Thermocrete® stands out as a cost-effective and exceptionally durable alternative for repairing and restoring masonry chimney flues in both residential and commercial buildings. Its unique combination of affordability and longevity makes it a superior choice in the market.
Thermocrete® is a cost-effective and durable solution for repairing and restoring masonry chimney flues in residential and commercial properties. This innovative spray-on ceramic liner is applied by factory-trained professionals certified by Approved Industries. The cerfractory coating dries into a smooth, impervious barrier that is exceptionally resistant to creosote, corrosion, and acidic damage—the primary threats conventional liners face. Thermocrete® reduces fire risks, limits exposure to harmful carbon monoxide emissions, and provides a range of benefits for chimney sweeps, fireplace installers, and property owners alike.
Enhanced Safety
- Reduces Fire Risk: Thermocrete® is not just a repair Solution; it's a safety enhancement. By significantly reducing the risk of chimney fires, it provides a level of safety that is unmatched by other products, giving peace of mind to commercial and residential property owners.
- Minimizes Carbon Monoxide Exposure: A well-maintained chimney with a durable Thermocrete® liner is more heat resistant than other liners, reducing the damaging effects that could leak harmful carbon monoxide into a home or building.
Improved Performance
- Enhanced Airflow: The smooth surface of Thermocrete® significantly improves airflow within the chimney flue, leading to more efficient combustion of solid and fossil fuel heating appliances.
- Increased Heating Efficiency: Improved airflow translates to better heating efficiency of fireplaces, furnaces, and other attached appliances, potentially reducing fuel consumption.

Installation and Cost-Effectiveness
- Quick and Clean Installation: Thermocrete® can be applied quickly and cleanly without any messy cleanup or chimney modifications.
- Cost-Effective Solution: Thermocrete® is typically less expensive than other liner repair and restoration methods, making it a budget-friendly option.
- Doesn’t Require Removal of Damaged Liner: Thermocrete® can be applied over existing liners without requiring costly and time-consuming flue tile removal.
- Easier Maintenance: The smooth surface of Thermocrete® makes it easier for chimney professionals to maintain with regular inspections and sweeping, allowing for early detection and resolution of any potential issues.
- Lifetime Warranty: Thermocrete® is backed by a lifetime warranty, providing peace of mind and long-term protection for the purchaser’s investment.
Durability and Longevity
- Suitable for ALL Flues: Thermocrete® is compatible with all flue types, including an offset chimney, providing versatility for all types of heating appliances, such as furnaces, boilers, fireplaces, and stoves.
- Corrosion Resistance: Thermocrete® is highly resistant to corrosion from acids, sulfates, and other corrosive elements commonly found in chimney environments, safeguarding against acid attack.
- Long-lasting Protection: Its exceptional durability ensures long-lasting protection for your chimney flue, minimizing the need for frequent repairs and replacements.
- Seals All Gaps and Cracks: The cerfractory coating effectively seals all gaps and cracks within the flue, preventing moisture intrusion and improving overall performance.
- No Modifications Required: Thermocrete® application doesn’t effectively reduce flue size, ensuring continued efficient operation of existing heating appliances.
Where to Buy Thermocrete® Near Me
Transform chimney flues with a heat—and corrosion-resistant ceramic coating by Approved Industries. Thermocrete is for professional use only by chimney sweeps, repair technicians, and fireplace installers.
For Chimney Companies:
Interested in offering Thermocrete® to your customers? Reach out to us to discuss partnership opportunities and wholesale pricing.
For Homeowners:
Attention homeowners! Approved Industries offers a heat—and corrosion-resistant ceramic coating to revitalize your chimney flues. Please note that Thermocrete® is exclusively for professional use by factory-authorized chimney sweeps, repair technicians, and fireplace installers.
Click here to find an approved Thermocrete® installer.