Innovation to Repair Failed Flue Liner Systems

Every century or so an inventor comes into our world and solves one of the world’s problems. This century, the chimney industry was the beneficiary of a very clever invention that provides a slip cast system for repairing the innermost portion of failed chimneys. Chimney contractors, such as Midtown Chimney Sweeps, are grateful to the inventors of HeatShield® Cerfractory® Flue Sealant. This webpage will provide an overview of the Heatshield repair method.

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What Causes a Masonry Chimney Flues to Fail?

According to NFPA 211, a flue (the innermost portion of the chimney that comes into direct contact with the byproducts of combustion) has a specified job. Furthermore, NFPA 211 describes what failure is.

14.9* Damaged or Deteriorated Liners. If the flue liner in a chimney has softened, cracked, or otherwise deteriorated so that it no longer has the continued ability to contain the products of combustion (i.e., heat, moisture, creosote, and flue gases), the liner shall be either removed and replaced, repaired, or relined with a listed liner system or other approved material that will resist corrosion, softening, or cracking from flue gases at temperatures appropriate to the class of chimney service.

What causes this failure? Rainwater coming down the inside of a chimney, soaking into the soft red clay flue tiles, followed by heat from a fire. Freezing and thawing of the flue tiles and other surrounding masonry materials. Acidic moisture from sulfur producing heater appliances vented into the flue. Spalling caused by general deterioration and softening and cracking of clay flue tiles.

The Difficulty of Repairing Flue Tiles

The difficulty of repairing these flues is their location. They are not accessible, so Midtown Chimney Sweep technicians who are qualified HeatShield® Cerfractory® Flue Sealant installers must use specialized equipment to access these areas. The flue of a standard masonry fireplace is approximately 13″ x 13″ and half way up a 25 foot chimney there may be a cracked flue tile, or missing mortar in the flue tile joint that needs to be repaired. How can someone ever reach in there and repair it? Midtown Chimney Sweeps uses specialized tools and equipment to reach the inaccessible areas of the flue and coat the entire surface or pack those missing mortar joints.

HeatShield® Takes the “Heat” So You Don’t Have To

The product called Heatshield was first created in Europe over 20 years ago, and HeatShield’s® Cerfractory® technology is now a complex hybrid (ceramic/refractory) coating and is proven effective both in use and by independent lab testing.

As a repair, it’s been proven to withstand moisture, corrosive flue gases with sulfuric compounds, and high flue gas temperatures in up to 2900°F!  It’s rated a super duty refractory mortar per American Society for Testing and Materials (ASTM) C199. It surpasses requirements of both the National Fire Prevention Association (NFPA) and International Residential Code (IRC) which require only a “Medium-Duty” refractory mortar for use in fireplaces and chimneys. We at Midtown Chimney Sweeps is excited to provide you the best in chimney flue repair methods! To learn more about HeatShield’s® extensive testing, listing, and certification visit HeatShield® technology and testing.

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Midtown Chimney Sweeps is rated 4.9/5.0

ExcellentMidtown Chimney Sweeps4.8 Based on 2256 reviews fromSee all reviews review us onMichael JosephMichael Joseph ★★★★★ Great working with Midtown. They were accommodating, did good work, and made the process easy. Techs are knowledgable and communication with Miya around the permit process was clear and smooth. Thank you!Response from the ownerAwesome! Thank you for sharing your positive experience, Michael! We know any kind of installation can get complicated quickly and so we always strive to make our processes smooth sailing for everyone! We truly value your time and business! Take care :)--The Midtown Chimney Team🎩 TanyaTanya ★★★★★ these guys are great. they've been the first vendors i've dealt with who actually did a thorough excellent job and solved my problem, and for a very fair priceResponse from the ownerWow, thanks so much Tanya! Happy to hear we were able to diagnose and solve the issue for you! We appreciate your kind words! Please don't hesitate to reach out if anything else is ever needed, take care!-The Midtown Chimney Team🎩 Nick KnudtsonNick Knudtson ★★★★★ Mike was very thorough with the sweep and very informativeResponse from the ownerWe truly appreciate your business and your time leaving us a positive review, Nick! We are always happy to share our knowledge and Mike is one of the best! Take care!-The Midtown Chimney Team🎩 Travis MonroeTravis Monroe ★★★★★ I had a small leak through my chimney. Midtown Chimney was able to come out quickly and get it taken care of. Marcus was helpful and got the issue taken care of.Response from the ownerThanks so much Travis! We truly appreciate you taking the time to share your positive experience with Marcus! Glad to be of service for your chimney needs! Please take care and don't hesitate to reach out if anything else is ever needed, thank you!-The Midtown Chimney Team🎩 Isaac SmithIsaac Smith ★★★★★ Their technician Joshua was very helpful and knowledgeable. He went out of his way on a routine cleaning to point out some issues with our fireplace and gave recommendations to address them.Response from the ownerThank you for your positive review, Isaac! We're happy to hear Joshua was so helpful and thorough! Looking forward to continuing to provide you with excellent service! Please take care! -The Midtown Chimney Team🎩 shakurmurray22shakurmurray22 ★★★★★ Great service and great experience. Very easy to work withResponse from the ownerThank you for sharing your experience! We are happy to be of great service and are looking forward to helping with any future needs! Take care! -The Midtown Chimney Team🎩 Devon MunzPhelpsDevon MunzPhelps ★★★★★ Response from the ownerThanks so much for the 5 star review! We really appreciate it! Take care :)-The Midtown Chimney Team🎩 Angela EpiscopoAngela Episcopo ★★★★★ Daniel and his helper did excellent work. Very clean and very professional Great communication and explanations (and pics) of what needed done. Thank you Daniel, I’ll be using you in the future!Response from the ownerAwesome, thank you for sharing your experience, Angela! We know any type of home repair can get stressful, so we always try to communicate and explain to the best of our abilities to help ease the process! Glad we were able to provide excellent service for your fireplace and are looking forward to seeing you next time! Take care! -The Midtown Chimney Team 🎩 Rhonda CozziRhonda Cozzi ★★★★★ Levi Bruckelmyer Is wonderful human being. He's does his work 100% he came by. What should have only been? A couple of hours ended up being hours well into the night and then today I just had a question about something unrelated and he stopped by took the time out of his busy schedule to make sure that I was OK and to answer my questions. So whoever calls upon this young man to do for for him. 100% he's gonna do it to the best of his ability. And be there for anything that you need. Thank you and have a great day.Response from the ownerWow, thank you so much Rhonda! We agree, Levi is pretty wonderful! We are so happy to hear our level of service went above and beyond and hope to continue providing you with excellent service in the future! Thank you again and please take care!-The Midtown Chimney Team🎩 Adrienne PAdrienne P ★★★★★ We had an inspection done on our chimney, but the results were not complete due to our situation, and a newer technician. My husband spoke with the owner Mike, and he took care of us right away. They scheduled Brandon, a seasoned technician out to complete the job. He was very professional, very knowledgeable and made sure that our chimney was in great shape. He really put my mind at ease by going up on our very steep roof to do a visual inspection from above. Very thorough, and he was so courteous and conscientious. I highly recommend Midtown Chimney Fireplace Store. And I really appreciate they are family owned since 1979!Response from the ownerThank you so much Adrienne! We appreciate you taking the time to share your positive experience with us! Safety is definitely a priority and we're happy to have helped ease your mind with our thorough inspection process! Thank you for your recommendation and please take care! :)-The Midtown Chimney Team 🎩 Patrick SmithPatrick Smith ★★★★★ Levi is great. Very professional, clean and does a great job problem solving. We use this company every year.Response from the ownerThank you so much Patrick, we really appreciate your continued business and sharing your experience! It means a lot, Levi is one of the best! Please take care and we look forward to seeing you again next year! Thank you!- The Midtown Chimney Team🎩 Dino BonominiDino Bonomini ★★★★★ Eric was awesome! We had a sweep and an inspection done because we were getting water in our basement and suspected it was coming in from the roof/chimney because the water was coming out from our chimney flue ash clean out in our basement. Eric took me up on our roof with him and he showed me all the possible places where water could be getting in. Ultimately we did a water test where Eric took a hose up on the roof and sprayed the chimney in different spots while I kept an eye out downstairs for the water. We found the HVAC exhaust did not have silicone around the top of the chimney cap and that's where the water was coming in. Eric had some silicone in his van and was able to fix the issue for us. I did another water test a couple days later and no water!!! Very grateful we found the issue!Eric also showed us the entire process of him inspecting our chimney and pointing out the potential dangers if we were to use our chimney using his camera. He also showed us how to properly start our gas fireplace. We do not plan to use it due to the dangers he found, but it was really good to know all of that.We had great conversations with Eric. He was extremely knowledgeable and he was very respectful of our home. I am only recommending Eric and Midtown Chimney Sweeps for anyone needing help with their chimney!Response from the ownerWow, thank you so much Dino for sharing this awesome experience with Eric! He truly is a rockstar!! We will be sure to share this with him! Thank you so much, we value your business and your recommendation, it means a lot! Please take care and have a great day, thank you so much! :)- The Midtown Chimney Team🎩 Dan MillsDan Mills ★★★★★ Very satisfied with the work they have done sweeping and inspecting my chimney. They also helped diagnose an issue with a leak in my roof and provided recommendations on preventing birds from building nests in our dryer vent. Very helpful!Response from the ownerThank you so much Dan, for sharing your experience! We are so happy to provide excellent service and we truly value your business and are so happy to help! Thank you! Please take care :)- The Midtown Chimney Team🎩 Chad RemingtonChad Remington ★★★★★ The Worker for Midtown chimney sweep was very nice and did not take long to do the job. The fireplace area was clean and working great.Response from the ownerAwesome, thank you so much Chad!! We are so happy to provide excellent service! We value your business and please don't hesitate to connect with us again if anything else is ever needed, thank you! - The Midtown Chimney Team🎩 Kaegan ParkerKaegan Parker ★★★★★ Nathan absolutely took the utmost care and respect for our home and got our large wood stove out clean! Would recommend him & Midtown to anyone! Thank you for the amazing service!Response from the ownerThank you so much Kaegan, we truly appreciate your business and sharing your experience with Nathan! He is one of the best 🙂 Please take care and we look forward to connecting again if anything else is ever needed, thank you!- The Midtown Chimney Team🎩 Alexa RossAlexa Ross ★★★★★ Michael was very professional & respectful of my house! He went out of his way to provide excellent customer service. I appreciate the way he explained in detail what the recommendations were for my fireplace & even categorized them into safety vs nice to have options. Absolutely recommend!Response from the ownerThank you so much for sharing Alexa! We truly value your business and your recommendation, thank you! Please take care and don't hesitate to reach out if anything else is ever needed, thank you!- The Midtown Chimney Team🎩 Violet BreedenViolet Breeden ★★★★★ Today we had Stephen out from Midtown Chimney Sweep-Denver. He was so courteous, explained what he was doing, explained the state of our chimney (wood burning), the risks of our neighbors tree and recommended a chimney cover. He was not overbearing, did not pressure me into sales and cleaned up everything, there was at least 6 years of ash in a fireplace we light every Fall and Winter. Highly recommend him for cleanings. He does do fireplace conversions, but I can't speak for that.Response from the ownerWow, thank you so much Violet for sharing your experience! We are so happy to provide excellent service, Stephen is one of the best! Please take care and don't hesitate to reach out if anything else is ever needed, thank you!! - The Midtown Chimney Team🎩 Victor AngkicoVictor Angkico ★★★★★ Marcus did a great job in fixing my chimney cap leaking issue. He quickly diagnosed what was causing my chimney leak and clearly explained what and how he would get the problem resolved. He was quite diligent in getting it fixed very quickly which was very much appreciated. Now I no longer hear the pinging of leaking water in my chimney when it rains. 😁Response from the ownerAwesome, thank you so much for sharing Victor!! Marcus is one of the best!!! Take care and don't hesitate to reach out if anything else is ever needed :)- The Midtown Chimney Team🎩 Alex AflatooniAlex Aflatooni ★★★★★ Marcus was a straight up guy. Definitely knew his trade, and was able to give insight and understanding to my chimneys and inserts and the components. Would highly recommend.Response from the ownerThank you so much Alex, we truly appreciate you sharing your experience and your recommendation! Please take care and we look forward to connecting again if anything else is ever needed! :)- The Midtown Chimney Team🎩 Raymond AndringaRaymond Andringa ★★★★★ Marcus was throughout and honest with us and very helpful. I would recommend their service to anyone!! 🙂Response from the ownerThank you so much Raymond! We truly value your business and your recommendation, thank you! Please take care :)- The Midtown Chimney Team🎩 Rachael ReeseRachael Reese ★★★★★ Marcus is so kind, punctual, polite and friendly. He is also very knowledgeable on chimney systems and was able to help us brainstorm and fix ours. Thank you Marcus!Response from the ownerAwesome Rachael, thank you so much for sharing your experience with Marcus!! We are so happy to be able to get your chimney up and running great! Please take care and we look forward to connecting again if anything else is ever needed, thank you!- The Midtown Chimney Team🎩 S. Zack HermsenS. Zack Hermsen ★★★★★ Response from the ownerThank you so much for the 5 star rating Zack! Please take care :)- The Midtown Chimney Team🎩 Kristen EastKristen East ★★★★★ Marcus from Midtown Chimney Sweeps was friendly, professional and efficient. He did a great job of walking me through the process and explaining (verbally and with pictures) how our chimney is meant to work and what further recommendations he had for maintenance. We received a detailed invoice, including pictures of our chimney. Plus, the whole cleaning process took just over an hour. I also appreciated that Midtown Chimney Sweeps was not judgmental about how little we have priorly serviced our chimney. If you have been putting off hiring a chimney sweep due to lack of familiarity with the process, I would highly recommend Midtown Chimney Sweeps.Response from the ownerThank you so much Kristen, for this awesome review and sharing your experience with Marcus!! We are so happy to be of such excellent service and provide you with the resources you need! We truly value your continued business and recommendation, thank you! Please take care and we look forward to connecting again in the future :)- The Midtown Chimney Team🎩 S. P.S. P. ★★★★★ Marcus is great! On time and professional and explains what he was doing and why. Prices very competitive! I’d definitely use midtown chimney sweeps again if and when neededResponse from the ownerThank you so much for sharing your experience with Marcus, he is one of the best! We truly value your continued business and your recommendation, thank you! Please take care :)- The Midtown Chimney Team🎩 Sue MSue M ★★★★★ Great service - professional, friendly and knowledgeable. We’re happy to be able to use our fireplace again!Response from the ownerAwesome Sue, we are so happy to be able to get your fireplace up and running again 🙂 Please take care and we look forward to connecting if anything else is ever needed, thank you!- The Midtown Chimney Team🎩 js_loader
Heatshield resurfacing Midtown Chimney Sweeps CeCure Chimney, LLC

Your Chimney Expertly Repaired

Independent HeatShield® Installers are carefully selected based on their industry certifications and experience. Trained with factory education and specially designed application tools, your HeatShield professional can expertly repair your chimney. Special video cameras are used to verify completed repairs. Call Midtown Chimney today to see if we have a trained professional in your area!

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