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Flexible Liner

John J Doyle Ltd are stockists of Turner & Wilson Twinflex multi-fuel flexible flue liner.

Triple Lock Construction

Twinflex is constructed from 2 single strip stainless steel and locked in 3 planes. This gives maximum joint integrity and allows even weight and load distribution throughout the entire length of the installation.

Superior Quality

Twinflex is built with high performance 316 or 904 Stainless steel. The smooth inner bore allows optimum passage of flue gases and draining of condensates.

High Overlap

The Twinflex is simply superior. The unique large overlap of the joint formed by the inner skin protects against acid penetration. On close inspection you’ll find some liners on the market with minimal or non existent overlaps.


316 Grade
25 Year Guarantee

904 Grade
35 Year Guarantee