In September, 45 years ago, back in 1974 (the days when people used to speak on dial round phones and social media or the internet could not even be imagined), Alan Barnes, (Thermocrete founder) started Thermocrete.
It might surprise you to know that Alan is still the MD and is the person you are likely to be speaking to if you call. 45 years on and he is still at work everyday, in the thick of it!

Thank you for visiting the UK’s
largest Chimney Lining Company

Thermocrete are a trusted supplier & installer of chimney lining systems that will stand the test of time and we operate throughout the UK  (find your local chimney lining engineer). We are Gas Safe Registered which means you can be assured that an experienced and fully qualified chimney engineer will be installing your chimney lining system. We are a family business and we manufacture our own chimney linings and have done so for over 40 years. We have thousands of satisfied customers, read some of our customer reviews, At Thermocrete we install around 5000 chimney linings each year. We are very proud to receive such excellent feedback from our customers, we make it our mission to always leave every customer satisfied.

Stainless Steel Flue Liners – Supply & Installation

Thermocrete can provide stainless steel flue liners, rigid stainless steel flue liners, and flexible flue pipes at competitive rates. We provide the full service, supply and installation. This includes stove flue pipes. If you are looking for a local and trusted company to supply and install your stainless steel flue liner we can help. Our chimney engineers are fully trained and gas safe registered.

Feedback from our customers

  • “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 found the workmen very helpful, they also left everything clean and tidy”

  • “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”

  • “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”

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

    Sutton on Forest
  • “Fantastic service, polite installers, very clean and tidy job. First class”

  • “Very professional, polite & helpful staff. The job was very neat and cleaned up before they left. The road was also hosed down where they had been mixing the cement. Thank you!”

  • “Your workforce were outstanding, polite, helpful and extremely professional”

  • “Fantastic job, very professional staff, clean working and polite. Overall very happy with the job”

  • “The Thermocrete employees who worked for us were polite and courteous towards us and they left the work area involved clean before they left”

  • “Your skilled guys ticked every box! On time, professional, courteous & very tidy. Overall a very positive experience”

  • “Very efficient and hardworking. Very clean & today, polite lads. A real credit to Thermocrete”

  • “Very good service”

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

  • “My whole experience of Thermocrete has been a happy one! From the quote to installation everybody has been helpful and informative. thanks”

  • “Very happy with the work & the service”

  • “Excellent job, courteous, efficient & considerate service”

    Appletree Wick
  • “This job was carried out in a most friendly, considerate and professional manner and I would like to thank your employees for giving me a stress-free day, which is quite unusual these days. I feel confident that when the fire is used in the near future, no problems will occur. I am very pleased that this work has been completed in such a satisfactory manner and I would have no hesitation in giving your company a good recommendation”

  • “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”

  • “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!”

  • “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”

  • “I am just writing to say a big thank you to the three men who did the chimney lining at my home, they did a brilliant job and no mess or upset whatsoever, and making sure I was safe and OK. The fire is perfect now.
    I have informed Sheffield council how pleased I was with your work, and how perfect the fire is now. Once again thank you to you all”

  • “The team of men worked efficiently and effectively throughout the time they were there. They not only prepared well but also ensured that no time was any dirt or damage done during and after completion.
    I can certainly recommend your services to any people who ask me for advice on this problem in future”

  • “I am writing to express our appreciation of the service we have received from your firms engineers. From the first CCTV visit on the 23rd June, to the final lining visit today, 11th July, all your representatives have been thoroughly professional and efficient. They have left everything spotlessly clean and, above all, have been thoroughly nice people. Please pass on our thanks to them, they are a credit to your firm and you should be proud of them.
    Thank you for the excellent 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”

  • “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”


Why Choose Thermocrete Chimney Linings?

THERMOCRETE is a revolutionary process which allows your existing chimney to be lined without any construction work.
The material used for this is THERMOCRETE B2C a lightweight, but incredibly strong Monolithic Refractory Castable, reinforced with Ceramic Fibres. It will restore your chimney-stack to perfect condition (making it stronger than new), ensuring the flue is correctly sized for the appliance, increasing the flues efficiency, completely curing the existing damage and preventing further deterioration.
THERMOCRETE is impervious to combustion gasses and acid attack,: it also has excellent insulation properties.


CLICK HERE to find Thermocrete installer
near you.

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CLICK HERE if you would like to become
a Thermocrete Installer.

Thermocrete allows your existing chimney to be lined without any construction work…read more

Chimney repairs, CCTV surveys & creosote treatment

Interested in becoming a Thermocrete Installer?

Chimney linings installed with minimal disruption to your home or business.

We are so confident in our chimney linings that we provide a lifetime quality assured guarantee for your peace of mind.


We cover the whole of the UK, key areas include:

Scotland: Glasgow, Edinburgh, Dundee, Scottish Borders, Aberdeen, Inverness

North East: Newcastle Upon Tyne, Darlington, Sunderland, Middlesborough, Durham, Northumberland, Whitby

Cumbria: Cumbria, Lancaster, Lake District

Yorkshire: Bradford, Leeds, Wakefield, Huddersfield, Harrogate, York, Barnsley, Sheffield, Rotherham, Doncaster,
Castleford, Pontefract, Halifax, Dewsbury, Batley, Skipton, Otley, Ilkley, Keighley, Brighouse, Scarborough, Hull,

North West: Blackburn, Burnley, Chester, Stockport, Manchester, Preston, Liverpool, Wirral, Morecombe, Macclesfield, Warrington, Bolton, Lancashire, Blackpool, Cheshire.

Lincolnshire: Lincoln, Scunthorpe, Grantham, Skegness

Wales: Wrexham, Newport, Cardiff, Swansea

Midlands: Derby, Nottingham, Leicester, Birmingham, Peterborough, Chesterfield, Stoke on Trent, Wolverhampton, Shrewsbury

Southern England: Luton, Bristol, Bath, Oxford, Cambridge, Swindon, Reading, Slough, Brighton, Bournemouth, Portsmouth, Canterbury, Norwich, Ipswich, Northampton, Milton Keynes, London, Basingstoke, Southampton

West Country: Devon, Dorset, Cornwall, Newquay, Exeter, Torquay, Plymouth