Greenboard isn't that much more expensive, so even if it offers a tiny
benefit it's probably worth it.

My cellar gets very wet in the summer, as I'm cooling 75 degree humid
air down to 57 degrees (meaning there's some dripping and
condensation). So I'm glad I went with the greenboard.

Shaun Eli
http://www.BrainChampagne.com
Brain Champagne: Clever Comedy for the Smart Mind (sm)