Ditra is a decoupler, meaning (in this case) there’s no chemical bond between the tile and the subfloor. Provided the joints, floor to wall transitions and connections to building fixtures are properly installed, Schlüter®-DITRA creates a waterproofing assembly with the tile covering that meets the requirements of the mandatory guide- Will this be enough though? We recently had to remove a bath floor that was installed on Ditra - I thought it would just require a flat shovel or scrapper to get under the ditra and separate it form the sub floor. any leveling of the subfloor must be done (16 mm) tongue-and-groove with 1/8" (3 mm) gap between sheets. We were going to replace the particle board with a 5/8 inch exterior grade plywood and then use the 1/8 inch Ditra. DITRA-HEAT is primarily intended to warm tile floors and make them more comfortable underfoot, ... overlapping or conflicting requirements. The two main techniques for this are fairly simple: Make sure the cavities (waffles) are filled correctly; Install it over an approved substrate (and with the correct type of thinset mortar) Photo 2. To set DITRA over concrete or gypsum, Schluter-Systems recommends an unmodified thin-set mortar meeting the requirements … The minimum spacing is as follows. It’s a pretty cool system for DIYers or professionals. Requirements maximum spacing of joists, I-joists, or floor trusses is 16" (406 mm) o.c. However, today’s lightweight construction methods can make the installation of hard surface coverings particularly challenging. If using natural stone, you need more plywood. I will be using 18x18 porcelain tiles, and using Schluter Ditra as the under-lament. Because it is waterproof and resists movement, cement board is the preferred backing material for ceramic tiles. DITRA prevents tiles and grout from cracking because of it’s geometric configuration. How to Repair Uneven Cement Boards. 1. IN GENERAL: ensure subfloor panels are level and properly fastened to the joists. schluter ditra matting waterproofing membrane 5.4m x 1m left over roll - new. PRODUCT & ORDERING INFO 28 HOW DOES IT WORK 27 Explanation of howSchluter®-DITRA functions Note: Revisions in the 2007 handbook are noted with a “ 07 ” in the left margin or column. With cement board, the tile is mortared to the cement board and the cement board is mortared to the substrate, so there’s a chemical bond. Keep in mind that DITRA-HEAT cables should not be underneath a vanity. In conjunction with tiled coverings, Schlüter®-DITRA 25 forms an uncoupling, waterproofing and vapour pressure equalisation layer. Ask Question Asked 9 years, 4 months ago. Schluter - DITRA and DITRA-XL alternatives Prova Flex and Prova Heat are specifically developed for ceramic and stone tile installations Prova Flex and Prova Heat offer uncoupling to avoid split tile and grout. The Ditra handbook gives requirements for subfloor thickness and joist geometry. When in doubt, always increase the thickness of the underlayment. The cut-back stud structure of the Ditra-Heat membrane holds the heating cable in place without the use of clips or fasteners. AND if your subfloor is tented or butted together super tight, Requirements maximum spacing of joists, I-joists, or floor trusses is 16" (406 mm) o.c. The house is 19 years old if that tells you anything. The Universal Underlayment for Ceramic and Stone Tile. Ceramic and stone tiles are durable, easy to maintain, and hygienic, representing the ideal surface coverings. Step 1: Planning DITRA-HEAT Heated Flooring Systems. Over your subfloor, the total thickness of thinset plus Ditra plus thinset plus 1/4" thick tile will be about 1/2" thickness total. 2. 3. Substrate Preparation verify that subfloor panels are properly fastened to framing members. minimum subfloor thickness – 19/32", 5/8" nom. As far as I can tell, under the linoleum is some sort of particle board, and underneath that should be the bare floorboards. CONTENTS 4 Floors, Interior – 16, 19.2, & 24-inch o.c. Schluter DITRA is an uncoupling mat that’s placed over wood or cement subfloors. The DITRA mat uncouples the tile from the wood subfloor and can also be waterproofed. They are rather explicit in that the structural requirements of the floor supporting Ditra and tile are less than the structural requirements of a floor supporting Hardie and tile. For example, to set DITRA over plywood or OSB, a modified thin-set mortar meeting the requirements of ANSI A118.11 is used. Ceramic and stone tiles are durable, easy to maintain, and hygienic, representing the ideal surface coverings. Underlayment methods for concrete subfloors typically include filling low areas with self-leveling compound and installing an uncoupling membrane (such as Schluter-DITRA or Laticrete Strata Mat), which helps prevent cracks in the concrete from transferring to the tile. DITRA-HEAT uses the same technology and allows heating cables to be run in it’s stud structure. To set DITRA over concrete or gypsum, Schluter-Systems recommends an unmodified thin-set mortar meeting the requirements of ANSI A118. First things first, get the total square footage of your bathroom. Type, thickness, and format of the tile or stone surface covering must be suitable for the intended application. Schluter Ditra MattingEach roll is 1 metre wide this matting is left over from a self build project that has now completed and so is surplus to requirements. Additionally, what mortar do I use with Ditra? Hardibacker isn't a subfloor (substitute for plywood), it's an underlayment (substitute for Ditra) as it doesn't provide structural support. Schlüter®-DITRA 25 is a waterproof poly-ethylene membrane with a relatively high vapour diffusion density. DITRA will forever change the way you lay tile. All the specifics for DITRA installation are in the handbook or on Schluter’s site. Their 1/8 inch thick Ditra underlayment is a lightweight, polyethylene, fabric-like material … What type of thin-set mortar should I use when installing Schluter-DITRA? Provided the joints, floor to wall transitions and connections to building fixtures are properly installed, Schlüter®-DITRA 25 creates a waterproofing assembly with the tile covering that meets the requirements of the mandatory guide- Schlüter®-DITRA 25 Underlayment Uncoupling, waterproofing and vapour pressure equalisation 6.1 Product data sheet. Provided the joints, floor/wall connections, and connections to building fixtures are properly installed, Schlüter®-DITRA creates a waterproofing assembly with the tile covering that meets the requirements of the mandatory guide- This difference, Ditra fans would argue, makes it more resistant to movement. The type of thin-set mortar used to install DITRA depends on the substrate material. Type, thickness, and format of the ceramic or stone tile surface covering must be suitable for the intended application. 11 years ago. Legend Essential Significant Helpful . The subfloor is 23/32" OSB supported by 2" x 10" floor joists spaced CTC at 16". We are remodeling our laundry room and I have ripped out the existing laminate floor and plywood layer down to the subfloor. minimum subfloor thickness – 19/32", 5/8" nom. Immediately after the Schlüter®-DITRA 25 matting is installed, the tiles can be set using the thin-bed method and using a bonding tile adhesive that matches the requirements of the covering. Ditra-Heat provides uncoupling to neutralize shear stresses between the substrate and the tile covering to prevent cracked tile and grout. Schluter Ditra Matting-Un-coupling Membrane for ti . Don't lay tiles on a concrete slab with cracks that appear to be spreading or irregularities that prevent you from leveling it. DITRA will forever change the way you lay tile. The Universal Underlayment for Ceramic and Stone Tile. However, today’s lightweight construction methods can make the installation of hard surface coverings particularly challenging. 6.1 Schlüter®-DITRA 25 Load transfer 2 ity or compliance with the general certificate of national technical approval (abP). I have a question on subfloor requirements for putting down ceramic tile. While Ditra is my preferred membrane for floor tile installation (as well as countertops and tub decks) it absolutely needs to be installed correctly. 11 is used. For example, to set DITRA over plywood or OSB, a modified thin-set mortar meeting the requirements of ANSI A118.11 is used. Then deduct the areas that won’t be heated, e.g. It also eliminates the need for a self-leveling compound which minimizes the assembly thickness and allows for quicker installation. Substrate Preparation verify that subfloor panels are properly fastened to framing members. I’m leaning towards the laticrete since it’s cheaper and I don’t know any better. Schlüter®-DITRA 25 is a polyethylene mat with square, dovetailed recesses and an anchoring fleece laminated to the underside. Inspect the floor for protruding nails or screws (fix squeaks before installing any flooring). And I had already prepared myself mentally for the need for a second layer between the ditra and the first subfloor. Each of these floors are currently linoleum. contain overlapping or conflicting requirements. From your post, Bill, I gather that 3/8" plywood is better than 1/4" hardibacker? Made from ditra-xl, ditra and polyethylene function as a waterproofing layer that secures moisture-sensitive substrates, such as plywood/OSB. If the concrete is already flat, dry and crack-free, no other preparation may be needed. Ditra is about 1/8" thick. It is recommeded to fill the square cavities with the smooth side of the trowel and to establish a regular pattern in the bonding adhesive with the notched side of the trowel in one application. Re: ditra vs cement board Our tile installed switched from Durock to Ditra a few years back - we have been very happy. Subfloor condition: The subfloor must be free of moisture damage, including rot and sponginess, and must be securely fastened to the joists and squeak-free. For example, to set DITRA over plywood or OSB, a modified thin-set mortar meeting the requirements of ANSI A118. Like; Save ; weedyacres. Requirements for using Schluter Ditra. The type of thin-set mortar used to install DITRA depends on the substrate material. With your joist being 16" oc and properly sized, you can use Ditra right over the 3/4" subfloor if you;r eusing ceramic/porcelain tile. the bathtub, vanity and toilet. I’m thinking about screwing the existing osb down more, then using a Ditra or laticrete stratamat underlayment, then tiling. It seems like this will get me close to the 3/4” height requirement. I’m not sure about subfloor requirements, I’ve only tiled on concrete. Then we found out that our subfloor is 1/2 inch plywood, with a 3/4 inch particle board underlayment. For example, to set DITRA over plywood or OSB, a modified thin-set mortar meeting the requirements of ANSI A118.11 is used. 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