Can you use green board for shower walls? 7. Prefabricated sloped shower tray: Schluter-KERDI-SHOWER-LTS, 3. Cut a section of Kerdi off the roll and dry fit it on the hardie. I'm not so sure any of this makes a difference? Its a water-resistant membrane used for tiles and paver coverings. A rubber float can make your work much easier. Can you use KERDI membrane on plywood floor? The seam in the middle I would think could be whichever you prefer. We are going with a grey grout, either delorean gray or light pewter. As an alternative to KERDISEAL- PS/-MV, KERDI-FIX or other suitable sealant can be used to seal pipe protrusions and protect moisturesensitive solid backing panels at the mixing valve. Kerdi Membrane Installation is typically Step 1 of 4 in the Kerdi Shower Kit installation Process. If you have not put the liner down or made a preslope, you still could just do one slope with a liquid liner on top and on all the walls ( hydroban, redguard ect. ) Ideally I would like a fold down slatted wood seat mounted on the wall. Kerdi Trouble - Testing it, have concerns. So, heres my dilemma. Waterproofing strip: Schluter-KERDI-BAND, 6. Schluter recommends different sizes. Different options and thicknesses of DITRA membrane are available to best suit the needs of your project. We are very concerned about any moisture at all getting into the OSB. DITRA-XL is 5/16 (7 mm)-thick and allows for ceramic tile application over single layer plywood/OSB subfloors on joists spaced at 24 (610 mm) o.c. a buddy said J Bridges is now saying he uses modified on top and underneath too. Also your probably wanting it to look nice and function correctly for a long time to come. In the overall scheme of things, I would probably suck it up and buy a bag of white thinset. It's pretty easy to resize pics with this utility. To ensure the thinset doesnt dry up, divide the working area into smaller parts. What Does It Mean When A Guy Spreads His Legs In Front Of You? It's important to note that latex-modified thinset can still be used between the membrane and the subfloor because it is not impervious. Follow the Wood Underlayment installation guidelines as found in the Schluter-DITRA or Schluter-DITRA-HEAT Installation Handbooks for fastening guidelines. Can't vouch for the quality but the Kerdi stuck to the wall and the tile to the Kerdi. Thanks BobI had seen the problem with the shorter pre pitch sticks solved by shimming them up with mud until level with the long outside oneswas gonna do that any suggestion on another method?maybe I'll shim em up with extra lath now that I know need that in there? How soon can I tile after installing KERDI? So, it is safe to install DITRA over OSB. Ouch. Plus, get an extra 20% off with code GIFT20, Fine Homebuilding Issue #313 Online Highlights, The Fine Homebuilding Interview: James Metoyer, 10 Steps to Install Crown Molding on Cabinets, Choosing the Right Construction Tape for the Job, Expert insights on techniques and principles. joist spacing. Contact us: 888-472-4588 Took 2 1/2 bags of thinset, but quite honestly lots either wound up on the floor or got dumped as I did the thing in stages. bags at Lowe's that you can get for less than the cost of a 50lb bag. When to use Kerdi band after mortar installation? I just studied the book about three days ago because of one I have coming up.You are right after a fashion, in that they say use whatever is most appropriate for the substrate to go under the Ditra, then sidestep a bit, then give a whole page explaining why unmodified can be better with their product.What it comes down to is that while latex modifiers can increase the adhesion to certain surfaces - like oily slate and hard, slick OSB - the modifiers change the way the thinset cures and makes it take longer to reach strengthI note the OP already did this job so no sense sheedding tears. I am out of level less than 1/4" from side to side and I'm going over OSB. Feel free to move it if necessary. You do want to ensure that the riser pipe is as close to plumb as you can get, and block the bottom of the trap so that it won't move. Great product. Besides Schluters recommendation, several experts have used DITRA as an uncoupling membrane for tile installation over OSB. This movement is what causes the tiles and grout to crack. Either will work to anchor the foam pan. say that I expect to be a life-long subscriber." This seems to contradict what I have read but ok. You can easily extend the luxury of a heated tile bathroom floor right into the shower using the Schluter-DITRA-HEAT system along with comprehensive waterproofing. Made of polyethylene, DITRA also serves as a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB. We can give it a more generic title any time you'd like. Higher latex content is essential for bonding to plywood. Not so good side to side. A quality unmodified thinset should be used and mixed with a latex additive. Finally getting ready to finish my shower project. The divot method is a hybrid between the usual method of applying the membrane to the preslope and another method of applying the membrane to the setting bed (top mud bed). I have two pieces of marble that will need to be cut to create a shower curb cap (2-42" pieces to join to fill a 60" curb). or glitter, etc.). I need to run to lowes today anyways. I will be using Ditraset to install the kerdi on the walls and to set the tiles. With the KERDI-SHOWER-TT thin shower tray on a wood subfloor, you can build up the rest of the bathroom floor by installing either a 5/8" or 3/4" plywood/OSB panel on top of the wood subfloor along with DITRA or another Schluter-Systems uncoupling membrane. KERDI-DRAIN features an integrated bonding flange to which the KERDI waterproofing membrane is adhered and forms a waterproof connection at the top of the tile assembly. There are two methods to seal KERDI to a bathtub. Good idea to dampen the OSB before you apply the leveler. KERDI and KERDI-DS are pliable, sheet-applied, bonded waterproof membranes and vapor retarders with limited crack-bridging capabilities. Uncoupling membrane prevents cracked tile and grout. Higher latex content is essential for bonding to plywood. In jobsite conditions and over a long time, who knows. Air bubbles must be avoided. Have you looked over the Ditra website? How Do I Get Rid Of Green Mold In My Lawn? Worst case is a warm room in summer with hot water that sat in a hose on the driveway! Since KERDI is impervious, it does not deprive the mortar of its moisture. No matter how firm the subfloor; the plywood will expand and contract at a different rate as the tile, causing cracks to develop in the grout lines or tiles over time. Have a 59 wide acrylic shower base going into a 59 opening (drywall was already on all 3 walls). Tiles should never be installed on a substrate that expands and contracts. Send us an email: , construction-most-common-waterproofing-mistakes, Using a Prefabricated Shower Tray and Ramp, SchluterKERDI was evaluated by ICC-ES - ESR-2467, Schluter-DITRA was evaluated by ICC-ES - ESR-2467, Schluter-KERDI is listed by ICC-ES - PMG-1204, Schluter-KERDI-DS is listed by ICC-ES - PMG-1204, Schluter-KERDI-DRAIN is listed by ICC-ES - PMG-1204, Schluter Systems holds a Los Angeles Research Report (LARR) for Kerdi - File M-100022, Schluter Systems holds a Los Angeles Research Report (LARR) for Kerdi-Drain - File M-100023, Sheet-appliedpolyethylene waterproofing membrane and vapor retarder, Eliminates water damage which can lead to mold and mildew, Features a modified polyethylene (PEVA) core with non-woven polypropyleneon both sides, Features an anchoring fleece on both sides to anchor the membrane in thin-set mortar, Ideal for waterproofing in conjunction with tiled surfaces on walls and floors, KERDI is 8-mil-thick and guarantees uniform thickness, The 6 7 (2-meter) wide roll covers wall area from floor to standard shower head height for fewer seams and a faster installation. Will OSB Suck Moisture from the Mortar Used to Install DITRA? Yes. Leveler I would be tempted to use as s is. There are different types of OSB, from OSB1 to OSB3. DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. What material is used behind shower walls? Henry products in general are usually fine. New posts are no longer possible, but the collected work of building professionals sharing information remains available here as a resource to the JLC community. Thanks! I understand that to be a requirement for the foam trays. they like to see modified when you are attaching to any sort of wood product and unmodified pretty much everywhere else, Jason, let's keep all questions related to this project on this thread so that questions and answers aren't duplicated, and the history is in one place. Almost like a hydraulic cement. Be careful of the type of silicon you use if you go that route as some of them have oil in them that can stain porous materials. Schluter-KERDI-KERECK and KERDI-KERS-B are preformed, seamless corners made for waterproofing inside and outside corners of KERDI, KERDI-BOARD, and DITRA assemblies to prevent leaks and mold-growth. Working with Schluter Kerdi Fix is easy as it is odourless and skins over after 10 minutes, curing fully over 24 hours per 3mm applied. "I am the master of my fate, I am the captain of my soul." Thats because the thinset, once applied, cures very quickly. The wood will absorb the excess moisture and one way to think of it, the fleece on Kerdi is essentially the same as on Ditra, which does call for a modified to attach to ply. However if installed on drywall it is only protecting one side. residential bathroom installations designed for foot traffic. The classically-inspired KERDI-DRAIN is offered in a variety of grate finishes and accommodates a wide range of tile thicknesses. Can I install Kerdi membrane over Hardibacker? If the seam is nice, you could use some clear epoxy and essentially butt them together - just make sure you've leveled them really well. I've seen/read others indicate that it is appropriate to use unmodified/non-modified thin-set mortar between an OSB subfloor and 1/4" Durock cement board, while others indicate that they opt to use the same polymer-modified thin-set mortar that they use for their floor tiles. You can use a vacuum for that job. 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. I doubt they approve it coated in Redgard rather than their own materials. This means: A minimum of 5/8 nominal plywood or OSB thickness installed over joists on 16 centers. 173 and followed their instructions, laying down 3/4 OSB down and Prefabricated shower tray: Schluter-KERDI-SHOWER-T/-TS/-TT, 3.
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