Do I Need A New Chimney Liner?

The chimney liner is a vital component that significantly reduces the risk of fire and carbon monoxide poisoning when using your fireplace, stove, or any gas or wood-burning heating appliance. When you ignite the fireplace, the combustion process releases smoke and chemical byproducts. With its smooth surface, the liner protects the flue and efficiently expels these contaminants at the top of the chimney. 

However, like any part of your home, chimney liners are subject to wear and tear. Factors such as age, consistent exposure to high temperatures, and moisture intrusion can lead to deterioration. Liners can develop cracks, corrosion, and even fire damage, compromising their protective properties and potentially allowing dangerous gases or heat transfer to combustible materials in your home. This is when repair or a complete replacement becomes a critical choice.

How Long Do Chimney Liners Last?

A chimney liner’s lifespan can range from less than five years to over fifty, depending on its material, fuel type, frequency of use, and maintenance. Clay tile liners are the most common, especially in older homes. With proper care, these liners can last for decades. However, they are susceptible to cracking and blistering from thermal shock (rapid temperature changes), moisture intrusion and condensation, and can be severely damaged by chimney fires. If you notice bits of clay or mortar in the firebox, it’s time to have a professional chimney sweep inspect your chimney liner. 

When Your Chimney May Need Relining

One question homeowners frequently ask is Do I need a new chimney liner? Several signs may point in the direction that your chimney liner may be compromised and require attention, such as:

• Visible Cracks or Deterioration: Visible cracks, gaps, corrosion, or crumbling sections in the liner are clear indicators of damage. 
• Foul Odors: A persistent smoky or asphalt-like smell emanating from your fireplace, even when not used, can indicate creosote buildup or liner damage.
• Drafting Problems: Having difficulty lighting or maintaining a fire can be due to liner deterioration.
• Evidence of Soot or Smoke Outside the Flue: If you see soot stains or smell smoke in areas of your home near the chimney, it could be due to a small chimney fire. It’s a serious sign of a potentially damaged liner that requires an immediate inspection before using the heating appliance.
• Changing Appliance Type: If you’re switching from a wood-burning appliance to a gas appliance (or vice-versa) or installing a new, more efficient heating appliance, the existing liner may not be appropriately sized or rated for the new appliance, necessitating a replacement that matches the manufacturer’s specifications.

Thermocrete® Is Like a New Chimney Liner, Only Better

Whether your chimney liner needs repair or relining, Thermocrete does both in one cost-effective application. This proprietary spray-on ceramic coating from Approved Industries forms a durable, seamless, insulating layer, creating a “new” liner within the flue. Its unique properties allow it to withstand extremely high temperatures, prevent corrosion, and provide superior insulation, which can improve the efficiency of your heating appliance and further reduce creosote buildup. This comprehensive protection is backed by a lifetime warranty when applied by a factory-authorized technician and proper maintenance, including annual inspections.

Where to Buy Thermocrete® Chimney Liners

If you need a new chimney liner, Thermocrete is an exceptional choice. Enjoy a safer fire-burning experience with the durable chimney liner that outperforms steel and has a lifetime warranty. It’s important to note that Thermocrete is available exclusively for professional installation. This ensures that the application performs correctly and safely, maximizing its effectiveness. Contact us today to find an Approved Industries certified installer near you.