Refractory Mortars
Refractory 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.
MORTACLAY-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.
3 products
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MORTACLAY-40d Mortar 50 lb
RTH-USA UNIREF-40 Ready-to-Use Refractory Mortar 44 lb
RTH-USA UNIREF-40 Ready-to-Use Refractory Mortar - 10 fl.oz.
Your Warmth, Our Care
Everything your fireplace needs – in one place. Whether you are building a brand-new fireplace, upgrading an existing one, or repairing what time and heat have worn down, we provide the right solutions to make the job easier and the results more reliable. From ready-to-use mortars like UNIREF-40, to high-performance fireclay mortars such as MORTACLAY-40d, and durable firebricks like RB-40, you’ll find professional-grade products designed to withstand extreme temperatures and deliver long-lasting performance. But our selection doesn’t end there – we offer a wide range of refractory materials, repair solutions, and accessories to fit projects of every size.
RTH-USA UNIREF-40 Ready-to-Use Refractory Mortar - 10 fl.oz.
MORTACLAY-40d Mortar 50 lb
Built for Performance
Designed for Simplicity
With our products you can be confident that your fireplace or stove won’t just look good, but will also remain safe, efficient, and strong for years to come. Easy to use, engineered for durability, and available in practical package sizes, our lineup makes fireplace construction and repair straightforward – whether you are a professional builder or a homeowner tackling a personal project.
Because when it comes to warmth, comfort, and peace of mind, every detail matters – and we’ve got you covered.
