We have just moved into a new house and we have neighbours that are very heavy footed it seems their stairs joins onto our wall and we can hear them all the time but it seems that can hear them when they walk full stop it really is annoying espeicially when its 12am!! they have a little kid as well but obviously she would be asleep at this time so its them!! I wanted to get the walls soundproofed but havent a clue where to start can anyone help? thankyou