I have a 3 season room in the back of my house that will soon be remodeled including insulated walls and smaller windows to be used as a year round second living room area with wood stove. My problem is high traffic noise on my street I'm trying to reduce. The one wall, which most of the noise seems to infiltrate through will be re-framed and solid with no windows, but I want to install some type of soundproofing material with the insulation. Will simple foam board do the job or should I buy something made for this purpose. Any recommendations would be great. I know removing the windows from the wall and insulating is a good start but I want to do the best I can to reduce the noise while I'm at it.