Kerdi can even be installed over drywall. Recently, I completed the Wedi trai Re: Liquid Waterproofing Membrane over Kerdi Board. HYDRO BAN bonds directly to a wide variety of substrates. Work the KERDI into the mortar by applying pressure to the membrane with the flat side of the trowel (held at an angle) in smooth, diagonal sweeps. Plastic either melts or repels compounds that it is not compatible with, which means that you could either make leaks worse by melting holes in the Kerdi, or not be doing anything at all due to the top dressing being repelled, like water and oil. Liquid-applied membrane (LAM) is a monolithic, fully-bonded, liquid-based coating suitable for many waterproofing and roofing applications. Re: Liquid Waterproofing Membrane over Kerdi Board? Cement board and grout are not water proof, if there's Kerdi no moisture is ever going to be able to get behind it. Kerdi is the vapor barrier, there is no need for anything behind it. Thanks for the replies. I’ve never used a liquid membrane over Kerdi so I can’t say what it would do? ceramictec. Please try again later. I wonder if you can help with this first query please ... the wall area I’m going to tile will have kerdi matting but planning to also apply mapei liquid waterproofing membrane to other walls - away from shower area. If you respect the kerdi band overlap specification, you won't have any problem. Whether or not you need a Kerdi membrane is a factor of use. The weak points in the system are always in the corners where one wall meets another. The manufacturer of the waterproof membrane permits this approach, and it works. Please refer to the Schluter®-Shower System Installation Handbook... Once the KERDI membrane, including seams, corners and protrusions have been completely bonded and, therefore, waterproofed... Waterproofing strip for sealing abutting joints of Schluter® membranes and building panels, Waterproof, multifunctional tile substrate and building panel, Floor drain with integrated bonding flange, Bonded waterproofing and vapor-retardant membrane, Single-component sealing and bonding compound, Using a Prefabricated Shower Tray and Ramp, Continuing Education for Architects & Designers, Schluter®-KERDI 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, construction-most-common-waterproofing-mistakes.pdf, Sheet-applied polyethylene waterproofing membrane and vapor retarder, Eliminates water damage which can lead to mold and mildew, Features a modified polyethylene (PEVA) core with non-woven polypropylene on 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. After the thinset has dried, tile is applied to the sheet membrane with thinset. Generally, Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar is used. There is no reason to use another type of drywall. I planned to go up the backer board walls about 6″ or so, but should I be applying my membrane over the entire wall/ceiling? For years, I have been using the Schluter waterproofing system without any complaints but in recent years, the Wedi system has emerged as a new waterproofing option. One thing I noticed on the installation instructions for Kerdi is that they show all the membranes on the inside/shower side of the wall surface. Liquid Waterproofing Membrane over Kerdi Board? Kerdi eliminates water damage which can lead to mold and mildew. Post There are two methods to seal KERDI to a bathtub. The first waterproof cement backer board on the market, HardieBacker with HydroDefense Technology provides the same strength, ease of […] If you have any question that the surface has been compromised, I'd recommend doing an overlay of Kerdi membrane, cheap insurance against a leak that would require ripping everything back to bare stud to repair. Find the website that's made specifically for you. 7. Once the entire membrane—with seams, corners, and connections—has been completely bonded, and therefore waterproofed, the covering may be applied. Since its inception, Schluter, the parent company, has introduced Kerdi-Board which is the same rubber membrane applied to a high-strength foam core, making its own wallboard. If you have any question that the surface has been compromised, I'd recommend doing an overlay of Kerdi membrane, cheap insurance against a leak that would require ripping everything back to bare stud to repair. I intend to use KERDI membrane behind some new bathroom wall tiling backed by drywall.. How feasible is it to transition from using the membrane to not using the membrane on a neighboring section of the same wall (i.e. Kerdi200/5M covers 54 sq. 8. Cover the joints with KERDI-FLEX. Waterproofing your bathroom showers, floors and tub surrounds is a small but integral part of any bathroom renovation. Find Kerdi tile membranes at Lowe's today. 2. A liquid waterproofing is much easier to use for this than trying to hassle with all the cuts and folds of a sheet waterproofing membrane. It is applied with a brush or roller like a thick paint. When you start using other brands of products and mixing them together, nobody knows what you'll get because the products were not designed to go together. is mapei liquid membrane ok to come into contact with kerdi? KERDI has been evaluated according to the “Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers, Version 1.1” for California Specification 01350 and found to comply with the VOC requirements. 3. HYDRO BAN is a single component self-curing liquid rubber polymer that forms a flexible, seamless waterproofing membrane. 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). by Buccaneer » Thu Jul 30, 2020 4:18 pm, Post Paint over the joint compound with any of the liquid waterproofing membranes like Redgard. Spruce » Thu Jul 30, 2020 7:52 pm, Post Some of these liquid membranes only have a 1-year warranty while I am used to an industry standard 5-year warranty on membrane systems. When installing stone tiles over Schluter's Kerdi waterproofing membrane, is it okay to use modified thinset mortar? The coating cures to form a rubber-like elastomeric waterproof membrane and may be applied over many substrates, including asphalt, bitumen and concrete. You can now access your Project List or stay on this page. However, even though it’s … After Kerdi, a brush or roller applied liquid membrane such as RedGard works very well. by Buccaneer » Fri Jul 31, 2020 6:30 am, Post Manufacturers, all of them, only want their products used because their stuff is all designed around their product line, it's made to be compatible. Backerboard plus a waterproofing membrane like Redgard is all that is needed for tub surrounds with thinset then tile. Kerdi can also be installed directly over standard drywall in a shower because, when installed correctly, it creates a continuous waterproof barrier. This is not necessary with Kerdi board. 5. Kerdi is basically plastic with a "felt" finish. For inside and outside corners, adhere pre-formed KERDI-KERECK-F corners. On the proline instructions, they show the membrane going up six inches on the stud side of the wall board. I cannot tear the Kerdi sample with my bare hands like I can the liquid-applied products. 4. For tile installations using the thin-bed method, apply Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar directly to the exposed KERDI surface and install the tiles, ensuring full coverage. HYDRO BAN is a thin, load bearing waterproofing/crack isolation membrane that DOES NOT require the use of fabric in the field, coves or corners. Connections to fixed building elements can be achieved by using KERDI, KERDI-BAND, or KERDI-FLEX in conjunction with KERDI-FIX, suitable trowel-applied waterproofing materials (such as urethane or similar), that require atmospheric moisture to cure, or other suitable sealing compounds. Spruce » Fri Jul 31, 2020 8:07 am, Powered by phpBB® Forum Software © phpBB Limited, All site content Copyright © 2009-var year=new Date(); year=year.getYear(); if (year<1900) year+=1900; document.write(year); House-Improvements.com. There are two things I don't like about liquid … Well, that brings us to the end of our list. The Schluter-KERDI-DRAIN provides a simple and secure connection to the KERDI membrane at the top of the assembly. Cut KERDI to size prior to application. Cement board and grout are not water proof, if there's Kerdi no moisture is ever going to be able to get behind it. 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. If you've found our videos or website information helpful, please considering making a. ... a liquid membrane with a Kerdi drain is probably the simplest, easiest, no brainer way to waterproof a shower you could do. 12-05-2010, 11:22 AM. only one section of the wall needs waterproofing, … I think you know the answer to your question about Schluter Kerdi over drywall. California Specification 01350 is referenced by various green building standards and rating systems. KERDI features a modified polyethylene (PEVA) core with non-woven polypropylene on both sides to anchor the membrane in the thin-set mortar. 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. I installed the Kerdi system shower tray and wall board kits. Schluter®-KERDI is a pliable sheet-applied waterproofing membrane and vapor-retarder designed for the direct application of tile. Schluter Systems Kerdi Membrane Is The Best Solution For Waterproof And Watertight Tiled Shower Or Steam Room.Schluter Systems Kerdi Waterproof Membrane Is A Bonded Membrane & Vapor Retarder Made Of Soft Polyethylene (have Crack Prevention capabilities), Both Sides Of Schluter Systems Kerdi Waterproofing Membrane Have Special Webbing Synthetic Fibers That Allows Perfect Bond With Thin … Waterproof sheet membrane such as Schluter Kerdi is applied to the cement board with thinset adhesive. KERDI features a modified polyethylene (PEVA) core with non-woven polyproplyene on both sides to anchor the membrane in the thin-set mortar. WATCH HERE: https://www.youtube.com/watch?v=3TRLd2HYhbU&list=PLO47JMsdYGrkxM_ZkOc3lMnsVhTqj80bB#justdoityourself #lovingit … Schluter®-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. and KERDI-SEAL-MV at the mixing valve. For floor/wall connections, use KERDI-BAND. KERDI is ideal for use in tiled showers, bathtub surrounds, residential steam showers, and other tile applications in wet areas. Kerdi is the vapor barrier, there is no need for anything behind it. If the women don't find you handsome, they should at least find you handy. Articles on this seem to be vague, focusing only on the horizontal surfaces like floors and niches. Kerdi is waterproof up to a certain water pressure. This means that any water that passes through the grout or tile never enters the mortar base as with a traditional PVC pan liner and clamping drain. It simply hits the Kerdi membrane and then travels through the thinset and into the drain. There may be incompatibilities in the materials, say the compounds in Red Guard, that don't play well with the compounds in the Kerdi surfaces. Install KERDI-SEAL-PS pipe seals at showerhead, body sprays, etc. Air bubbles must be avoided. Kerdi is a sheet-applied polyethylene waterproofing membrane and vapor retarder. Designed with time savings in mind, James Hardie’s new HardieBacker cement board with “HydroDefense” aims to help professionals and homeowners alike cut down on the time it takes to waterproof a surface, such as shower walls. Press KERDI fully into the bond coat. Sorry, something went wrong. ft. and is ideal for waterproofing tiled tub surrounds and showers. by Shannon » Thu Jul 30, 2020 10:30 pm, Post Shower Waterproofing Crash Course. That's the same thing the lady at Schluter's said. The thin-set mortar used for bonding KERDI must be appropriate for the substrate, and it must penetrate and engage the KERDI fleece. Use speed set mortar to bond them over the screws if time is of the essence. I would not use a liquid membrane over a Kerdi tray. Both are face screwed. The substrate must be clean, even, and load bearing. This keeps the cost of the liquid down a bit as your only doing the corners covering the screws, and the pan. In normal residential use I wouldn't worry about it. I know that Schluter recommends unmodified thinset mortar, but my supplier suggests that the large and heavy tiles will be easier to install with a … Tiles can be installed directly on KERDI using the thin-bed method. I would either Kerdi it which is not to complicated, just follow instructions Also to know is, can you paint over Kerdi membrane? Seams can be constructed by overlapping the edges of the KERDI 2" (5 cm) using Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar, or by abutting the edges and covering the joint with KERDI-BAND using Schluter-SET, Schluter-ALL-SET, Schluter-FAST-SET, or unmodified thin-set mortar. Although all of these types of products are far better than vapor barriers behind concrete board or no waterproofing whatsoever, I sleep better at night using membrane systems like Schluter Kerdi. Having the membranes on the shower side of the wall board makes sense to me. Kerdi vs Redgard: To waterproof over the cement board I recommend either a sheet membrane or a liquid waterproofing membrane. They can dimple if you put point pressure on it. KERDI was developed as a waterproofing membrane to be used in conjunction with ceramic and stone tile coverings. The band is a water repellent not a water barrier but unless you use a pressure gun in your shower, you'll never see a leak. by A. Schluter®-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 Waterproofing Membrane Strip. Kerdi can even be installed over drywall. Other trowel-applied covering materials, such as plaster, can also be used. Kerdi really offers very little advantage over hardiboard plus membrane. Note: Water testing of the assembly If the women don't find you handsome, they should at least find you handy. Re: kedi band over dens shield You have to create your own lap joints with Wedi, router or cordless circ saw. Hello First time poster- embarking on a wetroom project. Shop tile membranes and a variety of flooring products online at Lowes.com. 1. Schluter®-KERDI is a pliable, sheet-applied, bonded waterproof membrane and vapor retarder with limited crack-bridging capabilities. 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 shall be separated at existing expansion, structural, and flexible edge joints. Schluter®-KERDI-DS is a bonded waterproof membrane and vapor retarder with very low water vapor permeance for use in continuous use steam rooms and similar applications. 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