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How HeatShield Works

Does your chimney liner need some work? A chimney with a damaged or missing liner will not work properly and will be unsafe. This is because the liner is a necessary barrier that offers protection to the masonry, to the home, and to the fire. It’s like skin, covering a large space and doing an important job. The liner keeps the heat, gas, and corrosive byproducts of the fire in the chimney, prevents heat from moving through the masonry and damaging important building components of the home, and protects the masonry from corrosive chemicals from the fire. When the liner becomes worn and damaged over time and use, it should be repaired quickly and appropriate for the type of fire you use.

Major and Minor Liner Repairs
Whether your liner needs minor or major repairs, we can fix it quickly using HeatShield. This product is appropriate for joint repair, resurfacing, and complete relining. It is as durable and long-lasting as a stainless steel liner, appropriate for all fuel types, and cheaper. HeatShield combines the strength of a high fired ceramic with the heat resistance of high-temperature refractory cement, to create HeatShield Cerfractory technology. This product comes in powder form, so a HeatShield installer can mix and use it on site, cutting down on waste and cost.

HeatShield Installation
When you hire Magic Sweep for your HeatShield installation, we’ll begin by installing a custom foam applicator blade in your flue, attached to a winch system to complete the necessary repair. Following installation, the work is checked with a video recording system.

Joint Repair – For joint repairs and gaps, we place the foam applicator blade just below the affected portion of the flue and fill it with the HeatShield product. Using the winch, the applicator is pulled upward and deposits the product into the spaces, smoothing it over the flue liner.

Resurfacing – When the damage is more extensive, the liner will need a complete resurfacing. The foam applicator blade is placed at the bottom of the flue, and the product is moved upward, applying the product to the entire surface. This is after a “tie coat” is applied first to clean and prime the existing surface.

CeCure Sleeve Relining – When the entire flue needs to be relined, we use the CeCure Sleeve, a thin profile, ceramic insulation, reinforced with stainless steel fabric. This sleeve is sandwiched between two coats of HeatShield which is completely pressed into the flue using the foam applicator blade. Once completely relined, the flue is appropriate for all fuel types and should last 80+ years.

When your liner needs attention, let Magic Sweep come to the rescue with HeatShield. Call us at 757-523-2400.

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