Commercial and Industrial Projects


John J Doyle Ltd offers a complete commercial and industrial chimney flue package, including design, supply, installation and maintenance across the UK and Ireland. We undertake projects of all sizes, ranging from schools to some of the largest data centres in Europe.

All of our installations use the highest quality materials including Dinak. John J Doyle Ltd has worked closely with Dinak for over twenty years and together both companies have become a major supplier and installer of flue systems throughout Ireland and the UK. We can confirm that all of Dinak’s products have EN 1856-1 approval and the system has been tested by TÜV Munich. We can offer design for modular flues fixed to a support structure or if the preferred option is a wind shield arrangement, then this also can be designed and supplied.


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Belfast Office

Duncrue Industrial Estate
5 Duncrue Place
Belfast BT3 9BU
TEL: 02890 247864



Norwich Office

Oaklodge Business Centre
School Lane
Little Melton
Norwich NR9 3LB
TEL: 01603 819137