About Woodburner Flue Liner
Depending on the construction of your chimney, when installing a woodburning stove you may need to fit a flue liner. If the chimney is the correct diameter for the stove, provides sufficient draw (airflow), can be swept out and is proven to be airtight by performing a smoke test, then Building Regulations do not dictate that a liner is fitted. However, in the interests of safety, many installers insist that a flue liner is fitted regardless of legal requirement. Carbon Monoxide is invisible, odourless and deadly, and installing a flue liner provides another line of defence.
Although all flue liners are similar in that they are all simply a length of flexible metal tube, they are far from a one-size-fits-all application. The stove manufacturer will recommend a flue diameter to suit the performance of the stove, but this will not always be the same as the stove pipe diameter in which case an adapter will also be required. All flue liners should be made of dual skinned stainless steel, 316-grade stainless is the standard product with 904-grade being a more durable upgrade. There are also premium brands, which although more expensive, will come with extended warranties over standard flues.
When buying a flue liner, attention should also be paid to ordering the correct matching parts. The pot hanging cowl, flue nosecone, adapter where necessary and the closure/register plate will all need to be specified to suit the diameter of the flue. Conveniently, package deals are available with all the parts needed for a complete installation. Simply specify the chimney length, flue diameter and the grade of stainless required to obtain a total price.