I have been reading and trying to understand the recent new part E building regs regarding sound proofing. I used to be a bricklayer and can turn my hand for most DIY jobs so would like to do as much as I can in the small flat I am converting. I don't know if my reading of the regs is right it looks like all the sound proofing system etc has to be done by a accredited professional? anyone tell me if this is the case please.