walking, but for me one floor below it sounds like a weight is being dropped the way the floor/ceiling buzzes and shakes.