HeatShield® Restores Your Chimney
HeatShield® is a specially formulated “Cerfractory®” sealant material that restores the integrity of your chimney’s flue to vent hazardous flue gases from your home. It eliminates the dangers in your chimney caused by gaps, cracks, and spalling for years to come. By using either the Repair System or the CeCure® Sleeve Relining System (depending on the defects found) your chimney will be restored to its original peak level of safety and efficiency.
Chimney Repair Systems
To repair chimney interiors, one of three methods are used. The Joint Repair System is used for chimneys that only require repair of defective mortar joints. The Resurfacing System is used to repair mortar joints and other minor defects in tile lined flues. In chimneys with more serious defects or unlined chimneys, HeatShield® can be used with the CeCure® Sleeve Relining System.
Joint Repair System
With our Joint Repair system, your chimney is fixed right, the first time.
First, a special foam applicator blade is custom made to fit your chimney. The applicator tool is then positioned below each gap or void.
The HeatShield® Cerfractory® Flue Sealant mixture is added. Each void in your flue is filled as the HeatShield® mixture is extruded into the void by the tool. Your repaired void is made smooth as the tool is pulled upward.
Drag the sliders left to right to compare the chimney liners before and after HeatShield Joint Repair applications.
For chimneys with cracked or spalled flues that are otherwise sound, the Resurfacing System is used to apply a coating over the entire flue. Cameras are used to verify repairs.
To restore your chimney’s flue by resurfacing the interior, a custom made foam applicator plug is placed at the bottom of the flue and attached to a winch on top the chimney.
First, a “tie coat” material is applied to the flue walls as the plug is pulled upward by the winch. The “tie coat” cleans any remaining dust in your flue and acts as a primer for the HeatShield® Cerfractory® Flue Sealant.
After the tie coat dries, the HeatShield® material is then applied onto the flue at a thickness of about ¼” with the foam plug as it is pulled upward by the winch. This unique application method is known as “slip casting” or “slip cast extrusion”.
Your professional HeatShield® Installer then verifies that your newly restored chimney is completely sealed and smoke-tight by video scanning your completed repair.
Drag the sliders left to right to compare the chimney liners before and after HeatShield resurfacing.
CeCure® Sleeve Relining System
In chimneys with more serious defects or unlined chimneys, HeatShield® can be used with the CeCure® Sleeve Relining System. The CeCure® Sleeve is a thin profile, ceramic insulation, reinforced with stainless steel fabric that is sandwiched between two coats of HeatShield® Cerfractory® Flue Sealant.
To reline your chimney with the HeatShield® CeCure® Sleeve Relining System (patent pending), an applicator plug is placed at the bottom of the flue and attached to a winch at the top of the chimney.
First, a coating of HeatShield® Cerfractory® Flue Sealant (with an added drying accelerator) is applied to the flue walls as the applicator plug is pulled upwards by the winch.
Second, a custom fitted, “CeCure® Sleeve” is lowered into the chimney and mechanically attached to the top of the chimney. The CeCure® Sleeve is a high density, low profile, ceramic insulation sleeve which has been reinforced with a special stainless steel fabric.
The applicator plug is then pulled downward through the CeCure® Sleeve to press it firmly into the first coating of HeatShield® Cerfractory® Flue Sealant with the added drying accelerator.
With the applicator plug at the bottom of the CeCure® Sleeve, the sleeve is temporarily clamped into place.
Lastly, another coating of HeatShield® Cerfractory® Flue Sealant is applied over the CeCure® Sleeve. Your HeatShield® Installer will then use a video camera to verify that the CeCure® Sleeve has been completely coated, ensuring the integrity of your newly relined chimney.
HeatShield® Takes the "Heat" So You Don't Have To
Developed in Europe over 20 years ago, HeatShield’s® Cerfractory® technology is a hybrid (ceramic/refractory) coating and is proven effective both in use and by independent lab testing.
As a repair, it’s been proven to withstand moisture, corrosive flue gases, and temperatures in excess of 2900°F. It’s rated a “Super-Duty” refractory mortar per ASTM (American Society for Testing and Materials) C199. It surpasses both National Fire Prevention Association (NFPA) and International Residential Code (IRC) which require only a “Medium-Duty” refractory mortar for use in fireplaces and chimneys.
It is an approved “all fuel” chimney liner and listed to UL 1777 by Warnock Hersey with the addition of the CeCure® Sleeve. To learn more about HeatShield’s® extensive testing, listing, and certification visit HeatShield® technology and testing.
Your Chimney Expertly Repaired
Independent HeatShield® Installers are carefully selected based on their industry certifications and experience. Armed with factory training and specially designed tools, your HeatShield® professional can expertly repair your chimney. Special video cameras are used to verify completed repairs. Click here to find a factory trained HeatShield Installer.
Economical and Environmentally Friendly
HeatShield® is an “eco friendly” product made from recycled and naturally occurring materials. HeatShield® offers you and your chimney professional a less costly alternative to rebuilding your chimney or the destructive removal of flue tiles before the chimney can be relined.
20 Year Limited Warranty
Whether your chimney requires repair or relining, HeatShield® is covered by a 20-year material warranty. Ask your HeatShield® professional for details.