Originally Posted by
sclittlefield
Yes. It appears to be the same thing. And it is very similar, thought not quite the same thing. I don't think it will work equally as well, but I do know it will work well - I've done it (not with underlayment, but with the microfoam used in shipping large screen tv's), and it worked. It's bulkier and heavier, but could be more obtainable.
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