Call today!

Magic Sweep Blog

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.

Oil Chimney Flues Also Need Cleaning and Maintenance

A common misunderstanding about oil-fired appliances is that the oil burner company cleans and inspects the entire chimney system during its annual maintenance service. However, very rarely does an oil service technician do anything at all to the oil flue. Nor will the oil company examine the exterior masonry work on a chimney, so important repair issues can go unnoticed. Recommended by the Chimney Safety Institute of America (CSIA), the National Fire Protection Association, and other national fireplace and chimney organizations, your chimney should undergo a Level 1 inspection annually by a CSIA-certified chimney sweep, like our technicians at Magic Sweep. This includes oil-fired appliance chimneys as well. Neglecting the essential chimney maintenance tasks can lead to expensive repairs to your chimney. Magic Sweep would like to tell you more about the specifics concerning the cleaning and maintenance of oil chimney flues.

Soot on Your Chimney - Chesapeake VA - Magic Sweep

The Problem with Soot

As the chimney walls of wood-burning fireplaces can be covered with large deposits of creosote build-up, the walls of your oil flue can become lined with soot residue. Your oil-fired appliance generally endures long running times during the cold winter months. Soot is produced from these long run cycles, and this oil soot first sticks to the chimney’s walls. Sooner or later, this soot can fall to the base of a masonry chimney or even inside the oil-fired appliance.

The Danger of Carbon Monoxide Poisoning

If the build-up of soot becomes large enough, it can block your chimney’s flue and restrict the outward flow of gases like carbon dioxide, water vapor, and nitrogen. Another gas formed as a by-product of combustion is the dangerously toxic carbon monoxide. Odorless and tasteless, you may not even know when carbon monoxide has been leaking into your home until you and/or your family begin suffering symptoms of carbon monoxide poisoning. All oil-fueled appliances need to be properly vented so that carbon monoxide and other gases can exit out the chimney. The base of the chimney should also be completely swept. An annual chimney sweeping and inspection from Magic Sweep can prevent the possibility of carbon monoxide entering your home via your chimney appliance.

The Role of Sulphur in Damaging Chimney Liners

Oil soot is made up of a combination of carbon and sulphur. Rainwater and other moisture mixes together with sulphur, which gets absorbed into the flue tiles and masonry work and starts the deterioration process of spalling. Your annual chimney sweeping will clean the walls from soot deposits to protect your chimney from damage. Metal chimneys are not immune to the destructive side of sulphur. A sulphuric acid reaction will begin to corrode the stainless steel liner by forming pinholes, which renders the liner unable to contain the by-products of combustion. Spalling and cracking in a clay liner compromises its purpose as well. A damaged flue liner creates potential health hazards, such as carbon monoxide leaks, to you and your family. A chimney inspection will find a damaged liner, which will allow you to have it repaired or replaced.

If you have any further questions about the cleaning and maintenance of oil flues, contact Magic Sweep today to ask our expert staff. You can also schedule your annual chimney sweeping and inspection to protect your oil flue from any damage or deterioration caused by soot deposits.