Because it’s specially designed for the wet areas in bathrooms and kitchens, it’s hard, durable, naturally moisture- and mold-resistant, and won’t rot, disintegrate or swell when exposed to water. What kind of drywall should I use under kitchen or bathroom tile?Click to see full answer. In respect to this, can I use purple drywall in shower?The process for installing purple drywall is the same as standard drywall. Besides its mold and mildew resistant properties, purple drywall is also fire-resistant. Ideal applications for purple drywall are around toilets, sinks, vanities and as a tile backer board for shower ceilings or kitchen/bathroom backsplashes.Also Know, why is some drywall purple? National Gypsum has developed Purple drywall that is moisture, mold, and mildew resistant. This means less water and mold damage in homes keeping construction debris from landfills. In addition, within the line of Purple drywall products, are sheets that stand up to abuse and impact. Subsequently, question is, can drywall get wet? While drywall is pretty sturdy, when it’s exposed to water for too long it can get damaged. It may lose its structural integrity, becoming soft and weak. Depending on what category of water drywall is exposed to, and how wet it got, you may be able to save it. If the drywall is soft, it is wet.Should you moisture resistant drywall in bathroom?According to ASTM C 1396, Section 7, water-resistant drywall can be used in wet locations such as behind tile in bathtub or shower stalls. Caution should be taken when using greenboard and other water-resistant drywall panels for ceiling applications.