The insulation went in without incident. I walked into the house on Friday evening and there was no echo. I had no idea that I would walk in and be greeted with silence and that it would be as deafening as gong bell (have some old sketches somwhere about making my door bell be an actual rope pull church bell). Anyway... it was the first time I could stop and feel a bit.. um... hmmm... not really sure how to phrase it... it's like I could feel the thickness of the wall as an extension of my own skin... like I just slipped on a huge wool (and wood) sweater.