There are many different types of underlayment to choose from, but they all serve the same purpose. To line niche shelves, for instance. ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. I used 1/2 Hardibacker board over the studs and then used the Kerdi membrane over the Hardi. Sweeby-Can you clarify- I undestood that the thinset would tend to dry out from the thirsty hardi or skim over from the air; so how does booking the Kerdi help with the first? I hope you made the guy flood test his work prior to tiling the shower floor. Cement board is the most common and widely-known backer board. We want that inside corner able to move. That means that you do not have to rely on a surface membrane or worry about the board failing if the core is exposed to water. Since the existing wall board will be removed, I'd prefer to go a little extra and install a water proof cement board type base so the tile has a solid substrate even if it were to get wet . The Kerdi/Daltile TS underlayments do have some valid applications such as in steam shower installations where a bullet proof vapor barrier is required. Thanks. After roughly two days I would fill the corner with silicone. Once you have selected the right sealer, follow the manufacturers instructions and apply a generous, even coat over the entire surface of the Hardie board. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Fixing that is not that easy though. I've never had a failure. Not even the plumber's fault as it was just a bad valve. Will be doing a bathroom gut and will be laying durock cement board over plywood sub floor. There is a product called Kerdiboard you might want to look into. Ultimately, the decision between a Schlter system or a cement board comes down to the particular application and the goals the user has for the floor system. Modified thinset adhesive is a premixed product that contains latex or acrylic components which make it quite a bit more flexible than regular thinset adhesive and therefore better suited to some applications. Blocking should be constant across this area when openings are larger than your fist. Well, DH said he had virtually no time to work with the stuff before it dried out, so he switched from my spritz bottle to a sponge. Wedi showers feature a pre-sloped base that is already installed. is the contractor creating a waterproof schluter-kerdi shower? Do you have any pictures? I can take a bit of it off the wall and roll it into a ball. When it comes to applying KERDI, however, it is advised to use a regular thinset that includes portland cement as its main component. It worked well - just like wallpapering. If any is found, wait a few more hours and then re-inspect. Once the primer is completely dry, use a roller or brush to apply a coat of your chosen KERDI membrane adhesive over the entire surface of the wall, overlapping the edges slightly for full coverage. Kerdi Membrane Over Greenboard (Is It Recommended?) Politique d'Utilisation des Cookies de Houzz. For the floor I make a dry mix mud base and then the Kerdi membrane. The most important thing to remember when applying the membrane over the cement board is to make sure the surface is clean and free of any debris, dust or other contaminants. A complete schluter shower kit is like $700-$900 depending on the size - this includes the pitched foam shower pan.
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