Just bought a new townhouse...
& to our surprise, there's quite a bit of air traffic noise first thing in the morning & at dinnertime, plus intermittently all day long. No airport for miles, but lots of planes & helicopters to & fro.
We have sliding glass doors in the bedroom & living room. And there's no attic - a flat roof & high ceilings in the bedroom & living room.
The windows are already double pane. Will special soundproof windows help?
Can we put something on the flat roof? Or is a creating a new recessed ceiling the way to go?
Please help. Thanks.