Tenon Refractory Mortar – High Temperature Mix (Up to 2550°F) – 10 lb

Tenon Refractory Mortar is a white, high temperature blend engineered for demanding masonry spaces such as fireplaces, fire pits, chimneys, and brick or clay walls. Preblended and ready to mix with water, it helps you move from prep to placement with minimal guesswork while delivering consistent consistency during application.

Versatile indoor and outdoor applications

This mortar is designed for both indoor and outdoor use. It performs well around the inner surfaces of fireplaces, around fire pit rings, barbecues, pizza ovens, and chimney work. You can also use it for parging a smoke chamber or setting clay flue liners, giving you a reliable option for several common masonry tasks. The white color provides a clean, neutral finish that can blend with many brick tones or masonry styles.

Practical use features you can rely on

• READY TO USE: Preblended, just add water and go.
• INDOOR OR OUTDOOR: Suitable for fireplaces, fire pits, barbecues, pizza ovens, and chimney work including parging and liner setting.
• EFFICIENT WORKING TIME: About 1 hour of working time before hardening begins.

In addition to ease of use, the mortar offers durability after cure. It becomes water insoluble and acid resistant, which helps it hold up in heat-exposed environments and resist common exposure elements. The combination of high heat tolerance (up to 2550°F) and a hardening profile provides a solid foundation for permanent installations while allowing you to adjust and finish joints with confidence before set.

Standards and expectations

ASTM C199 certification aligns with many building code requirements for firebrick and flue installations in chimneys and masonry fireplaces. While performance depends on proper surface prep and installation details, the product is designed to support reliable workmanship in high-temperature settings with a clean white finish that remains visually tidy over time.

Whether you are refreshing an existing fireplace or laying out a new outdoor cooking area, Tenon Refractory Mortar offers a ready-to-use, versatile option backed by practical performance details that address common remodeling needs. While results can vary with conditions, the blend is intended to help you achieve durable joints, consistent texture, and a professional-looking finish without complicated mixing steps.