In East Hartford, CT, this fireplace’s venting system was found to be damaged, with patchwork made of brick and cement that allowed heat, smoke, and embers to bypass the system, leading to further deterioration. To ensure safe venting and prevent future failures, we applied a high-temperature refractory cement heat shield, which encases the flue and is rated for 2,900 degrees, offering long-term protection with a 20-year warranty.