Recently installed 4 Polaris ThermalWeld double-pane sliders, in 3 rooms. Previous windows were aluminum frame single-pane, with aluminum frame single pane storm windows. Behind my back yard is a fairly busy road. I'm getting some ringing/resonating in the windows from the traffic noise that I don't recall having before.
For one of the windows I still have the original window and frame; I'm going to install that inside the frame/casing and see if that cuts down the ringing at all. Unfortunately, I already tossed the others.
Anything else I can do about it, short of sticking a foam insulation panel or something in front of the window?