Welcome to John J Doyle Ltd - chimney liners, flue systems and refractory specialists


Established in 1928, John J Doyle Ltd are the leading refractory engineers and commercial & industrial flue experts in the UK and Ireland. 

Our services cover a variety of industries including biomass, data centres, generators, apartment blocks, healthcare, pharmaceuticals and education.  Projects expand the UK and Ireland into Europe.

Now operating for almost 90 years, we have an extensive track record of dependable workmanship and client satisfaction extending to a portfolio of top quality design, installation and stock.  All work completed by John J Doyle Ltd is to European regulatory standards, including the Clean Air Act.

With a proven reputation in refractory and flue, we continue to strive to be innovators.  Last year, we opened our dedicated trade counter and began a partnership with Be Modern Ltd.  This year we are opening a trade showroom and HETAS training centre.

John J Doyle Ltd is committed to providing premier quality, innovation and integrity to each project – from large to small.  With vast experience and a strict adherence to our core family values, we can assure there is no problem we have not seen and solved. 

We have also completed a number of generator flues on large data centres both in Ireland and in Europe. If you would like to have a look at these case studies please email your request to [email protected]

Twin Wall Flue  •  Vitreous Enamel  •  Flex Liner  •  Chimney Cowls  •  Ventilation   •  Chimney Fans   •  EcoFire   •  Ubiflex Extreme  •  Ubiflex  •  HETAS