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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Our chimney sweeps are qualified and insured.


Our local chimney technicians know what works best for your specific area.


Our sweeps treat your home like it’s their own.

Happy Customers

Midtown Chimney Sweeps is rated 4.9/5.0

ExcellentMidtown Chimney Sweeps4.8 Based on 2257 reviews fromSee all reviews review us onJustinJustin ★★★★★ Michael and Alice were both very nice, friendly, honest and informative, can’t ask for me than that. Will continue to work with them!Kathryn NaveKathryn Nave ★★★★★ Mason did an excellent job. He was friendly and provided clear communication about the service being provided. He was swift and efficient with completing the service.Tyger YoshiTyger Yoshi ★★★★★ We had some leaking in our chimney and needed to get our cap replaced. Mason came by for the initial inspection and let me know the situation and provided an easy to understand explanation on options. I was given updates on the timing of ordering parts and scheduled the work to repair soon thereafter. Mason came back to do the repair and calmly handled the situation where I may have created some stress -.-. Thanks for the speedy and quality work!Response from the ownerThank you for sharing your positive experience with Mason, Tyger! We always try our best to communicate every step of the way for ease of mind! Thanks for your time and for choosing Midtown! Please reach out if anything else is ever needed! Take care!-The Midtown Chimney Team🎩 Stephanie HildebrandStephanie Hildebrand ★★★★★ Right from the initial consultation, we were impressed by the knowledge and helpfulness from the team. There was absolutely NO PRESSURE. The fireplace insert is absolutely stunning! Can't wait to cozy up by the fire this winter! We highly recommend them!Response from the ownerWonderful thank you Stephanie!- Byron and Midtown Installation Team Michelle WebsterMichelle Webster ★★★★★ Mason did a fabulous job today servicing our wood burning stove including climbing up on our steeply pitched roof. He also cleaned another wood burning stove for us earlier in the winter and, again, did a wonderful job. We will for sure call Mason again to inspect and clean our wood burning stoves.Response from the ownerWow, thanks so much for this positive review, Michelle! Mason rocks and we're glad you think so too! Looking forward to connecting again and servicing your wood stoves in the future! Thanks again!-The Midtown Chimney Team🎩 Sherri ScottSherri Scott ★★★★★ Marcus was knowledgeable and a pleasure to work with. More importantly, he located the problem we were having and fixed it on the spot. We’re very grateful!Response from the ownerThank you so much Sherri! Marcus is truly one of the best! We are happy to be of great service and are looking forward to helping with any future needs! Take care!-The Midtown Chimney Team🎩 Jacob ZeiglerJacob Zeigler ★★★★★ Mason did an excellent job, was very professional and friendly, and made some great recommendations. Would absolutely work with him again.Response from the ownerThat's awesome, thanks so much Jacob! Mason is pretty great and we're glad he was able to help out! Thanks again for sharing your positive experience and please don't hesitate to reach out if anything else is ever needed! Take care! :)-The Midtown Chimney Team🎩 Jace DavenportJace Davenport ★★★★★ I was outside of a job they finished up. My car battery died and Jacob and his kind employee came over to help me out. Good trust worthy people.Response from the ownerAw, sorry to hear that happened, but we're glad Jacob came to the rescue! We are proud to say, we've got some great guys on our team. Thanks again for your kind words!--The Midtown Chimney Team🎩 Karina MartensKarina Martens ★★★★★ My family has a cabin above Boulder. When we came into ownership of the cabin we discovered that the stove and stove installation/stovepipe were very out of code. I looked around for a company to replace and install a new woodstove and decided to go with Midtown Chimney Fireplace. I sent them pictures of my cabin which has a really steep roof and they built an estimate and sent it to me by email. The estimate was comprehensive and easy to understand and when I had a question about it I was able to make a phone call and talk to a human on the other end of the line. I clicked the red approve quote button, paid the deposit, and then they scheduled the work. First they staged the product a few days in advance and then came right on time to do the installation work. Our home was as clean and in as good a shape after they installed the new stove as before.When the new stove was installed there was a small leak near their work area which they addressed promptly. There were no problems with the stove, installation and outside air kit that was necessary to comply with local codes. We love the way it looks!One year later we still couldn't be happier. Thanks Midtown Chimney Services!Response from the ownerThank you Karina, all the best on the new roof. If you need us we are a phone call or a text message away!-The Midtown Chimney and Fireplace Store team sarah finneysarah finney ★★★★★ We reached out to get our chimney cleaned and capped.Jon was very responsive an excellent! He addressed all of our concerns promptly. I was impressed by his commitment to honoring the old quote since we didn't have any changes in the scope of work. His work was efficient and solid, leaving us with a clean and properly capped chimney. I highly recommend this company for the professionalism and quality of service.Response from the ownerWow, thank you so much Sarah! We really appreciate you taking the time to write this positive review and will definitely pass it along to Jon. We agree, Jon rocks! Looking forward to helping you again with any chimney needs! Thanks again for your recommendation and please take care! :)-The Midtown Chimney Team🎩 Ben SanbornBen Sanborn ★★★★★ Called for help after the heavy snow knocked off a vent cap from my roof. Byron was friendly and knowledgeable and pointed me in the right direction. Thanks for your help!!Response from the ownerThank you! Jerry DrewelowJerry Drewelow ★★★★★ Levi was just here cleaning an air exchanger duct running to the exterior of our house. There was a sizeable mess of an old bee hive clogging things up considerably. The ductwork on the inside at the air exchanger was quite convoluted and Levi definitely went the extra yard to make sure we got the right duct cleaned end to end. We are extremely pleased with his work and couldn't be happier!Response from the ownerWe're so happy to provide you with excellent service, thank you Jerry! We're glad Levi was able to help keep your air ducts safe and clean! Please don't hesitate to reach out if anything else is ever needed, take care! :)--The Midtown Chimney Team🎩 Judy RiddleJudy Riddle ★★★★★ Marcus Lacey of Midtown Chimney Sweeps Gig Harbor was extremely professional and knowledgeable when he came to our Gig Harbor residence to diagnose an issue. We will use this company again and hope to work with Marcus! Judy Riddle-Skintauy and Jim SkintauyResponse from the ownerThanks so much Jim and Judy! Marcus is pretty great and we're glad you think so too! 🙂 We appreciate your business and time writing this kind review! Please take care and we look forward to connecting again if anything else is ever needed, thank you! --The Midtown Chimney Team🎩 Michael 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🎩 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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