Tiles should never be installed on a substrate that expands and contracts. What Does It Mean When A Guy Spreads His Legs In Front Of You? KERDI-BOARD is one of my favorite waterproofing boards because it's light, easy to cut and has lines on it for aligning the screws. All KERDI components and tiles must be installed using an unmodified thin-set mortar meeting ANSI A118. Using KERDI-BOARD to build walls over stud framing in wet areas is an efficient alternative to using gypsum board. However if installed on drywall it is only protecting one side. Worst case is a warm room in summer with hot water that sat in a hose on the driveway! Kerdi200/20M covers 215 sq. Good idea to dampen the OSB before you apply the leveler. Higher latex content is essential for bonding to plywood. I will be using Ditraset to install the kerdi on the walls and to set the tiles. say that I expect to be a life-long subscriber." Multifunctional building panels: Schluter-KERDI-BOARD, 4. 5. Silicone or sand caulk in the corners since its a change of plain. IOW, you have to be fast. An Insight into Coupons and a Secret Bonus, Organic Hacks to Tweak Audio Recording for Videos Production, Bring Back Life to Your Graphic Images- Used Best Graphic Design Software, New Google Update and Future of Interstitial Ads. ;). Does Schluter-KERDI waterproofing membrane have a front/back to it? It takes a little longer than the traditional mud shower bed and water-proofing methods, but it is worth it. Mark the slope or high point on the walls. It's important to note that latex-modified thinset can still be used between the membrane and the subfloor because it is not impervious. Its now time to get messy. KERDI was developed as a waterproofing membrane to be used in conjunction with ceramic and stone tile coverings. Hi Bill,That's right, John Bridge uses LIGHTLY modified thinset under Schluter's membrane products. 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. Both (actually, all three) methods will produce a workable shower, if done properly. This allows the cement to properly hydrate, resulting in ft. and is ideal for waterproofing tiled tub surrounds and showers. Your saving a lot of money by doing it yourself instead of hiring it done. Its relatively thin. :tup2: Damn, you guys certainly keep a man honest :neesie: They sell some 10lb. Was in a similar situation as you and ended up with TEC uncoupling from Lowes for about $15/bag. How long does Kerdi have to dry? the modified cured differently (or was it the unmodified?) The gridlines printed on the surface are helpful for neat and quick installation. 1 Can you put Kerdi membrane over plywood? For complete installation guidelines and warranty criteria for KERDI in showers, steam showers, and bathtub surrounds or KERDI-DS in steam rooms , please download the Schluter- Systems Shower System Installation Handbook and view the installation videos available below. or OSB Joists, I-joists, or trusses Ceramic or porcelain tile Unmodified thin-set mortar DITRA-HEAT or DITRA-HEAT-TB uncoupling membrane and heating cables Latex p.c. Waterproofing strip seals abutting joints of membranes and building panels, Waterproof, multifunctional tile substrate and building panel, Point drain with integrated bonding flange, Bonded waterproofing and vapor-retardant membrane, Single-component sealing and bonding compound, Contact us: 888-472-4588 The material is equally suitable for creating level substrates in floor renovation projects e.g. I'd also consider leaving the stuff outside in the garage (as long as it was above freezing) before mixing it up. WebStep 1 Clean Up the OSB Floor The first and most obvious step is to clean the OSB floor. would tiles start falling off the wall !!) Furthermore, the maximum on-center spacing for the screws and washers is 12 inches. Install over a wide range of substrates, including plywood/OSB, concrete, gypsum, heated floors, etc. Once you get your pics to about 600 pixels high by 400 wide, they'll upload in a snap. Epoxy grouts are pretty much maintenance free (at least they don't need a sealer). Although some substrates absolutely require uncoupling membranes, they can be installed on a range of surfaces, including cement mortar, backerboard, OSB, and plywood. That would be ideal for me right now. First Kerdi can be installed on drywall or cement board. Continuing Education for Architects & Designers. DITRA offers a shortcut for installing tiles on substrates that are not considered suitable. Therefore, do not be surprised when you find this material used as the subfloor of your home. 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. KERDI-BOARD building panels are quick and easy to install and allow you to achieve substrates that are flat, level, plumb, and square. Yes. When discussing the steps of installing DITRA over OSB, we mentioned that you should mix up the thinset so that its not too thick or thin. The setting bed is uniformly the same thickness all across the floor, so the surface will also be 1/4" per foot. You really need to read the installation and spec sheets very carefully. DITRA-HEAT-DUO features an integrated bonding fleece that provides sound control, as well as a thermal break. 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. Thinset is the wet base that you first trowel on the plywood to make the tile stick. Acrylic is the best system to use for shower walls because it is the safest, least high maintenance, and easy to install, meaning your shower could be done in as little as one day. Waterproofing strip: Schluter-KERDI-BAND, 6. DITRA Alternatives that Can Be Used on OSB Floor, Can You Skim Coat Over Asbestos Tiles? and be done with it. As I wind down my shower project, the wife aka boss are in grout mode. Instead, the plywood preparation is done so that it is made water-resistant and more adhesive suitable without using a primer. The simple answer is yes. Is Kerdi band necessary? Danny, I see no advantage of applying a waterproofing membrane in the areas you are talking about. Leveler I would be tempted to use as s is. It really is pretty easy. The thinset will help bond the DITRA to the OSB. Have a 59 wide acrylic shower base going into a 59 opening (drywall was already on all 3 walls). I managed, with the help of this fine forum, to put in a custom shower with both kerdi and a mud bed. Jim and Robert (and others) thanks so much for your help and advice. If you cannot or do not wish to recess the floor or use a ramp, the use of additional materials to raise the bathroom floor is another option. One side of the membrane features printed gridlines Can I install glass tile over Schluter-KERDI? Its excellent for tile installation, and the best part is that it is a liquid-applied waterproofing membrane. Latex-modified mortars must dry for the polymers to coalesce and form a hard Why should I use the Schluter-Shower System? You should be good to go anytime now. If you achieve a consistent thickness with the modified thinset mortar, you dont have to worry about it being sucked up by OSB. I never had done drypack before and it was pretty simple to do. The substrate must be clean, even, and load bearing. The seam in the middle I would think could be whichever you prefer. It can be used in areas not subject to direct water exposure (tub/shower surround), and areas of noncontinuous high humidity (bathrooms). Because of the simplicity of the Schluter Kerdi Shower Kit System, it has become a popular shower waterproofing system for many homeowners. To install Kerdi Membrane, start by applying Schulter ALL-SET mortar (or similar) to your cement board substrate using a 1/4 x 3/16 V-Notch Trowel. For showers and bathtub surrounds, KERDI must be carried to the height of the showerhead at minimum What size notched trowel should I use to install Schluter-KERDI? Calculate all your membrane requirements for your project. Don't fear the mud. . A-holes. Can you use KERDI membrane on plywood floor? Ditra is 1/8-in thick and is designed for ceramic and stone tile. As for the seams, they can be sealed with Kerdi Band. Yes. The type of bonding mortar used to apply KERDI must be suitable for the substrate and must penetrate and engage the membrane fleece What type of thin-set mortar should I use when installing ceramic and stone tile over Schluter-KERDI? Schluter says that the Kerdi membrane and tile can be installed over standard gypsum wall board without any problems. That means it will expand and shrink when exposed to water or moisture. WebI asked Schluter support about type of thinset under Kerdi shower tray to be installed over OSB. Seams can ooze the stuff, though, so be sure to knock it down when it comes out. 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. Use unmodified thin set to Higher latex content is essential for bonding to plywood. The time between liquid and starting to set can be quite abrupt. 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. Schluter -DITRA and DITRA-XL are specifically designed for ceramic and stone tile installations. Schluter-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. Ideally I would like a fold down slatted wood seat mounted on the wall. When to use Kerdi band after mortar installation? 3. Thanks! Then fill in the rest and slope it to the drain. What they allow and what they recommend are two different things. 3 Can I use unmodified thinset on plywood? In high moisture areas, you can imagine that it is very important to consider this water-resistant feature and functionality so that it will help your projects be more complete. Tiles were 12x12.Let's not confuse the issue with facts! KERDI and KERDI-DS are pliable, sheet-applied, bonded waterproof membranes and vapor retarders with limited crack-bridging capabilities. Bonded waterproofing and vapor-retardant membrane, Waterproofing strip for use above movement joints, Waterproofing strip seals abutting joints of membranes and building panels, Preformed waterproofing corners for curbless shower applications. Waterproofing Corners: Schluter-KERDI-KERECK, 1. Since KERDI is impervious, it does not deprive the mortar of its moisture. Is your existing OSB in the alcove dead level in both directions? Danny if youre worried about sweating the fittings. look into pex and compression rings if codes permit in your local. 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). First Kerdi can be installed on drywall or cement board. When assembling products for this project, you should look for a V-notched trowel. 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). Yes,Kerdi can be installed on drywall or cement board. So, heres my dilemma. Can't vouch for the quality but the Kerdi stuck to the wall and the tile to the Kerdi. Something which would consume a lot of time and money. Any specific type/brand to look for? Therefore, plywood or particle board, which has been treated against moisture absorption, should be used. They can dimple if you put point pressure on it. I should make that my tagline. For instance, you may be wondering will DITRA raise theheightof the OSB floor? Likewise take a grinder to any high spots. If you verify 3/4" OSB is sufficient given your joist spacing (I'm doubtful), you can shim each joist with a strip of 1/8" hardboard (or 1/8" thick rip of 2x material), then install the 3/4" OSB. This includes dirt and dust. Although some substrates absolutely require uncoupling membranes, they can be installed on a range of surfaces, including cement mortar, backerboard, OSB, and plywood. What about if you prime/seal the osb first. Invictus, by Henley. Great product. The Latest Innovations That Are Driving The Vehicle Industry Forward. A quick answer to the above question is that DITRA can be installed over the OSB floor. Then hang the sheet. Dam up any area you dont want/need the leveler to go into. If you must tape Schluter-KERDI over Solid Backing for Walls, Scott McGillivray on Waterproofing Principles using Schluter-Systems, How to Waterproof Connections to Fixed Building Elements. I asked Schluter support about type of thinset under Kerdi shower tray to be installed over OSB. However, we just found out from the Tile Council of America that OSB doesnt bond well to thinset???? Copyright 2022 Zonda Media, a Delaware Corporation. KERDI is ideal for use in tiled showers, bathtub surrounds, residential steam showers, and other tile applications in wet areas. I look at ceramic tile as a lifetime-of the house-product, so I use the best material for the job.I prefer to use cement board as the substrate with the Kerdi on top. 173 and followed their instructions, laying down 3/4 OSB down and The KERDI-SHOWER-TS features an off-center drain placement and is 1-1/2" (38 mm) high. Kerdi does admit that you can use cement board. or glitter, etc.). Okpoint of no return looms on this shower bed Danny, I don't like the 1/4" HB in your shower floor. DITRA will prevent OSB from water damage. This means: A minimum of 5/8 nominal plywood or OSB thickness installed over joists on 16 centers. I figured on 2 but had to pick up one more later, but my local tile shop has a wide variety of brands in stock. Because of the benefits mentioned above, DITRA is perfect for surfaces about to be tiled over. DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2" (488 mm) o.c. "I have learned so much thanks to the searchable articles on the FHB website.
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