 you'll have a completely waterproof system. Or if you're doing a steam shower, a vapor-proof system that won't have water intrusion issues where you have to tear out that bathroom and do it all over again. So let's talk about it a little bit. In a shower, I do not use concrete board anymore. There's no need. It's gone. It's out of my vocabulary. I put that in the same thing as using the green board drywall. Had its place, I'm not a fan.