Can Redgard be used over drywall?

It’s true that RedGard can be used on drywall, but when all their product information is carefully considered, it is not the case that RedGard can be used on Drywall in a wet area. As far as I can tell, there is no industry standard that supports the use of a liquid membrane on drywall in a wet area.Click to see full answer. Considering this, can you waterproof drywall?Yes, you can make drywall pretty much waterproof if you coat it on all sides and edges with water-based urethane before you install it. The secret tip to making the drywall waterproof is to coat the paper surfaces of the drywall, including the edges, with clear water-based urethane BEFORE you finish the drywall.Furthermore, will RedGard stick to paint? RedGard Creates a Waterproof and Crack Resistant Membrane Applying RedGard to any surface is super easy. If you can paint a wall you can use RedGard no problem. Regarding this, can you put RedGard over joint compound? Covering over the joint compound with thinset wont solve your problem. Thinset is not waterproof, water will penetrate and you will have issues. You have two choices, either remove the joint compound, and mud and tape with thinset or use a waterproofing membrane like redgard over the cement board and joints.What is waterproof drywall called?Drywall can be primed and painted to be waterproof. Although water resistant drywall — commonly referred to as greenboard or blueboard because of its color — is available at most home improvement stores, you may find yourself needing to waterproof your current drywall.