Greenboard is the same as regular drywall. RedGard, on the other hand, is a liquid waterproofing membrane made by Custom Building Products. Thinset with a latex acrylic modifier is best for interior projects, but if youre installing outdoors, you should use thinset with a polymer modified (PM) compound for greater moisture resistance. Making statements based on opinion; back them up with references or personal experience. We recommend our users to update the browser. Kerdi Membrane is a product of Schluter systems. The kerdi membrane will probably do the same, and its regularly installed over drywall which is probably less stable. What are the differences between "paperless drywall" and "cement board"? Yes, Schluter membranes can go over cement board. there should be a small gap between the backer board and the tub. . Plus, most self-leveling formulas harden very fast, so you have to plan carefully so you can mix and pour quickly. How to follow the signal when reading the schematic? Without an underlayment, even the slightest movement of the subfloor can result in cracking of the tile and crumbling of the grout lines. The thin-set mortar should be mixed to a fairly dry consistency and then spread on the surface with a 1/4 inch square notch trowel. Overall, waterproofing behind and around shower tile is a critical part of any installation to ensure that the area is adequately protected from water and moisture damage. In general, the Schlter system is typically more expensive than a cement board, and some people may find this an attractive option for its long lasting, easy to maintain qualities. Let's start! The Kerdi membrane should be applied with the standard procedure, using a hogg brush or a notched trowel to spread the thin-set mortar and a roller to ensure appropriate adhesion. Install the Schluter Kerdi membrane over the backer board using the correct mortar. It could take longer if the space is particularly wet or humid. It looks like you have Kerdi installed on the floor and not Kerdi Board. ), Schluter SET, ALL-SET, FAST-SET or an unmodified thin-set mortar is recommended. What Is the Difference Between 'Man' And 'Son of Man' in Num 23:19? Plus, if you use the mold and moisture resistant drywall, it will be extra insurance against mold. Learn about the options in exterior siding before you choose, Before you pick up a single tile, pull from these tips for expert results, Slip resistance, curves and even the mineral content of your water all affect which tile is best for your shower, We help a Houzz user ask all the right questions for designing a stylish, practical and safe shower bench, This isn't a light DIY project: You'll need heavy-duty tools and plenty of protection for your home and yourself, In steamy quarters, tile needs to stand up to all that water and vapor in style. Thanks to Mongo's earlier post, we knew we'd have to spritz the Hardi -- but found that even that wasn't quite enough. The major drawback to cement boards is their weight, as they are incredibly heavy and can be difficult to cut. Hi.I have a unique situation. You just need a hammer and wonderbar for the walls. We are DIYers who have already remodeled one bathroom successfully, but this is our first time using The Schluter shower system. Caulk the gap. Redgard is a similar product. 3. What is a word for the arcane equivalent of a monastery? If your going to do the job do it right, and give professional advice pls. Look at it this way; Withe Kerdi, you either trust it or you don't. One thing I do like fibercement (Hardie) for is when I need thin strips of cement board. Schluter Kerdi-Shower-T/-TS/-TT 48 in. It allows you to easily and quickly create tile-ready elements in bathtub surrounds and platforms, vanities, showers, shelving, and much more. My floor tiles are 2" x 2"." - Lisa Jasper No - you can not use Kerdi Board on the floor. Cement board, Wedi board, Kerdi board, Hardibacker, Densshield, Durock, Permabase, or Wonder board . "thanks in advance :-) I know so little about this stuff, but when I watch videos (made by schluter-kerdi) everything looks so tidy and perfect - maybe that's not realistic'''" - Lisa Jasper It should look better than that and it's hard to tell but the wall stud spacing looks extreme and more than 16" I could not see if the screw heads where covered in the photos and in the one picture you can see that the screw and washer fitting where not covered. To waterproof Hardie board, you should choose a quality sealer that is designed for use on cement-based sidings. GoBoard is a kind of backer board because the main elements of a backer board are cement, silica, fiberglass, etc. There are many different types of underlayment to choose from, but they all serve the same purpose. Let the mortar dry for 24 hours then test the shower. Allow the adhesive to cure for the amount of time recommended by the adhesives manufacturer. Make sure the floor is level in the shower. You are wise to use a cement board. It's not a matter of trusting the Kerdi. It is important to overlap the edge of the membrane so that it covers slightly more than half of the drywall behind it. Tile Shower SurroundCement Backerboard Location? The Kerdi is essentially replacing the backerboard. True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. Ideally the DalSeal TS would fold into the gap between the wall and ceiling concrete board. Kerdi membrane prevents water damage and mold development. However, you do still have to take care to waterproof the seams and the fastener penetrations to create a waterproof assembly. This will ensure a strong bond between the KERDI membrane and the substrate. Fixing that is not that easy though. Cement board (cbu) is not waterproof, but is not damaged by being wet. The back side of the drywall fails and it is just as bad or worse than if it had an issue on the tile side. When it comes to installation, a Schlter system is typically easier to install than a cement board, and it also allows for more design freedom as it does not require a traditional waterproof layer. Once its cleaned, use caulk to seal all of the seams where the cement board meets the walls. What to use to flatten and prep wall before installing Schluter Kerdi membrane for tiling? When doing so, it is important to ensure that the drywall surface is clean and free of dust, grease, and loose paint. The 30-in. 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? When installing Schluter Kerdi Membrane over cement backerboard: Should I use Alkali Resistant Mesh Tape and thinset on the seams of the backer board (for long term durability to prevent each board moving independently thus preventing cracking) prior to installing the Kerdi membrane. This will help to ensure that all drywall is completely covered. Various products can be used to waterproof shower walls such as water-resistant drywall and cement backer boards. What precautions should I take installing tile on a backerboard in an area surrounded by cement? The gridlines printed on the surface are beneficial for the installation process, also allowing for quick, neat cuts with a utility knife. Slap it up comb it out, leave every ridge tall and perfect. Ceramic and porcelain tile, more than almost any other surface material, need a stable . Then cement, sand and water are mixed together to a crumbly consistency and floated over the lath to form a flat surface. When applying the primer, make sure to cover all surfaces thoroughly, as these will be completely covered by the KERDI membrane. Why are physically impossible and logically impossible concepts considered separate in terms of probability? True cement board (Durck, Wonderboard) is my first choice as a tile or Kerdi backer. Run a damp towel over the cement board surface to dust . I used this to seal a 3 1/2 by 6 1/2 foot shower with 7 foot walls. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Your email address will not be published. Properly waterproofed Hardie board should last for many years. Your email address will not be published. DIYers on this forum seem to have nothing but problems with Hardi. 173 upvotes. 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. . Ratings (91) (5) (91) (3 . Finally, use a roller or brush to ensure that the membrane is secure and has no wrinkles or air bubbles. If you are laying tile on floors that are wavy or out of level, self-leveling underlayment is a great solution. Since my guys and I will be doing this for the first time next week, I 'd like to take advantage of your 'learning curve.' Can I install Kerdi board just on the walls of my shower and use a PVC membrane on the floor? Both Kerdi Board and cement board are designed to smooth out uneven spots on the installation surface, create an unbending layer that wont flex underfoot, and also provide a waterproof barrier. First Kerdi can be installed on drywall or cement board. This means that even if your waterproofing system leaks, the cement board will remain intact. Also, apply the acrylic mastic between the Create curved designs around pipes or columns using the vertically-grooved KERDI-BOARD-V, or use L-shaped KERDI-BOARD-E panels to enclose similar. In the worst case, it's OK to cut the Kerdi, remove the damaged section, scrape up the thinset from the areas, and set a new piece of Kerdi. With cement board as a substrate, the key is to ensure proper installation of the membrane. Modified thin-set mortars must dry for the polymers to coalesce and form a hard . First Kerdi can be installed on drywall or cement board. When it comes to using thinset with Schluter products, the Schluter-Systems website recommends using unmodified thin-set mortars specifically designed for use with Schluter membranes. Cement board comes both in 1/4-inch-thick and 1/2-inch-thick versions. Bathroom closets are often catch-alls for anything and everything remotely related to self-care. Jessica considers herself a home improvement and design enthusiast. The back side of the drywall fails and it is just as bad or worse than if it had an issue on the tile side. Start by cleaning the cement board with a mineral oil soap; this will help reduce mold and mildew growth throughout the life of the shower. If you want to go to the extra effort of putting the membrane over drywall, there is no need to use greenboard. How do I align things in the following tabular environment? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. We were using a 3/16 x 5/32 trowel, probably to small. It is designed to form a waterproof layer between cement board and tiles, helping create a watertight installation. She grew up surrounded by constant home improvement projects and owes most of what she knows to helping her dad renovate her childhood home. All it takes is the right preparation. Houzz Pro: One simple solution for contractors and design pros, surfer thanked Avanti Tile & Stone / Stonetech. I usually use Durock. Some being easier to work with than others. As far as the tile/prep work, you are right that he is shifting the blame. Shouldn't take too long, maybe an hour or so. I would get someone else. After roughly two days I would fill the corner with silicone. Need help liner vs liquid membrane question. x 33 ft. Waterproofing Membrane: Kerdi-Board 1/2 in. While cement board and grout are not waterproof, Kerdi is and can even be directly installed over drywall. Preparing drywall for KERDI membrane requires a few important steps to ensure a successful application. You troweled on thinset combing it out then pressed the Kerdi into place? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Here's how to get it right the first time, If you've got a steady hand, a few easy-to-find supplies and patience, you can install a tile backsplash in a kitchen or bathroom, Step 4 in swapping your tub for a sleek new shower: Pick your waterproofing materials and drain, and don't forget to test, Work with your contractors and installers to ensure a safe, stylish curb that keeps the water where it belongs, Get the benefits of a time-honored ritual without firing up the coals, thanks to easier-than-ever home steam systems, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, Out With the Old Tile: 8 Steps to Prep for Demolition, Convert Your Tub Space Into a Shower Waterproofing and Drainage, Steam Showers Bring a Beloved Spa Feature Home.
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