got a customer who is convinced she can hear her neighbours through the internal lounge wall even though the house is a concrete pour type. So I dot and dab some blue plasterboard on the lounge walls and skimmed but she's still convinced she can hear them. She's also saying I should of used some insulation between wall and board but with the electric points there wouldn't of been enough room without having to extend wiring etc. What else could I have done regards david