Sheetrock in shower is a waterproof drywall used for shower walls. It is moisture-resistant, durable, and easy to install. Sheetrock in shower can be painted or tiled to match the surrounding decor. However, it is important to use a vapor barrier behind the Sheetrock to prevent moisture from damaging the wall. Sheetrock in shower is a cost-effective option for shower walls and can be installed by DIYers with basic skills.