HeatShield Chimney Liner Repair

At the Irish Sweep, we pride ourselves on doing the highest quality work. We accomplish this through having excellent training and experience, but also through using top quality materials. One of the truly remarkable materials we use is HeatShield cerfractory flue sealant for resurfacing flues.

According to the Chimney Safety Institute of America, problems such as gaps, cracks and spalling in your chimney’s flue can present serious risks to your home and family, because your chimney can no longer perform its intended function – to safely contain and vent the products of combustion to the outside. It’s because of this that the inner surface of your flue is so important.

HeatSheild is a durable coating applied by experts, like us at the Irish Sweep, to restore safety and efficiency to your chimney’s flue by filling in gaps and cracks. This can salvage a chimney flue that would otherwise have needed removed and rebuilt or retired.

The key to a safe chimney is a flue that properly contains dangerous gases, heat and flames. The rest of your home isn’t a safe place for these elements to be, and your flue is the barrier that protects you. But only until it weakens and develops cracks, spalled clay, and deteriorated mortar. This used to mean the end of life for a flue, but HeatSheild allows us to renew your flue safely.

 

How Does HeatShield Sealant Work?

To start restoring your chimney’s flue by resurfacing the interior, we make a custom foam applicator plug. It’s then placed at the bottom of the flue, attached to a winch on top the chimney. When the applicator it pulled up with the winch, it evenly applies the lining to flue.

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, we apply the HeatShield® material to the flue at about ¼” thickness. Our unique application method is known as “slip casting” or “slip cast extrusion”.

We then verify that your new chimney lining has a complete seal and is smoke-tight by using cameras and video scanning your completed repair.

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