What's the Difference: More Moisture-Resistant Drywall ...
This drywall has an inorganic facing of fiberglass, which is less likely to promote mold growth. Myron's Feedback: I also tape this drywall's seams with fiberglass mesh and setting-type compound, which is less water soluble. Early products were really coarse, which posed a finishing problem, but newer versions are a lot smoother.