Heat Shield Formula 51 - An Insulating Refractory for Parging Smoke Chambers



HeatShield Formula 51 is an insulating, high-temperature refractory mortar, developed specifically for parging smoke chamber walls. (The smoke chamber is above the damper and below the flue.) When properly applied, it will restore the integrity of your fireplace. This dry mix product product will insulate, seal gaps, and smooth the smoke chamber walls as required by both NFPA and IRC codes. Available in a 30 lb.  pail.  Mix 3 ½ quarts of water per half bucket to start. (Or start with 6 quarts in a large mixing tub and mix the full bucket).  Be sure to  must mix/shake the dry contents of the container before dividing them into two separate containers.  

  • UL Listed  (Smoke chamber surfacing materials MH64629)

  • Insulates Fireplace Smoke Chambers for Added Safety

  • Smoothes Jagged Edges and Corbels and Reshapes Smoke Chambers for Increased Performance

  • Insulates from Heat or Cold

  • Sticks to Most Anything

NOTE: Not suitable for food storage or food preparation areas. Meets ASTM C-199 (Medium Duty) and is non water-soluble when dry. Wear goggles, gloves and a mask.  Shipping is FREE (contiguous US only).

WARNING: This product can expose you to chemicals including quartz and titanium dioxide, which are known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

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