Chimney Liner Strength & Repair Is Possible With HeatShield®

Most older chimneys are lined with clay or terra cotta tiles, which are strong, heat-resistant, and long-lasting. But even durable clay liners can undergo damage and develop holes, cracks, or rough surfaces after years of exposure to the high temperatures and acidic byproducts created by the fire. Another common contributor to clay liner damage is moisture. If a chimney is uncapped or a chimney leak allows moisture down into the liner, rain, sleet, and snow can eat away at the clay or terra cotta, causing deterioration, cracks, and holes.

In years past, once clay tile liners developed cracks and holes, they simply needed to be replaced, which was often costly and messy. But thanks to HeatShield®, a revolutionary product and flue sealant, homeowners now have another restorative option.

How Does HeatShield® Restore Chimneys?

The HeatShield® product is a mixture of ceramic and refractory materials, which makes it incredibly insulating, strengthening, and long-lasting in the face of heat and corrosive byproducts. Depending on the needs of your particular chimney, one of the following HeatShield® applications will be chosen: 

  • Joint Repair – The joints between the clay tiles of your liner are especially vulnerable to damage and deterioration with time. But with HeatShield®’s joint repair system, damaged joints can be quickly and effectively repaired. We simply place a specialized foam applicator tool just below the joint in need of repair, apply the HeatShield® flue sealant, and use the applicator tool to smooth and fill. When we’re finished, we check our work with a video scan to ensure that the joints have been effectively repaired and are left smooth and seamless.
  • Resurfacing – If your entire flue could use some repair work, HeatShield® also offers a resurfacing option. We start by placing a customized foam applicator tool at the bottom of the flue and applying a “tie coat” or prep coat. Once the prep coat dries, we apply the HeatShield® flue sealant, using the applicator tool to smooth the surface from bottom to top. When we’re finished, we check the flue from top to bottom to make sure all holes, cracks, and gaps are filled and that the results are smooth and seamless.
  • Relining – When damage is more extensive and you need extra strength, insulation, and support, the HeatShield® CeCure sleeve relining option may be right for you. Like the resurfacing option, this involves the cerfractory flue sealant, but has the added benefit of a stainless steel fabric reinforced ceramic sleeve. We start by placing the applicator tool at the base of the flue and applying a coat of HeatShield® flue sealant. Next, we insert the CeCure sleeve into the flue and secure it in place. Then, we add a coat of the HeatShield® flue sealant to the CeCure sleeve. As always, we check our work with a video camera to ensure that the application was successful.
HeatShield restores resurfacing relining - looking up chimney
HeatShield chimney relining

Is It Time To Have Your Chimney Repaired With HeatShield®?

Have you had your flue liner evaluated for safety and efficiency? If not, it’s time to give The Chimney Guy a call at 920-830-1920. We’ll inspect your flue and let you know whether you have any damage that can be restored by HeatShield®. Request an appointment today to make sure your chimney is in great shape and working as safely and as efficiently as it should this winter!

Stainless steel chimney liners provide long-lasting protection and performance, so ask us for more information about this durable chimney lining option today.