So I currently live in a townhouse super close to a 4 lane main road, which can get pretty busy during rush hour. Our master bedroom is on a third level facing the road which we are about 4 meters away. The master bedroom is also made of weatherboard, so I know that it effects sound leakage as well.
Thinking what would be the best for doing up our windows for maximum noise reduction, as we can hear every car that passes by. From what i've been told, our windows are currently double glazed, but they are still not as effective. Would uPVC be that much better or you recommend secondary glazing?