I just took a look at its website to see what its product was all about. Not trying to be over pickey becuase I have a major spelling deficency, but when a coperation and its technical writers cannot determine the difference between its and it's--or don't worry about such trivial details--I perfer to continue to shop for companies that pay more attention to details.

Anyway, I used the cheapo hot water tank insulation, the plastic stuff with air pockets. Its noise limiting quality isn't the greatest, but it's a good heat barrier.