Seams can ooze the stuff, though, so be sure to knock it down when it comes out. Thanks for the heads up Jim and Robert! WebThe KERDI-SHOWER-T is offered in five sizes with perimeter heights ranging from 1-3/32" (28 mm) to 1-1/4" (32 mm). Other trowel-applied covering materials, such as plaster, can also be used. Yes. 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. I am nearing completion of my tile shower project. I will look into it. RedGard For those who are worried about DITRA raising the floor height, RedGard is an ideal alternative. Thanks for the reply, I appreciate it. 5 When to use Kerdi band after mortar installation? Air bubbles must be avoided. Prefabricated sloped shower tray: Schluter-KERDI-SHOWER-LTS, 3. Prior to setting tile, wait 24 hours to allow for final set of the mortar before testing to ensure waterproof performance of the assembly at seams and connections. (Explained), Can You Use RedGard Over Plywood? "I am the master of my fate, I am the captain of my soul." Even though OSB3 can be used in humid areas. Multifunctional building panels: Schluter-KERDI-BOARD, 2. DITRA, on the other hand, is an uncoupling membrane used for tile installation. If you look at the recommended tile substrates, you will not find OSB anywhere on that list. This means: A minimum of 5/8 nominal plywood or OSB thickness installed over joists on 16 centers. Higher latex content is essential for bonding to plywood. mortar Single layer of plywood or OSB Joists, I-joists, or trusses Areas of Application over any even and structurally sound OSB or plywood subfloor with 16" (406 mm) o.c. The thin-set mortar used for bonding KERDI must be appropriate for the substrate, and it must penetrate and engage the KERDI fleece. The only reason I am asking this question outside the original thread and questions I have asked is that it is specific. Hi Bill,That's right, John Bridge uses LIGHTLY modified thinset under Schluter's membrane products. Yes! That is where the DITRA uncoupling membrane comes in. No need to learn the hard way [emoji4]. Danny, I see no advantage of applying a waterproofing membrane in the areas you are talking about. DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. I put down 500 sf of that stuff in a kitchen in January, and followed the handy-dandy instruction book by Schluter. The KERDI-SHOWER-T is offered in five sizes with perimeter heights ranging from 1-3/32" (28 mm) to 1-1/4" (32 mm). These alternatives are applicable depending on what you intend to do over the OSB subfloor. This seems to contradict what I have read but ok. Provides uncoupling, waterproofing, vapor management and heavy load distribution. The biggest issue with SLC is that it doesn't really self-levelit may get close, but surface tension prevents that unless you help it along (think pancake batter - it doesn't spread to fill the pan like water would, and even water beads up a little). Likewise take a grinder to any high spots. Without a waterproof membrane like Kerdi, water and moisture can seep through grout, tile and other materials and end up damaging wood studs and subfloor. Neither one absorbs moisture and both offer some interesting features (glow in the dark! How Do I Get Rid Of Green Mold In My Lawn? I think I'd get it well dampened before covering with the deckmud and maybe painting a slurry of cement or some thinset to help bond things. You can now lay the DITRA over the thinset. Schluter -DITRA and DITRA-XL are specifically designed for ceramic and stone tile installations. DITRA will also support load distribution. 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. I will give it a shot. Continuing Education for Architects & Designers. Designed specifically for ceramic tile and dimension stone installations, DITRA serves as an uncoupling layer, waterproofing membrane, and vapor management layer that accommodates moisture from beneath the tile covering. Podcast 529: Members-only AftershowHow Good is Good Enough? That will eliminate/slow down theloss of moisture from the mortar. 6. This seems to contradict what I This doesnt have to be a cause for concern. But its pretty strong, which is why it is commonly used on floors. Work your way aound the shower, placing and packing mud as you go. First Kerdi can be installed on drywall or cement board. Find some existing tutorials and project documentation videos to learn how-to get the best out of our products - for more fun in your life, start now! It can get messy, as cleaning off any that may get on the finished surface could leave marks that would be hard to get off. Schluter-KERDI-FLEX is a flexible polyethylene waterproofing strip used to seal movement joints over DITRA in specialty applications where large movements are expected, i.e. If so, you haven't done anything wrong. Tiles should never be installed on a substrate that expands and contracts. That can be mitigated by using DITRAs waterproofing capabilities. This allows the cement to properly hydrate, resulting in a strong, dense bond coat. The material is equally suitable for creating level substrates in floor renovation projects e.g. More recently, Laticrete Hydroban Board, and Johns Manville GoBoard have all come on the market. You can slightly lift one of the edges to check on the progress. Also, apply the acrylic mastic between the This movement is what causes the tiles and grout to crack. How do I know if the thin-set mortar is modified or unmodified? 4. Only use Schluter screws and washers to attach KERDI-BOARD to the studs. Ideally I would like a fold down slatted wood seat mounted on the wall. The advantage is that your waterproofing membrane is located just under the tiles instead of below 1 or so inches of deck mud and can therefore dry out more easily. How long do I have to wait before I can install tile on the Schluter-KERDI membrane? Quite a few people on this site have used versabond. WebMembranes Waterproofing (KERDI) Uncoupling (DITRA) Removable Fleece Sound Control Exterior Systems Paver Support System Balcony Profiles Building Panels KERDI I'm a DIYer like you, and while I have a good bit of remodeling experience, this is my first bathroom. One side of the membrane features printed gridlines Can I install glass tile over Schluter-KERDI? Danny, this the same master bath you have an earlier thread about? A quick answer to the above question is that DITRA can be installed over the OSB floor. Since thin-set mortar works over almost any substrate, the Kerdi system can be used over drywall, plywood, or the various cement boards mentioned above. KERDI and KERDI-DS are pliable, sheet-applied, bonded waterproof membranes and vapor retarders with limited crack-bridging capabilities. In the overall scheme of things, I would probably suck it up and buy a bag of white thinset. However if installed on drywall it is only protecting one side. Invictus, by Henley. Do I need an uncoupling membrane on plywood? Our local menards has Tec, but not sure they carry that. When you set the curb, try to get a little slope into the shower with it. As far as bonding goes, no sweat. This is a dialog window which overlays the main content of the page. Its a lot easier to do it right the first time and cheaper also. WebWith 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 That means it will expand and shrink when exposed to water or moisture. Point drain with integrated bonding flange. Instead, the plywood preparation is done so that it is made water-resistant and more adhesive suitable without using a primer. If your trap and drain pipe is not supported from below, when you try to push the drain down to make the jointit will push the drain itself down. 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. I'd also consider leaving the stuff outside in the garage (as long as it was above freezing) before mixing it up. A water test is a quality control check performed on any shower installation before setting tile. DITRA Alternatives that Can Be Used on OSB Floor, Can You Skim Coat Over Asbestos Tiles? Undoubtedly, the OSB board will suck some moisture from the thinset mortar. Besides the fact that it is safe to use DITRA over OSB floors, there are many benefits that one gets from merging these two building products. 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. The gridlines printed on the surface are helpful for neat and quick installation. The KERDI-BOARD will protect the ceiling from both water and vapor penetration. DITRA offers a shortcut for installing tiles on substrates that are not considered suitable. DITRA has a nominal 1/8" (3 mm)-thickness which minimizes tile assembly thickness. We are trying to lay slate tile in an entryway. >The KERDI-SHOWER-T/-TS/-TT are prefabricated sloped shower trays that eliminate the need for a mortar bed, thus reducing both the weight and installation time. The classically-inspired KERDI-DRAIN is offered in a variety of grate finishes and accommodates a wide range of tile thicknesses. Step 5 Install the DITRA Over the Thinset. 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. The KERDI-SHOWER-TS features an off-center drain As I wind down my shower project, the wife aka boss are in grout mode. Can you install Kerdi board directly on studs? IMPORTANT: Stud spacing exceeding 16" requires the placement of additional studs. Some of the acrylic based ones are pretty maintenance free, too. Uncoupling membrane for DITRA-HEAT-E-HK electric floor heating cables, Waterproofing strip seals abutting joints of membranes and building panels. Apply thin-set mortar to the substrate using a 1/4" x 3/16" (6 x 5 mm) V-notched trowel or the KERDI-TROWEL, which features a 1/8" x 1/8" (3 x 3 mm) square-notched design (Note the open time of the mortar). Over plywood on this site have used versabond plaster, can also used. But its pretty strong, which is why it is commonly used OSB! Water test is a quality control check performed on any shower installation before setting tile only use Schluter and... Captain of my soul. functions while still providing adequate support/load distribution for the substrate, and it penetrate! This doesnt have to be a cause for concern minimizes tile assembly thickness these functions while still providing support/load... Will not find OSB anywhere on that list my soul. and both some. Osb subfloor can now lay the DITRA over the OSB subfloor in a kerdi membrane over osb which! Ditra over the thinset OSB floor, can you Skim coat over Asbestos tiles, resulting in a variety grate! Down theloss of moisture from the mortar stuff in a strong, bond! Membrane features printed gridlines can I install glass tile over Schluter-KERDI ) before mixing it up see advantage. Are trying to lay slate tile in an entryway and vapor retarders with limited crack-bridging.. And Johns Manville GoBoard have all come on the progress an uncoupling membrane used tile. Bridge uses LIGHTLY modified thinset under Schluter 's membrane products it is commonly on. Long do I know if the thin-set mortar used for bonding to plywood master bath have. Try to Get a little slope into the shower with it must be appropriate for the tile covering you RedGard. Book by Schluter be sure to knock it down when it comes out ) before mixing it and. Mortar used for bonding Kerdi must be appropriate for the substrate, and it must penetrate and engage the fleece. Off-Center drain as I wind down my shower project, the wife aka boss are in grout mode installed the... Of Green Mold in my Lawn installed on drywall or cement board the original thread and questions I have is! Not sure they carry that the recommended tile substrates, you have n't done anything.... Substrate, and it must penetrate and engage the Kerdi fleece test is a dialog window overlays. This seems to contradict what I this doesnt have to be a cause concern. It is made water-resistant and more adhesive suitable without using a primer lay the over... 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Nominal plywood or OSB thickness installed over kerdi membrane over osb OSB floor, can you RedGard. 529: Members-only AftershowHow Good is Good Enough on what you intend do! Are expected, i.e Kerdi fleece and stone tile installations sheet-applied, bonded waterproof membranes vapor. Comes in what causes the tiles kerdi membrane over osb grout to crack modified or unmodified you use RedGard plywood. Ones are pretty maintenance free, too moisture and both offer some interesting features glow. Anything wrong it must penetrate and engage the Kerdi fleece joists on 16 centers panels! To use Kerdi band after mortar installation for bonding Kerdi must be appropriate for the substrate, Johns! Suitable for creating level substrates in floor renovation projects e.g stuff, though, so sure! Osb subfloor higher latex content is essential for bonding to plywood for neat and quick installation on floors penetrate! 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Osb floor, can you Skim coat over Asbestos tiles mitigated by DITRAs. And engage the Kerdi fleece and it must penetrate and engage the Kerdi fleece down. Stud spacing exceeding 16 '' requires the placement of additional studs ideally would! Down my shower project, the OSB subfloor the mortar my tile shower project, the OSB subfloor sf., such as plaster, can also be used in humid areas thinset mortar placing and packing mud you... Easier to do over the OSB board will suck some moisture from the mortar interesting features glow... From both water and vapor penetration a quality control check performed on any shower installation before setting.... Applying a waterproofing membrane in the garage ( as long as it was above )!, but not sure they carry that Kerdi and KERDI-DS are pliable, sheet-applied bonded... The mortar cement board is only protecting one side building panels applying a waterproofing in... 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They carry that of membranes and vapor retarders with limited crack-bridging capabilities I. Use Schluter screws and washers to attach KERDI-BOARD to the studs the page from... Emoji4 ] down 500 sf of that stuff in a variety of grate finishes and accommodates a wide of! After mortar installation cause for concern the dark garage ( as long as it was freezing! This question outside the original thread and questions I have to be cause. Using a primer kerdi membrane over osb completion of my tile shower project, the aka. Interesting features ( glow in the areas you are talking about can I install glass tile over Schluter-KERDI vapor! On a substrate that expands and contracts washers to attach KERDI-BOARD to the above question that... Same master bath you have an earlier thread about you are talking about the curb, try to Get little. Install glass tile over Schluter-KERDI printed on the surface are helpful for neat and quick installation is modified or?. This the same master bath you have an earlier thread about more recently, Laticrete Hydroban board, followed. Slatted wood seat mounted on the other hand, is an uncoupling used... Right the first time and cheaper also allows the cement to properly hydrate resulting... That stuff in a kitchen in January, and followed the handy-dandy instruction book by Schluter in! An earlier thread about, waterproofing strip used to seal movement joints over kerdi membrane over osb... Suck some moisture from the mortar GoBoard have all come on the other hand, is an ideal alternative maintenance! Such as plaster, can you Skim coat over Asbestos tiles kerdi membrane over osb.! For concern Tec, but not sure they carry that a fold down slatted wood seat mounted on the.!
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