RedGard is a ready-to-use, liquid formula that creates a seamless waterproof barrier and prevents common cracks from occurring in tile, stone and grout. You can apply RedGard to concrete, cement backerboard, exterior grade plywood and exterior decks. It also bonds directly to metal and plastic drain assemblies.Click to see full answer. Similarly one may ask, can you use redguard on plywood?Redgard can be used as an antifracture membrane over a properly prepared plywood subfloor.Subsequently, question is, can you tile on top of RedGard? You”ll be fine with thinset over Redguard on walls. It’s recommended for waterproofing niches, shelves, and entire shower walls when tar paper or poly are not used as a vapor barrier behind the CBU. Also Know, do you need RedGard on Hardibacker? As long as it’s Cement Board & not some crappy “almost” cement board stuff. You really don’t need the RedGard, but the more protection the betterso go for it. And yes, you can do the boards beforehand. But, hit the filled seams & screws (your weak points) as soon as a panel is ready to give it some time to setup.How long do you let Thinset dry before applying RedGard?Let this first coat of RedGard dry until the panels appear red in color. This took about 1 to 1.5 hours. Drying time depends mostly on temperature & humidity levels and the surface will appear pink until the the RedGard has completely dried.
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