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Its crossbones mat pattern reduces touch points and air space to deliver faster, more efficient floor warming. The system supports one-pass prefilling using ARDEX high-performance mortars, or approved ARDEX self-leveling underlayments to fully encase the heating cables. It can also serve as a waterproofing layer in bathrooms and wet areas, while functioning as an uncoupling membrane to help protect tile and grout joints from substrate movement.",{"@graph":69,"@context":121},[70,84,104],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/ardex-flexbone-heat-in-floor-heating-systems-description-and-usage/671949/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":98,"encodingFormat":97,"isAccessibleForFree":99,"interactionStatistic":100},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/ardex-flexbone-heat-in-floor-heating-systems-description-and-usage/671949.png","ImageObject",300,407,{"name":92,"@type":93},"Chumphorn","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-02",true,{"@type":101,"interactionType":102,"userInteractionCount":14},"InteractionCounter",{"@type":103},"ViewAction",{"@type":105,"mainEntity":106},"FAQPage",[107,113,117],{"name":108,"@type":109,"acceptedAnswer":110},"What is ARDEX FLEXBONE® HEAT used for?","Question",{"text":111,"@type":112},"It is an electrical in-floor heating system for tile or stone installations. The mat can provide heating and also be used as a waterproofing layer in wet areas.","Answer",{"name":114,"@type":109,"acceptedAnswer":115},"How does FLEXBONE® HEAT improve heating performance?",{"text":116,"@type":112},"Its unique crossbones pattern reduces touch points and air space within the mat, enabling faster and more efficient heating of the floor covering.",{"name":118,"@type":109,"acceptedAnswer":119},"Where can ARDEX FLEXBONE® HEAT be installed and what should be avoided?",{"text":120,"@type":112},"It is intended for indoor use on substrates such as concrete, wood, and gypsum. Do not install electrical heating cables under vanities, showers, bathtub platforms, cabinets, islands, solid counters, or in closets, and avoid running cables under walls or heating more than one room with an individual cable.","https://schema.org",{"og:url":83,"og:type":123,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":125,"canonical":83},"index,follow",{"doc_id":127,"site_id":62},671949,1793583153,{"code":4,"msg":5,"data":130},{"doc_id":127,"user_id":131,"nickname":92,"user_avatar":132,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":133,"file_id":134,"file_url":135,"file_type":136,"file_size":137,"view_count":14,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":44,"language":138,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":139,"faqs":140,"seo_title":141,"seo_description":67,"update_tm":128,"read_time":142},2336475401981,"https://ap-avatar.wpscdn.com/avatar/22000c94efd8d5204d?x-image-process=image/resize,m_fixed,w_180,h_180&k=1786935347598174694","ARDEX  \nFLEXBONE® HEAT  \nIn-Floor Heating Systems  \nInnovative Design for Maximum Comfort and Energy Efficiency  \n3-in-1 In-Floor Heating, Uncoupling and Waterproofing  \nUncoupling: protects tile and grout joints from shear movement in the substrate Waterproofing: protection for use in bathrooms, laundry rooms and other wet areas Maximum heat efficiency, more heat comfort with less energy usage  \nMinimal roll memory – rolls out flat every time!  \nHigh quality heating cables – more efficient, easier to install, less cable required Ideal for large-format tile and stone installations  \nFLEXBONE® Effect: prefill with mortar in just one pass  \nARDEX Self-Leveling Underlayments; worry-free prefill option that  \nfully encases cables  \nSingle-Source, Complete System Solution  \nARDEX Americas  \n400 Ardex Park Drive Aliquippa, PA 15001 USA 724-203-5000  \n888-512-7339 [www.ardexamericas.com](www.ardexamericas.com)  \nARDEX FLEXBONE® HEAT  \nIn-Floor Heating Systems   \nDescription and Usage  \nARDEX FLEXBONE® HEAT is an electrical in-floor heating system for use with tile or stone. The unique crossbones pattern provides less touch points between the cables and the membrane, and less air space within the mat structure, providing faster and more efficient heating of the floor covering. The unique design also allows for easy prefilling in just one pass with ARDEX high-performance mortars, or approved ARDEX Self-Leveling Underlayments can be used for easier, faster prefilling to fully encase the heat cables. ARDEX FLEXBONE® HEAT can be used as a waterproofing layer in bathrooms and other wet areas. Ideal for largeformat tile and stone installations, ARDEX FLEXBONE HEAT is also an uncoupling membrane that helps to prevent grout joint and tile damage from underlying substrate movements.  \nARDEX FLEXBONE HEAT is approved for CSA-W = “Wet Rating.”  \nFor Use Indoors on the Following Substrates  \n• Concrete  \n• Wood  \n• Screeds  \n• Gypsum  \n• Cement backer unit  \n• Existing tiles  \nSuitable Uses  \n\n| Residential Construction | Yes |\n| --- | --- |\n| Hotel* and Residential Bathrooms | Yes |\n| Cafeterias | Yes |\n| Commercial Offices | Yes |\n| Restaurants | Yes |\n| Retail Stores | Yes |\n\n*These requirements do not cover the use of electrical heating systems on or as part of a certified fire resistance building assembly.  \nRecommended Tools  \nDrywall square or straight edge, utility knife or ARDEX FLEXBONE® Shears, 35 - 75 lb. roller or rubber float, electrical tester and a 1/4” x 1/4”(6 x 6 mm) square notch trowel  \nAccessories  \nARDEX UD 146™ Edge Insulation Strip ARDEX UD 156™ Movement Joint Tape ARDEX SK 175™ Seam Tape FLEXBONE® HEAT Cables - UL-E478486 -UL Listed U.S. and Canada  \nARDEX Thermostats and Power Modules UL-E157297 - UL Listed U.S. and Canada  \no FLEXBONE® HEAT Remote WiFi and Touch Thermostat - \\#30068  \no FLEXBONE® HEAT Touch Programming Thermostat - \\#30070  \no FLEXBONE® HEAT Non-Programmable Thermostat - \\#30072  \no FLEXBONE® HEAT Power Module - \\#30074  \nPreparation  \nMaterials: Deliver all material to the jobsite in the original, unopened packaging under proper storage conditions.  \nIt is the responsibility of the installation contractor to inspect the ARDEX FLEXBONE HEAT for visual defects and to verify that it is the correct type before beginning the installation.  \nAcclimate the setting material, ARDEX FLEXBONE HEAT and tile or stone in an enclosed building at a minimum of 65°F (18°C) for at least 24 - 48 hours before the installation. If possible, lay out the ARDEX FLEXBONE HEAT during acclimation.  \nFloor Plan  \nPreparation of a preinstallation plan showing the position of the heating cables, the floor sensor and the cold conductor cable system components as well as a subdivision into  \nheating circuits is highly recommended. To register for the ARDEX FLEXBONE®  \nHEAT System Warranty, please fill out and submit the Installation Worksheet and Warranty Validation Form located on the ARDEX FLEXBONE HEAT product page or within the c","cbCaiiFPR6gfsF1m","https://ap.wps.com/l/cbCaiiFPR6gfsF1m","pdf",2677871,"English","# Description and Usage\n## For Use Indoors on the Following Substrates\n## Suitable Uses\n## Recommended Tools\n## Accessories\n## Preparation\n## Floor Plan\n## Substrate Preparation","[{\"question\":\"What is ARDEX FLEXBONE® HEAT used for?\",\"answer\":\"It is an electrical in-floor heating system for tile or stone installations. The mat can provide heating and also be used as a waterproofing layer in wet areas.\"},{\"question\":\"How does FLEXBONE® HEAT improve heating performance?\",\"answer\":\"Its unique crossbones pattern reduces touch points and air space within the mat, enabling faster and more efficient heating of the floor covering.\"},{\"question\":\"Where can ARDEX FLEXBONE® HEAT be installed and what should be avoided?\",\"answer\":\"It is intended for indoor use on substrates such as concrete, wood, and gypsum. Do not install electrical heating cables under vanities, showers, bathtub platforms, cabinets, islands, solid counters, or in closets, and avoid running cables under walls or heating more than one room with an individual cable.\"}]","ARDEX FLEXBONE® HEAT - In-Floor Heating Systems - Description and Usage | PDF",23]