Is it worth insulating interior walls and floors between 1st floor and second (two story home). I live in Michigan. I've been told it makes a nice sounds barrier, but I have cold air returns and heating ducts that allow for a lot of sound to travel anyway... just curious to see what the experts think.
Answers:
1Hello from a fellow michigander...
As far as insulating the floors, in the summer, upstairs tends to be much hotter than downstairs. Insulation COULD prevent some of the heat from rising, thereby keeping the upstairs a bit cooler.
Interior walls could be insulated as well, but I don't really see much of a point to it myself. Unless, of course, you are keeping some of the rooms in your house cold on purpose to save on heating costs (My wife and I do this), in which case it would help keep the cold air from spreading from the closed off room to the others.
One thing to consider is the spray in insulation. I am not sure off hand what it is called now, but it goes in as a foamy liquid and solidifies quickly, making an awesome insulation. This is best on exterior walls, but could probably be used interior as well. A few small holes which are easy to patch over, and it's done.
Good luck!
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