{"title":"Refractory Mortars","description":"\u003cp\u003eRefractory Mortars includes MORTACLAY-40d and UNIREF-40 refractory mortars available in our store. This collection is organized by packaging size so customers can quickly choose the right option for laying firebricks, repairing joints, and working with heat-resistant linings in fireplaces, stoves, furnaces, kilns, and other high-temperature applications.\u003c\/p\u003e\u003cp\u003eMORTACLAY-40d is a fireclay refractory mortar supplied in a larger bag format for masonry and repair work. UNIREF-40 is a ready-to-use refractory mortar available in multiple package sizes for convenient brick laying and localized repairs.\u003c\/p\u003e","products":[{"product_id":"uniref-40-ready-to-use-refractory-mortar-10-fl-oz","title":"RTH-USA UNIREF-40 Ready-to-Use Refractory Mortar - 10 fl.oz.","description":"\u003cp\u003e\u003cstrong\u003eUNIREF-40\u003c\/strong\u003e is a refractory mortar solution specially created for laying refractory bricks. It can be operated at a temperature of up to 1600 C. It is also suitable for lining repairs. Refractory mortar \u003cstrong\u003eUNIREF-40\u003c\/strong\u003e is supplied ready for use. After curing, this refractory product provides a monolithic connection of the brickwork structure. This mortar is the best choice for projects that use firebricks. Due to the set of characteristics, \u003cstrong\u003eUNIREF-40\u003c\/strong\u003e mortar is a universal solution.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003ch2 class=\"a-size-base-plus a-text-bold\"\u003eKey features:\u003c\/h2\u003e\n\u003cul class=\"a-unordered-list a-vertical a-spacing-mini\"\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e\u003cstrong\u003eHigh Plasticity Formula:\u003c\/strong\u003e Ensures easy application and superior adhesion for laying refractory bricks.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e\u003cstrong\u003eLow Shrinkage:\u003c\/strong\u003e Minimizes cracking after drying and firing, guaranteeing long-term durability.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e\u003cstrong\u003eExtreme Temperature Resistance:\u003c\/strong\u003e Operates at temperatures up to 1600°C (2910°F), ideal for industrial and residential high-heat applications.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e\u003cstrong\u003eSuperior Chemical Resistance:\u003c\/strong\u003e Protects structures against corrosive gases and harsh thermal environments.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e\u003cstrong\u003eLow Gas Permeability: \u003c\/strong\u003eImproves energy efficiency and thermal insulation in firebrick structures.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e\u003cstrong\u003eReady-to-Use Convenience: \u003c\/strong\u003ePre-mixed and air-bonded, no additional preparation needed - just apply directly from the tube.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"wf-automatic-savings-note\"\u003e\n\u003ch3\u003eAutomatic savings at checkout\u003c\/h3\u003e\n\u003cp\u003eOrders over $300 receive 2% off automatically. Sign in or create an account before checkout to receive 1% off, or 3% off on orders over $300.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/en-eu\/account\/login\"\u003eSign in or create an account\u003c\/a\u003e before checkout to unlock registered customer savings.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Refractory Trading House","offers":[{"title":"Default Title","offer_id":43284262846582,"sku":"B0FHWXZ1MG","price":29.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0650\/2573\/6822\/files\/uniref-40-ready-to-use-refractory-mortar-10-fl-oz-B0FHWXZ1MG-1.png?v=1756999755"},{"product_id":"uniref-40-ready-to-use-refractory-mortar-74-fl-oz-pail-for-firebrick-lining-and-repair-high-plasticity-low-shrinkage-chemical-and-thermal-resistance-up-to-1600-c-2910-f","title":"RTH-USA UNIREF-40 Ready-to-Use Refractory Mortar – 74 fl.oz.","description":"\u003cp\u003eUNIREF-40 is a gray refractory mortar solution specially created for laying refractory bricks. It can be operated at a temperature of up to 1600 C. It is also suitable for lining repairs. Refractory mortar UNIREF-40 is supplied ready for use. After curing, this refractory product provides a monolithic connection of the brickwork structure. This mortar is the best choice for projects that use firebricks. Due to the set of characteristics, UNIREF-40 mortar is a universal solution.\u003c\/p\u003e","brand":"Refractory Trading House","offers":[{"title":"Default Title","offer_id":42441953738870,"sku":"J6-JU4I-1ZSB","price":44.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0650\/2573\/6822\/files\/photo_2025-07-16_08.20.01.png?v=1754571404"},{"product_id":"mortaclay-40d-fireclay-refractory-mortar-50-lb","title":"MORTACLAY-40d Mortar 50 lb","description":"\u003cp\u003eMORTACLAY-40d is a high-performance fireclay refractory mortar for laying, bonding, and repairing firebrick in fireplaces, pizza ovens, kilns, furnaces, fireboxes, and other high-temperature masonry projects. This 50 lb dry mix is made from primary refractory raw materials and develops a strong ceramic bond after proper firing.\u003c\/p\u003e\n\n\u003cdiv class=\"wf-automatic-savings-note\"\u003e\n  \u003ch3\u003eAutomatic savings at checkout\u003c\/h3\u003e\n  \u003cp\u003eOrders over $300 receive 2% off automatically. Sign in or create an account before checkout to receive 1% off, or 3% off on orders over $300.\u003c\/p\u003e\n  \u003cp\u003e\u003ca href=\"\/en-eu\/account\/login\"\u003eSign in or create an account\u003c\/a\u003e before checkout to unlock registered customer savings.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eQuick specs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial type:\u003c\/strong\u003e dry fireclay refractory mortar\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage size:\u003c\/strong\u003e 50 lb bag\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature use:\u003c\/strong\u003e high-temperature refractory masonry, up to 3000°F when used as directed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e add clean water and mix to a workable mortar consistency\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBest for:\u003c\/strong\u003e firebrick joints, masonry repairs, refractory linings, ovens, fireplaces, kilns, and furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to choose it\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse MORTACLAY-40d when you need a dry mortar for setting or repairing refractory brick.\u003c\/li\u003e\n  \u003cli\u003eFor small patching or ready-to-use adhesive work, R-Mort or R-CEM may be easier to apply.\u003c\/li\u003e\n  \u003cli\u003eCoverage depends on brick size, joint thickness, and the condition of the surface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping note\u003c\/h3\u003e\n\u003cp\u003eThis is a heavy refractory material, and shipping cost can vary by destination. Use the cart shipping preview before checkout. For larger quantities or orders over 700 lb, please review our \u003ca href=\"\/en-eu\/pages\/shipping-bulk-orders\"\u003eShipping \u0026amp; Bulk Orders\u003c\/a\u003e page or contact us before placing the order.\u003c\/p\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this ready to use?\u003c\/strong\u003e\u003cbr\u003eNo. This is a dry mix. Add clean water and mix before application.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used with firebricks?\u003c\/strong\u003e\u003cbr\u003eYes. It is designed for refractory masonry and firebrick work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I buy multiple bags?\u003c\/strong\u003e\u003cbr\u003eYes. For heavy or bulk orders, contact us so we can help check the best shipping option.\u003c\/p\u003e","brand":"Refractory Trading House","offers":[{"title":"Default Title","offer_id":43283879460982,"sku":"B0DTM7Y64Q","price":37.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0650\/2573\/6822\/files\/mortaclay-40d-fireclay-refractory-mortar-50-lb-1-B0DTM7Y64Q-2-2.png?v=1756990786"},{"product_id":"uniref-40-ready-to-use-refractory-mortar-44-lb","title":"RTH-USA UNIREF-40 Ready-to-Use Refractory Mortar 44 lb","description":"\u003cp\u003eUNIREF-40 is a gray refractory mortar solution specially created for laying refractory bricks. It can be operated at a temperature of up to 1600 C. It is also suitable for lining repairs. Refractory mortar UNIREF-40 is supplied ready for use. After curing, this refractory product provides a monolithic connection of the brickwork structure. This mortar is the best choice for projects that use firebricks. Due to the set of characteristics, UNIREF-40 mortar is a universal solution.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShipping note:\u003c\/strong\u003e This is a heavy refractory material, and shipping cost can vary by destination. For larger quantities or if shipping looks high at checkout, please review our \u003ca href=\"\/en-eu\/pages\/shipping-bulk-orders\"\u003eShipping \u0026amp; Bulk Orders\u003c\/a\u003e page or contact us before placing the order.\u003c\/p\u003e\u003cdiv class=\"wf-automatic-savings-note\"\u003e\n\u003ch3\u003eAutomatic savings at checkout\u003c\/h3\u003e\n\u003cp\u003eOrders over $300 receive 2% off automatically. Sign in or create an account before checkout to receive 1% off, or 3% off on orders over $300.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/en-eu\/account\/login\"\u003eSign in or create an account\u003c\/a\u003e before checkout to unlock registered customer savings.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Refractory Trading House","offers":[{"title":"Default Title","offer_id":43284263141494,"sku":"B0DWGTWC2C","price":96.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0650\/2573\/6822\/files\/uniref-40-ready-to-use-refractory-mortar-44-lb-B0DWGTWC2C-1_00fb0117-c5e6-452e-9671-cf58e1cfe6a0.png?v=1778766319"},{"product_id":"mortaclay-40d-mortar-30-lb","title":"RTH-USA MORTACLAY-40d Mortar 30 lb","description":"\u003cp\u003eMORTACLAY-40d is a high-performance fireclay refractory mortar for laying, bonding, and repairing firebrick in fireplaces, pizza ovens, kilns, furnaces, fireboxes, and other high-temperature masonry projects. This 30 lb dry mix is made from primary refractory raw materials and develops a strong ceramic bond after proper firing.\u003c\/p\u003e\n\u003cdiv class=\"wf-automatic-savings-note\"\u003e\n\u003ch3\u003eAutomatic savings at checkout\u003c\/h3\u003e\n\u003cp\u003eOrders over $300 receive 2% off automatically. Sign in or create an account before checkout to receive 1% off, or 3% off on orders over $300.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/en-eu\/account\/login\"\u003eSign in or create an account\u003c\/a\u003e before checkout to unlock registered customer savings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eQuick specs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial type:\u003c\/strong\u003e dry fireclay refractory mortar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage size:\u003c\/strong\u003e 30 lb bag\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature use:\u003c\/strong\u003e high-temperature refractory masonry, up to 3000°F when used as directed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e add clean water and mix to a workable mortar consistency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest for:\u003c\/strong\u003e firebrick joints, masonry repairs, refractory linings, ovens, fireplaces, kilns, and furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to choose it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse MORTACLAY-40d when you need a dry mortar for setting or repairing refractory brick.\u003c\/li\u003e\n\u003cli\u003eFor small patching or ready-to-use adhesive work, R-Mort or R-CEM may be easier to apply.\u003c\/li\u003e\n\u003cli\u003eCoverage depends on brick size, joint thickness, and the condition of the surface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping note\u003c\/h3\u003e\n\u003cp\u003eThis is a heavy refractory material, and shipping cost can vary by destination. Use the cart shipping preview before checkout. For larger quantities or orders over 700 lb, please review our \u003ca href=\"\/en-eu\/pages\/shipping-bulk-orders\"\u003eShipping \u0026amp; Bulk Orders\u003c\/a\u003e page or contact us before placing the order.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this ready to use?\u003c\/strong\u003e\u003cbr\u003eNo. This is a dry mix. Add clean water and mix before application.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used with firebricks?\u003c\/strong\u003e\u003cbr\u003eYes. It is designed for refractory masonry and firebrick work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I buy multiple bags?\u003c\/strong\u003e\u003cbr\u003eYes. For heavy or bulk orders, contact us so we can help check the best shipping option.\u003c\/p\u003e","brand":"Refractory Trading House","offers":[{"title":"Default Title","offer_id":44181157314678,"sku":"B0HGLT56BV","price":33.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0650\/2573\/6822\/files\/photo_2026-08-2612.25.05.png?v=1789370797"},{"product_id":"rth-usa-uniref-40-ready-to-use-refractory-mortar-74-fl-oz","title":"RTH-USA UNIREF-40 Ready-to-Use Refractory Mortar 74 fl.oz.","description":"\u003cp\u003eUNIREF-40 is a gray refractory mortar solution specially created for laying refractory bricks. It can be operated at a temperature of up to 1600 C. It is also suitable for lining repairs. Refractory mortar UNIREF-40 is supplied ready for use. After curing, this refractory product provides a monolithic connection of the brickwork structure. This mortar is the best choice for projects that use firebricks. Due to the set of characteristics, UNIREF-40 mortar is a universal solution.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShipping note:\u003c\/strong\u003e This is a heavy refractory material, and shipping cost can vary by destination. For larger quantities or if shipping looks high at checkout, please review our \u003ca href=\"\/en-eu\/pages\/shipping-bulk-orders\"\u003eShipping \u0026amp; Bulk Orders\u003c\/a\u003e page or contact us before placing the order.\u003c\/p\u003e\u003cdiv class=\"wf-automatic-savings-note\"\u003e\n\u003ch3\u003eAutomatic savings at checkout\u003c\/h3\u003e\n\u003cp\u003eOrders over $300 receive 2% off automatically. Sign in or create an account before checkout to receive 1% off, or 3% off on orders over $300.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/en-eu\/account\/login\"\u003eSign in or create an account\u003c\/a\u003e before checkout to unlock registered customer savings.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Refractory Trading House","offers":[{"title":"Default Title","offer_id":44181224194166,"sku":"B0FHWYK4J6","price":44.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0650\/2573\/6822\/files\/photo_2026-08-2612.25.20.jpg?v=1789371968"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0650\/2573\/6822\/collections\/mortars.png?v=1779848864","url":"https:\/\/wefractory.com\/en-eu\/collections\/refractory-mortars.oembed","provider":"Wefractory","version":"1.0","type":"link"}