@JohnGleason - Thanks for the good words. oz. I put it on the rear tub wall from floor to ceiling at first, but I can easily remove it if it should go OVER the tub flange. Make sure your bottom row is 1/8 inch from tub deck. If the goal of communism is a stateless society, then why do we refer to authoritarian governments such as China as communist? site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. Work quickly so that the adhesive doesn't have time to develop a skin. Push plastic under tile gap. Are you saying the backerboard is hanging over the flange a little? Where do you cut drywall if you need to remove it but still want to easily put it back up? How to tell the difference between groß = tall or big, People recluded in a penal reservation, who believe they are on Mars but they are actually on alien-invaded Earth. Not level where drywall and backer board meet. Two main reasons. Seems like cheap insurance to use something better than drywall? How do I meet up with the rest of the room. Normally that tub flange to substrate should be filled with an ASTM C920 sealant that is normally a 100% silicone or polyurethane sealant. Standard drywall has always been fine for me. Lay out my tile design and calculate and install tile letting the last row of tile come within 1/4" of pan. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. Wonder board (cement board) on top of the drywall. Asking for help, clarification, or responding to other answers. What makes employees hesitant to speak their minds? Its made from cement and sand, and is reinforced by fiberglass mats on both sides, so it’s impervious to water. No transitions for me. An intuitive interpretation of Negative voltage. Last phase: apply Three (3) coats of Aquaq defense waterproofing membrane solution to all surfaces applying heavily paying close attention to the bottom of the cement board and the shower pan. Screw in backer board using roofing nails and approved screws. Why would the military use tanks in a zombie apocalypse? An alternative in this case is to use 5/8 for the rest of your room and transition under tile work. If you have a leak and your backer doesn't disintegrate, the lumber behind and below it will rot, or whatever is below that. Do I need to install cement backer board on the wall above a tile shower surround? How do you become a referee for a math journal? That’s why I don’t want to use a traditional cement tile backer. Green rock doesn't resist moisture well enough to provide the protection you need for walls that actually get wet, such as those in shower stalls or tub surrounds. Push plastic under tile gap. oz. This type of backer board is lighter than cement board and is ideal for damp spaces like the tub surround in the bathroom, although it can become damaged if water gets behind it. Asking for help, clarification, or responding to other answers. It is designed to bond most plastic surround tubs to waterproof drywall, wood, sanded tile board and ceramic tile. Is your tub installed? Why does pressure in a thermos increase after shaking up hot water and soap? First is the tub tub deck isn't exactly flat. Then apply a generous amount of thin-set to the bottom bathtub tile and position it 1/8 in. Tub Surround Adhesive with low odor, low VOC and easy water cleanup is an ideal interior construction adhesive. Gerry. Note that on curved tub deck you might have to be 1/16 of an inch on some parts and much bigger on others. I strongly suggest that you hide backer to drywall transitions under tile. Either stopping the cement board above the tub flange or alternately shimming it out and dropping it down near the tub would both be good options. The only thing I questioned was caulking the tile to the pan: seemed to me this would trap any moisture coming down the "barrier".
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