Super Duty Refractory Mortar | Dry Heat-Set, 2900°F, 55 lb Bag

BrickWood Super Duty Refractory Mortar (Dry Heat-Set) is a dry, heat-setting, high-alumina mortar for laying fire brick in kilns, furnaces, forges and other industrial high-heat equipment. It is rated for service up to 2,900°F and ships as a 55 lb bag of dry mix. Rated to 2,900°F Super duty, high-alumina formula (about 47% alumina) Dry mix: add clean water (about 20 to 25% by weight) and mix No flow, cracks or shrinkage in testing at 2,910°F Coverage: about 250 to 400 lb per 1,000 standard fire bricks, depending on joint type Size: 55 lb bag For professional and industrial use. Heat-setting mortar develops its full bond only at kiln-level temperatures, so it is not for DIY or outdoor pizza ovens. For outdoor builds, use our Refractory Mortar.Minimum order of 2. FREE shipping to the contiguous United States. Refractory products are non-refundable once shipped.