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Magic Sweep Blog

HeatShield Protects Your Chimney From Extreme Heat

All of the parts of your chimney system work together for one thing–to protect your home from fire and exposure to harmful gases. The chimney is made up of many parts that work together to keep it working properly year after year. One of the most important and somewhat overlooked parts of the system is the chimney liner, sometimes called the flue liner because it literally lines the flue. Replacing or repairing the liner can be expensive and time-consuming, but not when you use HeatShield. It protects your chimney from extreme heat, keeps the fire in its place, and is safe HeatShield Protects Your Chimney - Chesapeake VA - Magic Sweepfor use with all fuel types.

HeatShield Cerfractory Technology

This “cerfractory” technology was developed in Europe over 20 years ago and combines the strength of hybrid ceramic and the heat resistance of refractory cement. It comes to the chimney company as a dry powder, so we only mix what amount is necessary so we don’t waste any HeatShield and our customers don’t waste money. This product has been tested for heat resistance and strength, and is listed to UL 1777 standards for chimney liner systems in residential homes. We can use HeatShield to restore or line your chimney system this summer!

Chimney Cleaning with HeatShield

HeatShield Poultice Creosote Remover (PCR) [CeCure® Sleeve] is applied to the flue walls by using a custom-made foam applicator blade that is attached to a pulley at the top of the flue. As the blade is pulled upward, the HeatShield Poultice Creosote Remover is applied to the walls where it dissolves and absorbs creosote (even 3rd degree glazed creosote). Once it dries, it falls off the walls, leaving a clean surface. Once the flue is clean, HeatShield Cerfractory Flue Sealantcan be applied for heat protection.

Repairing the Liner with HeatShield

Joint Repair – A custom foam applicator is placed below the affected areas of the flue and attached to a pulley at the top. HeatShield Cerfractory Flue Sealant is placed in the applicator and it is pulled upward, depositing the sealant into voids and cracks. The applicator blade smooths the sealant as it is pulled upward.
Resurfacing – The custom foam applicator is placed all the way at the bottom of the flue, attached to the pulley at the top. First, a tie coat is applied to the flue to clean it, and then HeatShield Cerfractory Flue Sealant is applied to the entire flue at ¼ inch thickness as the applicator is pulled upward again. The job is double-checked with a video scan.
CeCure® Relining – Magic Sweep can reline the chimney system completely using CeCure® Sleeve Relining System. First, the HeatShield Cerfractory Flue Sealant is applied to the flue with a drying accelerator added. Next, a custom fitted CeCure® Sleeve is attached to the top, where it is positioned in place as the applicator blade is sent down again. Finally, another layer is applied over the CeCure® Sleeve to finish the job. The job is verified using a video scan. The CeCure® Sleeve Relining System is safe for use with all fuel types, and the CeCure® Sleeve itself is a high-density, low-profile ceramic insulation sleeve reinforced with stainless steel fabric.

Let Magic Sweep take care of your chimney with HeatShield. Call us at 757-523-2400 today or request an appointment online.

What is HeatShield technology and How Does it Work?

HeatShield® is a chimney liner repair system that restores the chimney to its full safety and function in one easy process. It has been intensively tested and is considered a “Super Duty” refractory mortar. It is affordable and long-lasting. So, what is it?

HeatShield® Cerfractory® Technology

The HeatShield® difference is that it combines the strength of ceramic and the heat resistance of refractory cement to create the cerfractory technology that can repair your joints, resurface your chimney, and assist in lining. When an installer is trained and certified to apply HeatShield® in the field, he’ll do so by simply mixing water with the powder. This allows for less waste and keeps costs low. At Magic Sweep, we trust HeatShield®, and we’re proud to offer HeatShield® repairs and relining with the same great service and professionalism we’ve offered for years here in Chesapeake.

HeatShield® Joint Repair System

When joints become damaged, they not only create gaps, but it also create rough areas that disrupt the flow of air, which brings down the efficiency of the chimney. When this happens, the gaps commonly get bigger and worsen until a bigger problem arises in the flue. Using HeatShield® Cerfractory Technology, we can efficiently fill these gaps using a foam applicator blade, which custom fits your flue. After application, we check the system using video technology to ensure it works properly.

HeatShield® Resurfacing System

Over time, even expensive and properly-installed liners can become damaged. Cracks, gaps, and spalling masonry can become a problem–especially when a chimney is neglected and necessary maintenance appointments are forgotten. We can resurface the entire flue by using HeatShield® Cerfractory Technology. First, the foam applicator is made and placed at the bottom of the flue. It is then hoisted up as it applies a “tie coat” material to the walls. Once this coat dries, we apply HeatShield® in the same manner. This process is repeated once more, and then the job is completed with a video scan.

HeatShield® Cecure® Sleeve Relining System

Both resurfacing and relining work as a liner for your flue, and it’s safe for all fuel-types and long lasting, while also properly-sized–just as if you had a new liner. However, with the HeatShield® Cecure® Sleeve Relining System, nothing has to be removed from the flue. This is less disruption to the home as the HeatShield® material goes directly over the damaged portions. First, HeatShield® Cerfractory® Flue Sealant is applied using the custom foam applicator. Then, a CeCure® Sleeve made of high-density, low profile, ceramic insulation, reinforced with stainless steel fabric is placed inside the flue and pressed firmly into place using the foam applicator. The job is finished when another coat of HeatShield® Cerfractory® Flue Sealant is applied over the sleeve. This work is also checked using a video scanning system so that you have the verification of its safety and installation.

Magic Sweep Installs HeatShield®

We trust HeatShield so much, and we are proud to offer these services to our customers who have damaged or missing liners. This technology was developed in Europe over 20 years ago, and has only improved since then. It’s the top choice for chimney professionals in the United States and Europe, and it’s our top choice too. Call Magic Sweep today at 757-523-2400!

Chimney Relining

Over the years, your chimney liner suffers from damage, and this can lead to some serious safety issues. According to the Chimney Safety Institute of America (CSIA), your chimney liner serves three important functions. It protects the bricks and mortar of your chimney from the corrosive gases from combustion, it protects your home from extreme heat transferring to combustibles, and it provides a correctly-sized flue for your heating appliance. If your chimney liner is damaged, it cannot do its job properly. Magic Sweep offers chimney relining services for every type of chimney liner, and we would like to tell you about the options we provide.

Chimney Relining - Chesapeake VA - Magic Sweep


If you have an older masonry chimney, you probably have a clay tile liner. Even though these liners are durable and built to last for years, the clay tiles can still suffer from erosion and spalling damage. Magic Sweep offers an economical and easy way to reline clay tile liners with HeatShield. Our chimney technicians have been trained to apply this cerfractory formula with special tools to repair and restore clay tile liners.


The only liner that carries a lifetime guarantee, a stainless steel chimney liner is the best option if your old liner is beyond repair. It is also the easiest way to bring an old chimney up to modern building codes that require every chimney to be lined. You should also choose a stainless steel liner if you are updating your old fireplace with an insert. Magic Sweep can fit the liner to your new heating appliance to give it a properly-sized flue so that the insert will work safely and efficiently.


This type of liner is a lightweight cement-like product that we can pour into your chimney to form a passageway that is smooth, seamless, and insulated. Magic Sweep uses Supaflu Chimney Systems as our cast in place method, and this durable liner comes with a great warranty. We can let you know if this type of liner is an option for your chimney after we perform a Level 2 chimney inspection to see exactly how damaged your flue is.

In order to work at its safest and most efficient level, your chimney needs to be relined when the liner is damaged. Contact us at Magic Sweep to talk to us about which type of chimney relining method is best for your chimney.

Options for Relining Your Chimney

One of the most essential parts of your chimney and venting system, a chimney liner protects your house from heat transfers to combustibles, protects the masonry work of your chimney from the corrosive byproducts of combustion, and provide a correctly sized flue for your heating appliance. Over time, your liner begins to deteriorate and crack, which can cause a couple of hazards. Toxic gases like carbon monoxide can leak through the cracks into your home, and your home is at a higher risk for a devastating chimney fire due to the lack of protection from the high heat that passes through your chimney. If your chimney liner is damaged in any way, it is time to reline your chimney, and Magic Sweep has a couple of options for relining your chimney. We would like to tell you more about our two options to help you decide which one is best for you.

Relining Your Chimney - Chesapeake VA - Magic Sweep

This chimney seriously needs relined!

Stainless Steel Liners

The only chimney liner with a lifetime guarantee, a stainless steel liner will never have to be replaced. Since stainless steel is resistant to rusting and corrosion, you will not have to worry about cracking and other deterioration. The liner is sealed from the top to the bottom, which means smoke, gases, and vapors exit your chimney without ever touching the masonry work of your chimney. Another plus of stainless steel liners is they can be insulated. An insulated liner further protects you from creosote accumulations because the combustion byproducts are kept hot throughout the chimney. Additionally, when you are not using your fireplace, the insulated liner will keep cold downdrafts from entering your home through the chimney. Easier to clean and to install than other liners, a stainless steel liner will improve the energy efficiency of your heating appliance by reducing cold downdrafts and by improving your chimney’s draft as hotter gases draw better than colder ones. A good draft contributes to higher fuel efficiency because the combustion process is more complete. If you need to completely replace your liner or if you are building a new home and need a chimney liner, Magic Sweep highly recommends installing a stainless steel liner.

Cast In Place

If you have a clay chimney liner that needs restoring, you have the cast in place option, a technique that pours and casts a lightweight cement-like product into your chimney and is directly applied and formed to restore your clay liner. At Magic Sweep, we use the Supaflu Chimney Systems cast in place liner method because of its high quality and limited lifetime guarantee. Benefits of this type of liner include improved stability of its structure, easy maintenance, suitability to every fuel type, improved efficiency, and added safety. If this type of liner interests you, Magic Sweep will first do a Level 2 inspection of your chimney to assess the liner damage to see if we can do a cast in place restoration or if you will need to replace the entire liner.

Want to know more about our two chimney liner options? Contact Magic Sweep to ask our expert staff any questions you may have.