ditra over osb subfloor
You need to use the polymer additive when going over plywood. Ditra is 1/8″ thick, and can be installed on single layer plywood or OSB subfloors that are over joists spaced up to 19.2″ on center. Make sure you repeat this process on each side, not just where your cuts were made. Can I tile over OSB You can lay tile over an OSB subfloor, but a membrane should be installed between the subfloor and the tiles to ensure a bond between the tile and the floor is made. Ditra 19.2" (488 mm) o.c. Again, I've tiled over Ditra with modified thinsets, but I'd not recommend doing that with large format. I would imagine that Ditra would be the same. 11 is used. Make sure you repeat this process on each side, not just where your cuts were made. over any even and structurally sound OSB or plywood subfloor with 19.2" (488 mm) o.c. The product comes in a roll, so it was a lot easier to deal with in a small space than trying lay a plywood subfloor. Leave a 1/4″ gap between walls and the bathtub. 3/4" OSB has way too much deflection for a tile substrate. Check out our in-depth guide to Schulter Ditra. I have not personally done this, but Schluter says you can. Correspondingly, which thinset to use with Ditra? Floors. How long should Ditra dry before tiling? DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2″ (488 mm) o.c. Simply running the trowel over the ditra did that (photos 1 and 2). It’s also a waterproofing layer. A decoupler is designed primarily for lateral movement, where your OSB movement (flex) will be vertical. Backer board offers no addition to structural integrity... it only serves as something to stick the tile to. Embed the fleece side of the DITRA in the thin-set. Schulter expressly notes that Ditra replaces that second layer of plywood. It is made of polyethylene creating a waterproofing layer protecting the substrate. 24" (610 mm) o.c. DITRA allows for ceramic tile applications over single-layer plywood or OSB subfloors on joists spaced up to 19.2 o.c. Ditra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. This polyethylene membrane is an excellent moisture and vapor barrier too, and it can be installed over wood or concrete including floors with radiant heat. I’m adding 2×10 blocking in at least 2 rows. 08-19-2006, 05:34 AM. Ditra-XL is 5/16 in. Ditra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. 4. Measure the floor dimensions and cut your DITRA.You can cut DITRA with a utility knife. If using natural stone, you need more plywood. Ditra can be installed over a variety of subfloors including concrete, plywood, … Transit Estimates - Ground/Freight I can tell you that the modified thinset had set up quite well after a couple of days. A tight, unmoving bond between mortar and subfloor causes cracking. Ditra XL is 5/16" thick, and can be installed on single layer plywood or OSB subfloors that are over joists spaced up to 24" on center. Ditra is 1/8" thick, and can be installed on single layer plywood or OSB subfloors that are over joists spaced up to 19.2" on center. I've never used OSB under Ditra but I would not hesitate. (49 cm) oc wood framed floors. It is recommended to use battens or single-layer underlayment. However, we put it down over OSB subfloor and used a very slightly modified thinset both above and below the ditra. Linolium is usually attached on top of 1/4" underlayment. The slightly modified is good for the OSB install (since it permits the air necessary for it to dry), but invalidates the warranty if you do it … I am tiling my entry way soon. DITRA enables ceramic floor tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2 ″ (488 mm) o.c. Ditra should be set with thinset using a 1/8″ trowel. It is made of polyethylene creating a waterproofing layer protecting the substrate. DITRA-HEAT or DITRA-HEAT-TB uncoupling membrane and heating cables Latex p.c. So heres my suggestion. DITRA is an underlayment that allows for movement and expansion/contraction while preventing the transfer of stress that commonly cracks grout and tile. joist spacing interior dry or wet areas Limitations minimum 2" x 2" (50 mm x 50 mm) tile It provides uncoupling to prevent cracked tile and grout. 16" (406 mm) o.c. Anyway, sticking tile to OSB isn't a problem.. To set DITRA over concrete or gypsum, Schluter-Systems recommends an unmodified thin-set mortar meeting the requirements of ANSI A118. This allows tile mortar, which bonds to the tile, to anchor within the cavity when it hardens. Both 1/4- and1/2-inch cement board are appropriate for floors. DITRA is 1/8' (3 mm) thick, which minimizes tile assembly thickness and reduces transitions to lower surface coverings (e.g., carpet, engineered wood, and vinyl). Photo 3. Ditra itself is bonded to the OSB/plywood subfloor with thinset as well. Ditra is 1/8" thick, and can be installed on single layer plywood or OSB subfloors that are over joists spaced up to 19.2" on center. Most common tile floor underlayments are 1/4″ thick, so Ditra is a great alternative if a shorter underlayment is needed. There is no way you can safely tile directly over OSB. However, we put it down over OSB subfloor and used a very slightly modified thinset both above and below the ditra. Difference between OSB used for sheathing and the OSB used for subfloors. While Ditra over cement board doesn’t make logical sense in most scenarios, there are some reasons you might want to go ahead and do both. If the OSB and the T&G is the subfloor and 3/4" plywood is going over the top I think you are ok. My house has planks for a subfloor and my contractor put 3/4" plywood over it and Nobleseal TS as a decoupling/crack resistance membrane. 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 know using concrete backer or ditra membrane is the way to go b ut I can't deal with the hight issue. Use a rubber grout float to push the DITRA into the thin-set. Wood Underlayment In some applications, adding a layer of plywood or OSB before installing DITRA-HEAT or DITRA-HEAT-DUO and the ceramic or stone tile covering is required to reduce deflection and curvature of the sheathing between the joists. It can also be installed over the Amdry Insulated Subfloor system, so if you wanted to have tile in your basement, there's a safe way to do it. Schluter says on hteir website that OSB is a suitable subfloor for Ditra. The Hardie specs say "For all floors: Use minimum 5/8" exterior grade plywood or 23/32" exterior grade OSB, complying with local building codes and ANSI A108.11. Using green joists. Both 1/4- and1/2-inch cement board are appropriate for floors. Ditra-XL is an uncoupling membrane designed for ceramic and stone tile installations on floors. Once the RedGard® is dry, tile can be safely installed to the RedGard®-coated OSB with one of CuSTOM®'s polymer-modified thin-set or medium bed mortars. “Tile and grout work loose if the underlayment flexes. Yes I was being a bit rhetorical, My point was while OSB has gotten plenty strong it's instability still eliminates it from most systems unless ditra or similar is added. In such cases, a Ditra membrane can be used as a barrier. joist spacing with double-layer OSB or plywood subfloor for ceramic and porcelain tile installation 2. Know the joist spacing of your home before installing DITRA.Here’s the basic rundown of how to use DITRA for ceramic or porcelain tile:16... Joists’ spacing not to exceed a maximum of 19.2" on center." joist spacing interior dry or wet areas Limitations minimum 2" x 2" (50 mm x 50 mm) tile for natural stone, see detail DH-W-S (page 6) Then use a powdered adhesive. After about 24 hours, it’ll be ready for tile, and meanwhile Jim and Rich are getting started on the over half. Pro: not pulling the plywood up; cons: I’m not sure leveling this way on top of the subfloor is a good practice. 2) Tile the bath room floor as is, building up the level in the center with cementboard in the center and feathering to the sides with mortar before laying Ditra over top for the tiles. 19.2 inch on-center joist spacing with single layer OSB or plywood subfloors. Improper spacing. Because DITRA is invulnerable, it does not deny the mortar of its dampness. DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2' (488 mm) o.c. DITRA-XL • Allows for ceramic tile application over single layer plywood/OSB subfloors on joists spaced at 24" (610 mm) o.c. VIDEO. Mapei large format floor tile mortar over ditra. 1. Tile floors…there’s no doubt they make homes look nicer.But what’s not so awesome are broken tiles.This is a HUGE issue if yo... In cases where OSB is to be used as an underlayment on interior floor installation, it must be properly treated before the installation of tile. So stiking porcs to ditra witch make up most floor tiles cant be guarenteed by dirta if i am understanding this right. or do I have any other option? We used Ditra in our guest bathroom and also added a layer of kerdi at the seams to make it completely waterproof (in the event there’s ever a large leak the bathroom becomes a small pan that holds the water). Ok here is the situation. The type of thin-set mortar used to install DITRA depends on the substrate material. I have a steel entry door, a steeel entry to the garage and a wooden closet door to deal with. At least flush enough. 8. Embed the fleece side of the DITRA in the thin-set.Leave a 1/4″ gap between walls and the bathtub. Use a rubber grout float to push the DI... Prova Flex can be installed over these wood subfloor systems: * 16" or 19.2" O.C. Just about to start a DIY Ditra Heat system bathroom install. I plan on placing 13” porcelain tile in my kitchen and hall. Most common tile floor underlayments are 1/4″ thick, so Ditra is a great alternative if a shorter underlayment is needed. To install cement board on floors, cement board manufacturers mandate a 5/8 … This will act as a link between the tiles and the OSB. It is made of polyethylene creating a waterproofing layer protecting the substrate. Soak the tip of your paintbrush in your sealer and begin brushing it over the surface and on the ends of the OSB pieces. DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2' (488 mm) o.c. thick which allows for even transitions between tile and 3/4 in. Tel: 1-800-472-4588, Fax: 1-800-477-9783. For example, to set DITRA over plywood or OSB, a modified thin-set mortar meeting the requirements of ANSI A118. joist spacing interior dry or wet areas Limitations minimum 2" x 2" (50 mm x 50 mm) tile (on center) joist spacing with single-layer OSB or plywood subfloor for ceramic and porcelain tile setup * 24" O.C. Thinset mortar. I have 3/4 t&g osb as a subfloor with 2x10 16 OC as floor joists. Correspondingly, which thinset to use with Ditra? I redgarded over my entire bathroom subfloor. Construction is ¾ T&G OSB (unknown Exposure Rating) over wood I Beams (I Beams are 12 inches wide (deep?) Since your tile isn’t considered large format tile i would just use the 253 for everything. Cut the Ditra to size first then roll it back up and put it aside. joist spacing, single layer OSB or plywood subfloor Areas of Application over any even and structurally sound OSB or plywood subfloor with 16" (406 mm) o.c. Column-like mortar structures are formed in the cutback cavities of the matting. This ensures that Ditra will adequately bond to the sub-floor and adheres to the warranty policy. One thing you’ll need to pay attention to is using the proper type of thinset mortar: For installing the Ditra membrane: over … How do you seal OSB subfloor? jim VanBergen says. 11 is used. Unless you mean cbu over ditra, which I … I installed it over my OSB subfloor in a bathroom. Schluter-Systems Technical Support, United States. DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2" (488 mm) o.c. Our bathroom had hardwood flooring, and you can’t lay Ditra directly on top because solid wood shrinks and swells with temperature and humidity changes. it was my first tile job, and i cannot say more good things about it. I have no idea though about what side up. One thing you’ll need to pay attention to is using the proper type of thinset mortar: For installing the Ditra membrane: over … double layer wood floor consisting of: DITRA-HEAT or DITRA-HEAT-TB uncoupling membrane and heating cables Latex p.c. It's too thin to offer any shear resistance between adjacent materials. Roll the Ditra in place and use a trowel or a piece of plywood to push the Ditra into the thinset. Tongue-and-groove edges on many premium floor panels, such as Weyerhaeuser’s Edge Gold ® OSB panels, are designed to self-gap. The article says they used Latex modified mortar between the OSB and Ditra. It provides uncoupling to prevent cracked tile and grout. 9. Lift up a corner of the DITRA to check for thin-set coverage.Your goal should be 100% coverage…we had a few bare spots here and fixed tha... To set DITRA over concrete or gypsum, Schluter-Systems recommends an unmodified thin-set mortar meeting the requirements of ANSI A118.1. DITRA is 1/8' (3 mm) thick, which minimizes tile assembly thickness and reduces transitions to lower surface coverings (e.g., carpet, engineered wood, and vinyl). i wanted to share that i used the schluter ditra membrane that was discussed in some of these posts. At least flush enough. jim VanBergen says. We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues. In addition, DITRA-XL and standard 5/16” tile creates a floor height that is level with standard 3/4″ hardwood flooring. 5. Dry fit the DITRA on your wood subfloor. Plywood and Oriented Strand Board (OSB) Plywood and OSB can be used as backing materials for Schlüter®-DITRA on both floors and walls. 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. I mixed the thinset more "runny" than if installing tile (per Schluter recommendations). Ditra XL is 5/16" thick, and can be installed on single layer plywood or OSB subfloors that are over joists spaced up to 24" on center. All good things! Ditra can be installed over a variety of subfloors including concrete, plywood, … Just like plywood there are differing grades of OSB. Coat the pieces as they lay on the tarp, and then let the waterproofing sit to dry for 12 to 14 hours. The minimum subfloor specified is 5/8" exterior grade plywood or 23/32'' exterior grade OSB subflooring. over any even and structurally sound OSB or plywood subfloor with 19.2" (488 mm) o.c. Then spread the thinset in a (39.5)" row (width of Ditra). To install cement board on floors, cement board manufacturers mandate a 5/8 … Plywood and OSB are the two most common materials used for floor decking, and typically they are 5/8″ or 3/4″ thick. Does the L/360 minimum a have some built-in “cushion” in it? Sub-floor is 3/4″ osb/t&g, glued and stapled. over any even and structurally sound OSB or plywood subfloor with 19.2" (488 mm) o.c. joist spacing, double layer OSB or plywood subfloor Areas of Application over any even and structurally sound double Interior dry or wet areas Limitations minimum 2" x 2"(50 mm x 50 mm)tile Requirements maximum spacing of I-joists or floor trusses is 24" (610 mm) o.c. My subfloor consists of a lower layer of 3/4″ exterior T & G plywood covered by a 3/4″ layer of T & G Advantec which is a high density type of OSB. Lift up a corner of the DITRA to check for thin-set coverage. interior dry or wet areas Limitations minimum 2" x 2" (50 mm x 50 mm) tile for natural stone, see detail D-W-S (page 6) and natural stone discussion (page 24) Requirements maximum spacing of joists, I-joists, or floor trusses is 19.2" (488 mm) o.c. Advantech may be better than OSB but glue sticks to plywood the best and plywood conforms to your joists better over time after glued/screwed. Ditra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. It is 3/4" thick as opposed to 1/2" thick and is superior in strength to comparable subfloors. It is made of polyethylene creating a waterproofing layer protecting the substrate. Soak the tip of your paintbrush in your sealer and begin brushing it over the surface and on the ends of the OSB pieces. Ditra is a polyethylene uncoupling underlayment with a grid Ditra is an uncoupling membrane designed for ceramic and stone tile installations on floors. First that subfloor should be packed with insulation. By the way, if you find that you need to keep the 1/2 inch plywood underlayment I recommend going over it … Ditra is 1/8" thick, and can be installed on single layer plywood or OSB subfloors that are over joists spaced up to 19.2" on center. Biggest mistake most make (and the reason tiles often don't stick well) is not cleaning the OSB/plywood first and wetting it when laying the tile on it. Call Schluter, they have some good technical people that will answer your questions. The DITRA membrane, which is 1/8” thick, prevents the mortar from bonding to the subfloor. If you have a plywood sub-floor I'd guess that you'll remove a ply or two in various places when trying to remove the Ditra later on. Ditra is an uncoupling membrane designed for ceramic and stone tile installations on floors. Ditra performs multiple . August 10, 2020 at 8:41 am. weekendbuilder | Posted in General Discussion on April 25, 2007 11:32am. Sturdy floor, or advantech in a different animal than traditional OSB sheathing. Uncoupling Tile has been successfully installed for thousands of years by incorporating an uncoupling layer, or forgiving shear interface, within the tile assembly. Ditra is a polyethylene uncoupling underlayment with a grid Ditra is an uncoupling membrane designed for ceramic and stone tile installations on floors. DH-W16-T-19 16" (406 mm) o.c. To avoid buckling, subfloor panels should be spaced with a 1/8-inch gap at all edges and ends to provide room for naturally occurring expansion.
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