I was thinking of mortaring cement board (extra expense) on top of the ditra. Pro-Tip: It’s easier to cut DITRA from the backside. What is the purpose of the 1/2″ margin around the perimeter? At this point, the subfloor has been flashed (flattened) to eliminate any high or low places, and Jim and Rich are ready to install the DITRA. Using a flat trowel, Jim and Rich filled all the cut-back cavities with Ditra-Set. For example, wood expands and contracts with seasonal changes. ya. Another option is some of the heat membrane companies will allow CERTAIN self-levelers over the top of the membrane. He is using the Ditra underlayment, and it is being placed over a concrete floor. Ditra is an uncoupling membrane designed for ceramic and stone tile installations on floors. %���� It provides uncoupling to prevent cracked tile and grout. It is a universal substrate for tile coverings, which serves as an uncoupling layer, bonded waterproofing and moisture vapour barrier and is designed for the attachment of the matching heating cables of the system for floor heating. First things first, get the total square footage of … It’s so nice to see professionals taking their time to do things right. Ardex is one company that makes both the membrane, Ardex Flexbone Heat, … At the joints, fill the matting with unmodified thin-set mortar, approximately 8" (203 mm) wide, centered over the joint. If they had begun laying tile, Jim and Rich would have filled a small section of cut-back cavities and then combed additional mortar over the DITRA. Next, they would have set the tile in the typical manner. Schluter®-DITRA-HEAT integrates customizable, comfortable electric floor warming with the functions associated with DITRA: uncoupling, waterproofing, vapor management and support to ensure a long lasting installation. They could have just used hair spray over the chalk line and it would stay put. The result is that the tile is actually bonded only to the squares and not to the DITRA between the squares as much, but that ends up being OK. Looks like a lot easier application, but just wondering. Modified thinset must air-dry, and that can be a lengthy time-period because the mortar is sandwiched between impervious materials (the DITRA and the tile). This is no different than when a foundation is poured in horizontal sections and allowed to set before another layer is put on top…you get leaks because it is not a cohesive whole. All penetrations must be treated with or over,? The cut-back stud structure of the Ditra-Heat membrane holds the heating cable in place without the use of clips or fasteners. The two main techniques for this are fairly simple: Make sure the cavities (waffles) are filled correctly; Install it over an approved substrate … The type of thin-set mortar (modified vs. unmodified) used to install DITRA depends on the substrate. i.e. OVERVIEW. Thanks for visiting! It is totally false that you can walk on it or tile immediately because the next day she called me and told me that there were big dips and unevenness because of where we walked on the ditra and squished the mortar with our walking on it. A person’s foot doesn’t have enough psi to compress or crush the molded plastic. For instance, to install DITRA over plywood, a modified thinset mortar should be used. DITRA is really cool. /Length 2574 �ꇆ��n���Q�t�}MA�0�al������S�x ��k�&�^���>�0|>_�'��,�G! It also eliminates the need for a self-leveling compound which minimizes the assembly thickness and allows for quicker installation. DITRA-HEAT Uncoupling Membrane. The substrate must be free of bond inhibiting components, be load bearing and even. DITRA is approved for use with ceramic, porcelain, and natural stone tile. After the DITRA was laid out, the guys mixed more Ditra-Set, and again, they let the mortar slake for about 15 minutes. Ceramic and stone tiles are durable, easy to maintain, and hygienic, representing the ideal surface coverings. 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 t… In fact, you don’t even have to top coat before you lay tile – you can put the thinset on in one step. Over the last eight years we've documented hundreds of home improvement and DIY craft projects along with many tool and material reviews. They also scraped away excess mortar that oozed underneath the drywall. >> Planning DITRA-HEAT Heated Flooring Systems. �V��)g�B�0�i�W��8#�8wթ��8_�٥ʨQ����Q�j@�&�A)/��g�>'K�� �t�;\�� ӥ$պF�ZUn����(4T�%)뫔�0C&�����Z��i���8��bx��E���B�;�����P���ӓ̹�A�om?�W= Pro-Tip: A small v-notch trowel is also acceptable. It does not have to be uniformly covered. Schluter®-DITRA Installation Handbook 2020. Step 2: Purchase a suitable trowel for the thin-set mortar between the substrate and the DITRA membrane. I’m continuously impressed with the level of work I see from Jim and Rich. Or maybe I am just splitting hairs and those indents are not a big deal. DITRA-HEAT is primarily intended to warm tile floors and make them more comfortable underfoot, but can contribute to space heating. Other videos in the playlist 26:17. ®Schluter-DITRA-HEAT integrates customizable, comfortable electric floor warming with the functions associated with DITRA: uncoupling, waterproofing, vapor management and support to ensure a long lasting installation. Ditra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. DITRA is composed of a polyethylene (plastic) grid of square cavities, each with angled, dovetail cut-backs, and an anchoring mesh laminated to the backside. Pro-Talk: Slaking is the process of leaving the thinset undisturbed to allow the water to completely penetrate the dry ingredients. Does Schluter recommend filling of voids before laying tile? Part of the beauty of DITRA is that it’s easy to cut, and there’s no minimum size requirement. Know the joist spacing of your home before installing DITRA. I have walked the floor a few times and you can see why the product works. They worked carefully to completely fill all the space and avoid leaving ridges on the surface. There is no place for the water to evaporate and will not dry. The area between the cut-out squares is actually flexible, but the squares themselves are rock-solid. the space is left for expansion and contraction. It can be installed over a variety of substrates including plywood, OSB, existing vinyl, structural planks, and concrete. tiles adhering to the pre-filled voids? 2y�.-;!���K�Z� ���^�i�"L��0���-�� @8(��r�;q��7�L��y��&�Q��q�4�j���|�9�� I feel it weakens the system. Pro-Tip: Ensure the Ditra-Set is spread evenly to avoid lumps. After about 24 hours, it’ll be ready for tile, and meanwhile Jim and Rich are getting started on the over half. It is a waterproofing membrane and separation layer between tile and the subfloor, which is often made of wood. can Ditra be used over exterior expansion joints? It is the specifier's responsibility to treat and address all penetrations through the KERDI membrane or KERDI-BOARD (e.g., showerhead, mixing valve, etc.) Very nice work there. 1 m x 30 m), and it’s lightweight and easy to cut. DITRA-HEAT is primarily intended to warm tile floors and make them more comfortable underfoot, but can contribute to space heating. Schluter®-DITRA Installation over Wood Full Video Series ... How to install Schluter®-DITRA Uncoupling Membrane over Raised Access Floor Panels. The best part is that it solved my issue of heat loss through the cold concrete floor. Schluter recommends mixing the thinset to a “fairly fluid consistency (but still able to hold a notch).”. "F$H:R��!z��F�Qd?r9�\A&�G���rQ��h������E��]�a�4z�Bg�����E#H �*B=��0H�I��p�p�0MxJ$�D1��D, V���ĭ����KĻ�Y�dE�"E��I2���E�B�G��t�4MzN�����r!YK� ���?%_&�#���(��0J:EAi��Q�(�()ӔWT6U@���P+���!�~��m���D�e�Դ�!��h�Ӧh/��']B/����ҏӿ�?a0n�hF!��X���8����܌k�c&5S�����6�l��Ia�2c�K�M�A�!�E�#��ƒ�d�V��(�k��e���l ����}�}�C�q�9 After the guys had laid out the DITRA, they used pencils and chalk to mark spread lines along each joint. However, today’s lightweight construction methods can make the installation of hard surface coverings particularly challenging. When you prefill the voids and then allow the mortar to dry…you have created a breakpoint between old and future mortar. Ditra is a polyethylene uncoupling membrane. Note: Schluter and Bostik generously donated the DITRA and the Ditra-Set Mortar for this project, enabling the development of this Pro-Follow guide. x 98 ft. 5 in. They laid it out keeping about 1/2″ margin around the perimeter. DITRA will forever change the way you lay tile. Schluter Ditra is installed on the plywood sub floor with a polymer modified thinset, using an 11/64" square notched trowel. My husband is trying for the first time to install a tile floor. Schluter DITRA-HEAT Membrane is also sold by full roll, or in sheets. Pro-Tip: The guys say that the most likely mistake when installing DITRA is failing to fully seat the matting in the mortar. Fill DITRA Cavities. Observe the curing times of all materials. Open time for Ditra-Set is about 20-30 min so the guys only mixed what they could use in that timeframe. �x������- �����[��� 0����}��y)7ta�����>j���T�7���@���tܛ�`q�2��ʀ��&���6�Z�L�Ą?�_��yxg)˔z���çL�U���*�u�Sk�Se�O4?׸�c����.� � �� R� ߁��-��2�5������ ��S�>ӣV����d�`r��n~��Y�&�+`��;�A4�� ���A9� =�-�t��l�`;��~p���� �Gp| ��[`L��`� "A�YA�+��Cb(��R�,� *�T�2B-� It comes in long rolls (i.e. instructions! Apply DITRA-HEAT or DITRA-HEAT-DUO to the floor, fleece side down. I just pulled up a tile and it was still very wet after 5 days. If you have extra modified thin-set from the membrane installation you can use that to fill in the studs. Just keep a bit of distance from the chalk line so you don’t blow it away with the hair spray. Can ditra be (or is it recommended to be) installed over cement board? The tile assembly needs to be able to handle that which is why it’s important to incorporate an uncoupling membrane that allows for in-plane movement. Subsequently, drying takes place only through the tile joints. The guys also cut around the support posts, door jambs and threshold. Ditra-heat is a polyethylene uncoupling underlay with circular pucks and a fleece underside that adheres to cement. Tile floor heating systems. The goal was to make full contact between the fleece matting and the mortar. Schluter®-DITRA Installation over Wood Full Video Series . n�3ܣ�k�Gݯz=��[=��=�B�0FX'�+������t���G�,�}���/���Hh8�m�W�2p[����AiA��N�#8$X�?�A�KHI�{!7�. However, Jim and Rich opted to fill the cavities, let it dry, and begin laying tile another day. The thinset is also so thin (and absorbed by the fleece layer) that it isn’t displaced by foot traffic either. I am confused as to how you’re allowed to walk on DITRA that hasn’t set up yet. Jim and Rich are professional tile contractors with decades of experience. Or maybe I am wrong altogether and DITRA set is magical and does not conform to the laws of physics like gravity and displacement (the most likely explanation). What size trowel is recommended for laying tile over Ditra? Schluter ®-DITRA-HEAT integrates customizable, comfortable electric floor warming with the functions associated with DITRA: uncoupling, waterproofing, vapor management, and support to ensure a long lasting installation.. The anchoring fleece is embedded in thin-set mortar to provide a mechanical bond to the substrate. There would have been no problem accomodating dips of less than a mm with the tile bed had you followed the instructions. What if I can see a lot of the orange after the application of that top coat? or as a leveling in between, for marble, and Red Guard between marble and float, to ensure transition point of a repair not to harm the warm wire,?? If so what needs to be done at the transitions? Check out the installation handbook for even more information and certifications. One reason was that they couldn’t use the chalk line on the ditra mat. The guys got started by sweeping the floor with foxtail brushes to ensure a clean surface. Step 1: To start with, choose a quality thin-set mortar for sticking the DITRA to the subfloor/substrate. Schlüter-DITRA-DRAIN is cut to size, embedded in the applied adhesive and immediately pressed into the thin bed adhesive with a float or a roller. I just used Ditra for a living room tile job… the base thinset (on concrete) dried like a champ, but when tiling, the pre-mix mortar the client wanted to use has taken over a week to dry. ft. of substrate. So yes, be sure and leave a little space for this to happen. That said, the most important part of the whole thing is the ditra itself, specifically it’s uncoupling from subfloor, substrate, etc. Installation. I just put a ditra underlayment on my daughter’s concrete basement floor. Noticed that the guys doing the demo opted for leaving the matting to dry and then tiled the next day. << Ditto. Even a perfectly level subfloor won’t guarantee a beautiful, long-lasting tile floor. Also important to use a damp sponge to wipe down the plywood before you put down the ditra mat. H���yTSw�oɞ����c [���5la�QIBH�ADED���2�mtFOE�.�c��}���0��8�׎�8G�Ng�����9�w���߽��� �'����0 �֠�J��b� Know Joist Spacing. The type of bonding adhesive used to apply Schlüter®-DITRA 25 depends on the type of substrate. Ditra 323 sq. ft. 3 ft. 3 in. in the installation. I can’t wait to see the finished product. Put simply, Schluter® membranes uphold the integrity of tile and help … Cables snap into the membrane; clips and fasteners are not required Schluter-DITRA-HEAT-DUO is an uncoupling and waterproofing membrane with an integrated bonding fleece that can also be used to reduce sound transmission between floor –ceiling assemblies. Using the spread lines, Jim troweled the Ditra-Set over half a section. Installed beneath tiled floors, Schluter®-DITRA uses an innovative uncoupling technology that prevents cracked tile and grout while providing effective waterproofing. Schluter®-DITRA Installation Handbook 2017. What about using a latex-modified thinset? Pro-Tip: Rich always began working the grout float in the middle of a section to stretch and press wrinkles outward. The Universal Underlayment for Ceramic and Stone Tile. Wouldn’t this create a bunch of footprint sized indents (valleys), thereby defeating the flat surface? After the DITRA was in place, Rich used a grout float to firmly press the DITRA into the mortar, and the guys paid special attention to the  edges. I think it probably took them a good while to figure out how to deal with the sheer stress in large tile floors, and this solution is very unique… It basically decouples the mortar bed on the slab from the mortar bed with the tile, and it does it by using the geometric dove-tail shape to hold the top mortar bed in place. ��w�G� xR^���[�oƜch�g�`>b���$���*~� �:����E���b��~���,m,�-��ݖ,�Y��¬�*�6X�[ݱF�=�3�뭷Y��~dó ���t���i�z�f�6�~`{�v���.�Ng����#{�}�}��������j������c1X6���fm���;'_9 �r�:�8�q�:��˜�O:ϸ8������u��Jq���nv=���M����m����R 4 � The product is called Schluter ®-DITRA-HEAT-DUO. Pro-Tip: DITRA can be walked on immediately after; there’s no need to wait for the mortar to cure. It is made of polyethylene creating a waterproofing layer protecting the substrate. Is it ok to use detra when transitioning from plywood to slab? I personally wouldn’t prefill the ditra waffling as done in this project. DITRA can be used as a waterproofing membrane for vapor and moisture management, and to support / distribute heavy loads. /Filter /FlateDecode But, the modified thin-set has to dry over night. Does this get worked out in the “fill the voids” process whereby you basically re-float the surface and still have the ditra layer you’re after? Hi, we're Ethan, Jocie, Kim and Fred. Pro-Tip: Expect to use one 50 lb. Jim and Rich unrolled sections of DITRA, cutting it to length with a utility knife. Look for more details in the Related Content section at the end of this article. The Universal Underlayment for Ceramic and Stone Tile. I am doing a remodel/addition and will end up with basement, crawlspace and slab all with continuous tile. Can the Ditra be placed flushed to the wall, or is the 1/2″ margin required? They’ve used DITRA extensively on many jobs and highly recommend it, especially over cracked concrete. Adjacent pieces of DITRA were butted against each other, and Jim and Rich were careful to avoid overlap (thereby creating a height difference). It works exactly as Ditra does, however, it incorporates in-floor heating. x 1/8 in. /N 3 Unmodified thinset is a mixture of Portland cement which actually requires moisture to form a strong bond and achieves final set usually within 24 hours. It has a grid structure of square cutback cavities with an anchoring fleece laminated to the underside. Also, what size trowel is recommended for laying the Ditra. Ditra is a polyethylene uncoupling underlayment with a grid Ditra is an uncoupling membrane designed for ceramic and stone tile installations on floors. Schluter does not recommend using a latex-modified thinset for the next steps because it cures differently than unmodified thinset. The Ditra layer should be directly underneath the tile layer. Made of polypropylene. Instead of having inverted square picks on the membrane, Ditra-Heat has elevated circular pucks that make it easy for heated cables to embed into.

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