Refractory Castables
Refractory Castables includes RCAST refractory concrete and gunning materials available in our store. This collection is organized by product grade and package size so customers can choose the right material for furnace, kiln, fireplace, stove, and other high-temperature lining or repair applications.
The collection includes RCAST-45, RCAST-45G, RCAST-52, and RCAST-62SP in the available packaging formats, including small repair packs, 33 lb bags, large 660 lb bags, and marketplace SKU versions where applicable.
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RTH-USA RCAST-62SP Low Cement Refractory Concrete 33 lb
RTH-USA RCAST-52 Medium Cement Refractory Concrete 33 lb
RTH-USA RCAST-45G Medium Cement Refractory Gunning Concrete 33 lb
RTH-USA RCAST-45 Medium Cement Refractory Concrete 33 lb
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.
RTH-USA MORTACLAY-40d Fireclay Refractory Mortar 50 lb
RTH-USA RB-40 Fireclay Refractory Bricks (box of 6)
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.
