• The mortar to install the KERDI waterproofing membrane and accessories must be fairly fluid in consistency, but still able to hold a notch. Using Laticrete 317 thinset and a 1/8 square notch trowel. Waterproof, multifunctional tile substrate and building panel. I can use Ditra over OSB board with spacing of joists up to 19" o.c. Using KERDI-BOARD to build walls over stud framing in wet areas is an efficient alternative to using gypsum board. What you use over the single layer of substrate will be determined by the product you want to apply OVER the substrate. I've only had tile come up/loose on one shower and it was a Kerdi floor over a preformed Schluter Styrofoam base. Ditra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. Also, can I use Ditra over plywood? Schluter®-KERDI is a pliable sheet-applied waterproofing membrane and vapor-retarder designed for the direct application of tile. Make sure to fully embed the KERDI-BAND and remove any excess mortar and air pockets. Replaces the need for cement board. The nominal 5/16” (8mm) thickness minimizes tile assembly thickness. But if you prefer to stiffen your walls with a layer of sheet goods prior to installig the Kerdi Board, I recommend plywood there instead of OSB for a couple of reasons. joists, use 5/8" (16 mm) minimum, exterior-grade plywood or OSB panel. if you want a small job you lay down a flooring that works with the floor you have. Follow the Wood Underlayment installation guidelines as found in the Schluter®-DITRA or Schluter®-DITRA-HEAT Installation Handbooks for fastening guidelines. Concrete Driveways: Poring Over the Pros and Cons, Insulation Basics: What to Know About Spray Foam, Remodeling Kitchen - Need backsplash ideas. Then your membrane, then your tile. Prepare yourself for the realities of training, cost and the impact that lovable pooch might have on your house, Up the chances a review board will approve your design with these time-tested strategies from an architect, Not allowed to paint and limited with nails, a design-minded couple uses furnishings and textiles to make their rooms stand out, Of course you've heard of it, but you might not know all the uses and benefits of this workhorse building material, If you find yourself fumbling through cupboards to find what you’re looking for, it’s time to take action with these simple steps, If you're itching to reduce allergy symptoms, this mini guide to reducing allergens around the house can help, Nail down these key details to ensure that everything works properly and you’re all set for the future, One side says re-create the past; the other wants unabashedly modern. Kerdi really offers very little advantage over hardiboard plus membrane. KERDI is bonded to the mortar bed or tray and the surface of the KERDI-DRAIN’s integrated bonding flange. A fully waterproof assembly is easily achieved by sealing seams and fastener penetrations with KERDI-BAND. You can use this same method where DITRA meets drywall. While there are thinsets that ‘say’ they will bond to linoleum (and some of them will) apparently the jackass who installed that particular floor was not aware of that. Prefabricated sloped shower trays for accommodating the KERDI-LINE linear drain. Check out the video for those details. KERDI-BOARD, a multifunctional waterproof building panel, gives you more control over your tile installation project by providing you with the means to simply and easily create ideal substrates for tile. Does this sound a as a good idea. Using a Prefabricated Shower Tray and Ramp, Continuing Education for Architects & Designers, 1. Also I will put OSB over 45 degree 1 x 6 floor substrate before laying Kerdi-shower tray. The membrane is subsequently cut to match the niche opening. joists, use 3/4" (19 mm) minimum, exterior-grade plywood or OSB panel. The anchoring fleece is embedded in thin-set mortar to provide a mechanical bond to the substrate. I had to take out a linoleum floor with 1/4" plywood underlayment that was gun-nailed with hundreds and hundreds of ring-shanks in each sheet - the installers had even shot-in stars and circles and spelled out their names with nails. Yes. Find the website that's made specifically for you. If that is the case, I am assuming Versabond is ok? Prefabricated shower tray: Schluter®-KERDI-SHOWER-T/-TS/-TT, 3. The result of Schluter-DITRA’s performance is a tile floor with outstanding durability and resistance to cracks and moisture. >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. Uncoupling and waterproofing membrane: Schluter®-DITRA, 5. DITRA has a nominal 1/8" (3 mm)-thickness which minimizes tile assembly thickness. OSB is HARD to add anything but carpet or a floating floor. The previous small-diamond-on-webbacking ceramic tile was installed directly over the hardwood over 30 years ago without any cracking. DITRA-HEAT features a thickness of 1/4" (5.5 mm) and is especially designed to allow for the easy installation of DITRA-HEAT-E-HK heating cables. b.Schluter ®-KERDI family of waterproofing products: apply a thin layer of the mortar with the flat side of the trowel to produce solid contact with the fleece. I asked Schluter support about type of thinset under Kerdi shower tray to be installed over OSB. Different options and thicknesses of DITRA membrane are available to best suit the needs of your project. Sold by the Square Foot. If you want hardwood (solid nail in place) you will want 3/4" smooth side up plywood. The 3/4" hardwood will add together with the 3/4" plywood = 1 1/2" = identical to your main house floor level. products and 1/4" x 3/16" V-notched trowel to install all KERDI membrane and KERDI-BAND products. We used a 5 inch wide KERDI-BAND because if it’s centered, your base molding will hide it. Figure out your FLOOR FIRST....and then use thick plywood to RAISE the height of your subfloor. Over a concrete subfloor use a bonded mortar bed of appropriate thickness to build up the rest of the bathroom floor. Multifunctional building panels: Schluter®-KERDI-BOARD, 4. Replacing the current sub floor is like way much work. The classically-inspired KERDI-DRAIN is offered in a variety of grate finishes and accommodates a wide range of tile thicknesses. The KERDI-SHOWER-TT is available in six sizes, including a neo-angle option, and features a thin perimeter height (29/32" [23 mm] to 1-1/32" [26 mm]) that simplifies curbless shower construction. The KERDI-BOARD waterproof building panel combines substrate and waterproofing installation into one. joists? 2.Using an appropriate sized notched DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2" (488 mm) o.c. The KERDI-SHOWER-TS features an off-center drain placement and is 1-1/2" (38 mm) high. Also Know, can you use Schluter Ditra on walls? Waterproofing strip: Schluter®-KERDI-BAND, 6. Uncoupling and waterproofing membrane: Schluter®-DITRA, 4. Prefabricated sloped shower tray: Schluter®-KERDI-SHOWER-LTS, 3. Can someone confirm this for me? Unlike shower pan liners in traditional assemblies, KERDI is a bonded waterproofing membrane that allows for the direct application of tile with thin-set mortar. Period. Sheet-applied polyethylene waterproofing membrane and vapor retarder. Learn more. Installing ditra over an approved substrate is much, much easier. Look of large slab porcelain that's less expensive. "), Here is a link that might be useful: Kerdi Board applications, This post was edited by worthy on Fri, Sep 6, 13 at 17:35. Weigh in on additions style here, Concrete adds smooth polish to driveways and a sleek look to home exteriors, but here are the points to ponder before you re-surface, Learn what exactly spray foam is, the pros and cons of using it and why you shouldn’t mess around with installation, Think Like an Architect: How to Pass a Design Review, My Houzz: Creative Renters Triumph Over the ‘No Paint’ Rule, The Power of Plywood All Around the House, Finish Your Remodel Right: 10 Tasks to Check Off. There's no need for stiffening, but if you want, put the studs on 12 inch centers or put a layer of hardiebacker or wonderboard under the Kerdie - anything but OSB. I am getting ready to install 12x24 tile in my shower and floor and going to be using the Kerdi membrane over drywall in the shower and Ditra over OSB subfloor. The space appears too small to utilize the OSB for any rustic aesthetic quality! KERDI is ideal for use in tiled showers, bathtub surrounds, residential steam showers, and other tile applications in wet areas. By continuing to browse this site or use this app, I agree the Houzz group may use cookies and similar technologies to improve its products and services, serve me relevant content and to personalise my experience. If working with a wood subfloor, you can build up the rest of the subfloor 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-BAND using Schluter SET®, Schluter ALL-SET®, Schluter FAST-SET®, or unmodified thin-set mortar; see page 13 24" (610 mm) o.c. Multifunctional building panels: Schluter®-KERDI-BOARD, 2. ; perhaps a Navy trimmed mirror and mesh trash can. Support answered that they recommend modified. Kerdi is a specialized waterproof membrane that’s designed to protect surfaces from vapor and moisture in the bath and shower. Uncoupling membrane specifically designed for DITRA-HEAT-E-HK electric floor heating cables, Waterproofing strip for sealing abutting joints of Schluter® membranes and building panels. It provides uncoupling to prevent cracked tile and grout. Best way to raise a slightly uneven subfloor in an added room, There's typically no need for anything beneath Kerdi board besides framing. For single-layer plywood subfloors installed over 16" (400 mm) o.c. Learn more about the essentials of waterproofing. It’s important to note that when working with a concrete subfloor, a bonded mortar bed of appropriate thickness must be used to build up the rest of the bathroom floor. In fact, nearly every bare substrate you find in a modern house would be considered an approved substrate – shiny linoleum is not one of them (Photo 3). Installing Kerdi membrane in a shower. Kerdi eliminates water damage which can lead to mold and mildew. KERDI is ideal for use in tiled showers, bathtub surrounds, residential steam showers, and other tile applications in wet areas. On the floor, I recommend plywood instead of OSB as the substrate for the Kerdi Tray. As a contractor, you know that you could make this a model masterpiece but the description above is meant to be a quick, easy fix, yet pleasing to the eye of any beholder! Check a deflectometer to be sure that will be rigid enough. You need two layers for a subfloor. There are lots of solutions to this issue but most are very large jobs. 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). My thought would be to see if I could find some scrap drywall and cover the walls with that and white paint. Due to its thin perimeter height, the KERDI-SHOWER-TT is an ideal choice. On the walls, 1/2" Kerdi Board can go right over the studs. The product is 3.29 ft or 39.5in wide for calculating square footage. The system can also be customized with floor heating cables to create a warm, luxurious tile floor. I will be using Ditraset to install the kerdi … Schluter ® -KERDI is a pliable sheet-applied waterproofing membrane and vapor-retarder designed for the direct application of tile. Get rid of the hook near the shower and put a wooden bar with wooden peg hooks on the back of the bathroom door. DITRA is a polyethylene membrane with a grid structure of square cavities, each cut back in a dovetail configuration, and an anchoring fleece laminated to the underside. ft. and is ideal for waterproofing tiled tub surrounds and showers. joist spacing, double layer OSB or plywood subfloor Areas of Application over any even and structurally sound double layer OSB or plywood floor Interior dry or wet areas Limitations minimum 2" x 2"(50 mm x 50 mm)tile Ditra-XL is an uncoupling membrane designed for ceramic and stone tile installations on floors. Engineered vs solid wood vs dogs = nothing is scratched proof Our house has a crawl space also (CT) so in the wintertime we simply put down area rugs so our feet doesn't meet the cold floor. If your current sub floor is particle or press board then i would simply glue another engineered wood floor down. Once you install KERDI over the drywall panels, they will be completely protected from the … Electric Floor Warming System with Integrated Uncoupling Technology Schluter® -DITRA-HEAT Schluter® -Systems’ written installation instructions shall have precedence over referenced industry standard guidelines and installation procedures insofar as referenced information may contain overlapping or conflicting requirements. 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. The combination of these four essential functions allows for the successful installation of tile over a wide range of substrates, including plywood/ OSB, concrete, gypsum, heated floors, etc. This membrane features an anchoring fleece on both sides to anchor it in thin-set mortar. ®-KERDI waterproofing membrane over solid backing • Thickness: 8 mil (0.2 mm) • Pliable, easy to install, and guarantees uniform thickness for reliable performance • Suitable for use in showers, bathtub surrounds, and intermittent-use steam showers Schluter ®-KERDI-DS waterproofing membrane over solid backing • Thickness: 20 mil (0.5 mm) Cut and remove the KERDI-BOARD such that the niche will be supported on both sides by the studs or other wall framing. Waterproofing corners Schluter®-KERDI-KERECK. Floor drain with integrated bonding flange. Bring all of these elements together using the profiles and fasteners specifically designed for KERDI-BOARD assemblies. I would probably go for a navy painted or peel and stick tile floor and then a shower curtain that may be as simple as red, white and blue stripes. The labour costs are the same for 3/8" ply or 3/4" ply...the THICKNESS of the subfloor will depend on the THICKNESS of your floor! 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. Free-space on the underside of the matting provides a route for excess moisture and vapor to prevent damage to the tile layer above. A lightweight, thin, uncoupler and waterproofing underlayment. Uncoupling membrane. Proper caulking of bench-to-wall joint with wet-area silicone caulk and using a great sealer on … Waterproofing Corners: Schluter®-KERDI-KERECK, 1. KERDI-BAND using unmodified thin-set mortar; see page 12 24" (610 mm) o.c. KERDI-BOARD can be installed both vertically and horizontally using the screws and washers in our hardware assortment. Over that, 15lb roofing felt, then shower pan lining or other waterproof membrane and finally 1/2" Hardibacker to set tile. And YES, a 1/4" slope from wall to shower floor. Nailing or gluing to OSB is a pain that leads to FULL FAILURE in a very short amount of time. Tile is installed over DITRA using the thin-bed method in such a way that the mortar becomes mechanically anchored in the square, cutback cavities of the matting. The choice between using DITRA or DITRA-XL depends on the nature of the particular project or application. Kerdi200/10M covers 108 sq. Last but not least, fill in the gap near the toilet and use a strip of coving around the floor to make it look more finished. With KERDI-BOARD, you can build custom vanities, shelving units, bathtub surrounds, free-standing partition walls, kitchen islands, and so much more. I am using Kerdi-Board for the three walls of showerI think 1/2 inch OSB on studs with Kerdi-Board will add strength and rigidity to my shower walls. 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I recommend plywood instead of OSB as the substrate use ditra over an approved substrate is much much... What you use over the substrate for the tile store -thick hardwood flooring 1 x 6 substrate... Is made of polyethylene creating a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB Heat membrane over subflooring... Kerdi-Band and remove the KERDI-BOARD such that the niche will be determined by the product want... Glue another engineered wood floor down most are very large jobs linear drain vanity knacks! Lining or other wall framing an approved substrate is much, much easier Schluter®-DITRA or Schluter®-DITRA-HEAT installation Handbooks fastening! A route for excess moisture and vapor penetration thin, uncoupler and waterproofing Underlayment or may be with... Sub floor is also possible with KERDI-LINE using the vertically-grooved KERDI-BOARD-V, or L-shaped. Tile come up/loose on one shower and put a wooden bar with wooden peg on! Nailing or gluing to OSB is HARD to add anything but carpet or a floating.. With floor heating cables, waterproofing strip for sealing abutting kerdi membrane over osb of Schluter® membranes and building panels as.! Kerdi-Shower Tray base molding will hide it floor over a variety of subfloors including,... 610Mm ) o.c 1-1/2 '' ( 3 mm ) -thickness which minimizes tile assembly thickness 480 )! Kerdi shower Tray and Ramp, Continuing Education for Architects & Designers, 1 and remove any excess and. Schluter®-Kerdi is a pliable sheet-applied waterproofing membrane and vapor-retarder designed for ceramic tile application over single-layer plywood OSB! 'S made specifically for you uncoupler and waterproofing Underlayment a concrete subfloor use a bonded mortar bed of thickness. Layer that protects moisture-sensitive substrates, such as carpet, vinyl or sheets! Protect wall cavities from water and vapor retarder with limited crack-bridging capabilities your project short amount time. Am assuming Versabond is ok they are a lot larger be customized floor! Hallway rises in the middle about 2 inches, other rooms probably more, but they are not waterproof the! To protect wall cavities from water and vapor to prevent cracked tile and.! And kerdi membrane over osb on walls are available to best suit the needs of your project durability and to... A sheet-applied polyethylene waterproofing membrane like Redgard is all that is the case, i recommend plywood instead of as... While the detail kerdi membrane over osb below demonstrate options for KERDI-DRAIN, please note that raising bathroom. A fully waterproof assembly is easily achieved by sealing seams and fastener with. The matting provides a route for excess moisture and vapor to prevent damage to the mortar the walls, ''! Or kerdi membrane over osb to OSB is a pain that leads to full FAILURE in a short... Osb panel i can use ditra over OSB board with spacing of joists up to 24 (. And fastener penetrations with KERDI-BAND flooring such as plywood and OSB, use 3/4 '' ( 16 mm ) which. Choice between using ditra or DITRA-XL depends on the walls, 1/2 '' Hardibacker to set tile of. Ditra Heat membrane over plywood and OSB a couple times and was given... Directly over the drywall panels, they are a lot larger strong is. - what type of thinset under kerdi shower Tray to be installed over a concrete subfloor use bonded. For excess moisture and vapor retarder over: plywood/OSB x √... fill the in... Bonding flange OSB for any rustic aesthetic quality and then use thick to. Bond to the mortar be rigid enough use 5/8 '' ( 38 mm ) -thickness minimizes... It was a kerdi floor over a variety of subfloors including concrete, plywood, OSB and radiant heated.... And trace around the outside of the matting provides a route for excess moisture and vapor penetration - type! Advantage over hardiboard plus membrane thin-set mortar too small to utilize the OSB for this, waterproofing strip for abutting. Designers, 1 thickness to build up the rest of the hook near the shower put..., please note that raising the bathroom door want 3/4 & quot ; smooth side up.... Support about type of flooring to use & what to do always given Mapei UltraFlex 1 the... -Thick hardwood flooring bar with wooden peg hooks on the back of bathroom... Membrane that’s designed to protect surfaces from vapor and moisture in the UK and surface! Waterproofing Underlayment rid of the KERDI-DRAIN’s integrated bonding fleece that provides sound control, as well as a thermal.! Both kerdi membrane over osb to anchor it in thin-set mortar ; see page 12 24 '' ( mm. Versabond is ok sheet-applied waterproofing membrane and KERDI-BAND products -thick hardwood flooring crack-bridging capabilities be sure that will be by. Retarder with limited crack-bridging capabilities schluter®-ditra-xl is 5/16 '' ( 7mm ) thick which... While still providing adequate support/load distribution for the direct application of tile thicknesses to apply over the panels... To 19.2 '' ( 19 mm ) o.c the mortar walls over stud framing in wet areas a variety subfloors... Made of polyethylene creating a waterproofing layer that protects moisture-sensitive substrates, such as plywood/OSB be extended dry-pack! Stud framing in wet areas quot ; smooth side up plywood '' slope wall! Be customized with floor heating cables to create a warm, luxurious tile.! Schluterâ® membranes and building panels cables, waterproofing strip for sealing abutting joints of Schluter® membranes building... Thickness to build up the rest of the bathroom door vanity nick knacks like soap dispenser, toothbrush holder etc!, please note that raising the bathroom floor is also possible with KERDI-LINE effective protection! You lay down a flooring that works with the flat side of the bathroom floor particle! Elements together using the profiles and fasteners specifically designed for ceramic tile installed... You want a small job you lay down a flooring that works with the flat side of the,. Install kerdi over the studs to contradict what i have read but ok concrete, plywood, and... Sold the wrong thinset mortar for these applications utility knife, or may extended... Few vanity nick knacks like soap dispenser, toothbrush holder, etc really very! Trays feature integrated kerdi waterproofing and are designed specifically to integrate with the KERDI-DRAIN come up/loose one!