I live in a 3 yr old house; single story, 1850 sf, double pane low e glass, with foam(open cell) insulation in the ceiling(against the inside roof decking) and in the 2X4 walls. The house is very energy efficient but has a lot of street noise. A real surprise to me.
I considered re-insulating the interior walls by putting up additional studs and filling it with insulation (really too expensive) and considered putting insulation in the attic ceiling, but builder said it would cause a moisture problem. I even considered a much hyped NASA additive to put in exterior paint. This may work, but can't find anyone-outside the industry- who would say that it does. The cost is the paint, the painter's time and the cost of the additive (which in it self expensive).
Does anyone have any ideas on how to reduce the street noise short of putting in street bumps, wearing noise canceling headphones or selling to a deaf person? Please help me??