I have really noisy neighbours. I live in a semi detached house that has terribly thin walls. Had various arguments over things, the latest being the 17 year old next door bouncing a basketball in the house constantly, sounds like a bowling ball, if he's not bouncing it in the house he's been outside this afternoon doing it (cant complain at that but inside is ridiculous). To top it all off he's sporadically got music on loud too and his mums in, another total joker.
Anyway Ive had enough so been looking into sound proofing, anyone had experiences with doing it and what to use. I was thinking of creating a partition against the adjoining wall, say bewteen 5-10cm in depth and filling it with loft insulation, then plasterboarding it and plastering the plasterboard, therefore hopefully creating an 'sound trap'. But been looking around and seen some foam sheeting and some other 'board' thats around 3cm thick. Obviously the thinner the better as dont want to lose loads of room space.
Never done anything like this before so any suggestions are quite welcome.