Glass Mat Drywall for Bathrooms – GreenBuildingAdvisor

CZ 3A/4A (N GA area) – 2001 gut reno

We had a holistic contractor recommend using glass mat/fiberglass-faced drywall in wet areas like bathrooms and laundry rooms. We’d like our assembly to be able to dry to the inside, as we live in an area with a predominantly inward vapor drive (please correct me if I’m wrong here).

Would this kind of drywall hinder interior dry ability? We would most likely use typical latex paint you’d get at big box stores. 

Here’s the rest of our assembly for reference:

Hardie, rain screen, Tyvek commercial, OSB w/ taped seams, Rockwool