How the Thermocrete chimney
lining system works.

The basic concept of the system is simple but extremely effective. A rubber former is inserted precisely in position through the entire length of the flue .Special techniques are used to keep the former centralised, even if the flue has a 45° bend. Thermocrete B2c material is pumped into the flue from the top of the chimney stack filling all voids, cracks and damaged joints. When the Thermocrete has hardened, the former is deflated and removed leaving a perfectly smooth cylindrical flue.

Industrial Applications – – – Industrial flues serving boilers up to 1.5 million BTU have been lined with Thermocrete. The principal is exactly the same with the pouring process being repeated in stages until the full height of the chimney is reached.

Whatever form of heating you use AN EFFICIENT CHIMNEY IS ESSENTIAL to your SAFETY and ECONOMY


Thermocrete Sealant is applied by a high pressure rotating spray machine.
The sealant fills all the gaps and cracks leaving a smooth gas tight coating on the inner surface.

The benefits of our chimney lining system

1. ISO ISO 9001-2008 Quality Assured
2. Approved for Class One Chimneys and Class Two Flues.
3. Suitable for All Flues.
4. Less expensive than other methods.
5. Quick Clean Installation.
6. Seals all Gaps and Cracks
7. Leaves a smooth Gas Tight Finish.
8. Impervious to Acid Attack.
9. Does Not Effectively Reduce the Flue Size.
10. Environmentally Friendly.

  • “Dear Sirs, May I say how impressed we were with Martin and Paul. From the moment they arrived they never stopped working, not even to have a sandwich. They left no mess whatsoever.
    Two very nice and polite men and I would have no hesitation whatsoever in recommending them and your firm to anyone who would wish to have their chimney lined. You were also right Matthew, the house is much warmer and the fire works far better than before. Once again thanks for a job well done”

  • “Dear Thermocrete, we would like to thank you for the work you did, it was carried out swiftly and tidily. When we returned from work there was barely any evidence of workmen having been in the house! We will recommend you to friends if the opportunity arises!”

  • “The team provided an excellent service. They were thoroughly professional and demonstrated high levals of expertise even when they encountered unexpected problems with our chimney. I would definitely recommend Thermocrete to others”

  • “Excellent service, they arrived on time despite the snow, were polite, didn’t make much mess and cleaned up afterwards.”

  • “Work was executed in a very professional manner and the chimney seems to work well, so far so good!”

    Sutton on Forest
  • “We would like to thank you for a fantastic job. On and off over a period of 15 years we have been told that our chimney wasn’t suitable for a Thermocrete lining. Thank you for a great job”

  • “I thought I would let you know how much I appreciate how well the job was carried out at my mums property. The operatives were very friendly and put my mum at ease straight away. They explained the job and how it would be carried out, they showed much respect to my Mums concerns and explained in detail what they do and how they do it, they also were very considerate to her house and furniture making sure that all the carpet and furniture was covered up and they even cleaned up after themselves. The team that did the job are a credit to your company.
    Once again thanks for a great job I will certainly recommend your company to anyone”

  • “Very good service”

  • From the time I first contacted Thermocrete, on the recommendation of a friend, I was impressed with your response and attitude. This view continued when Matthew came and did the appraisal through the various phone calls, and ultimately when Martin and Andrew came along.
    Your men were presentable, polite, co-operative, and eager to please, and they seemed to be right on top of the job. They were also scrupulously tidy, in what I am sure could become a messy operation, and yet they left the site more tidy than when they arrived. What is more, Thermocrete’s quote was very competitive with those of the metal liner people. Many thanks”

  • “Please thank your workers who came to install our chimney lining, they were polite and they left our home as clean as they possibly could”

  • “Dear Sir, I would like to thank you for the excellent service I received from your company whilst installing a chimney lining to my property. I was particularly impressed with the two men who installed the lining on Monday the 13th of October, they were very professional and polite, and were a credit to your firm.
    It is nice to find a business with old-fashioned values and standards, thank you once again”

  • “Your young workmen have just left my house after re-lining our chimney.
    I thought you would like to know what a great set of lads these are. They appear to have made a good job of the chimney and pot. Left NO mess, were polite, professional, friendly and worked constantly whilst they were here. I thought it would be quite a stressful experience, but I have to say it was anything but.
    I will also recommend you should I hear of anyone wanting their chimneys doing.
    The lads seemed to enjoy their work and all said they liked working for your company so you are obviously a good boss. Well done. Once again than you and thank the lads”


ukInstallers of Chimney Linings Throughout the UK

Our “CHIMNEY CHAPS” are a national network of highly skilled chimney lining engineers which means that wherever you are in the country we can provide you with a chimney lining service. CLICK HERE to find a local installer.

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CLICK HERE if you are interested in becoming a Thermocrete Installer!