HeatShield Cerfractory Flue Sealant

A thorough inspection of your chimney liner may reveal hidden dangers. To choose an effective, economical solution you should know how your chimney works, and understand the fire & health risks these dangers can cause.

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.

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.

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.

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.

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.

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, 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.