Flexible twin wall lining
We use the best flexible 316 grade twin wall flexible liners available. It is important to have the correct liner for solid fuel. There are two types of twin wall flexible liners - a 10-year guarantee liner called 316 grade and a 25-year guarantee liner called 904 grade.
Depending on the appliance, the diameter of the flue pipe will change to conform to Section J of Building Regulations 2002.
Our chimney flue engineers will calculate the correct size liner and fit the liner to ensure the fire or stove works in line with the manufacturer's recommendations.
The image of the liner shown here was a gas liner and not suitable for solid fuel, so was removed before installing the correct liner.