What is a chimney / flue liner?
Chimney flue lining is the process of inserting a flexible steel flue system into your existing brick chimney flue system in order to create a safe and efficient run for the flue gases (smoke) to follow until ?exhausted? from the chimney pot.
There are a number of different types, grades and sizes of chimney/flue liners and all have their own individual purposes. (Please note) chimney/flue lining is not a one-size-fits-all process and specialist advice should be sought when realising which product is relevant to you!
Why does a chimney need a liner?
There are a number of reasons as to why chimney/flue relining may be required, some of these reasons would be:
- Installing a new DEFRA approved stove/wood burner?
If so your chimney will require relining. In accordance with stove manufacturers’ guidelines a flue liner will be necessary in order to maintain hot flue gases and effective updraught and achieve the correct efficiency.
Did you know that it is illegal to operate/install a closed appliance with an efficiency rating of less than 65%?
- Installing a new open fire and failed a certified chimney test?
Your chimney/flue may require relining if during a certified chimney sweep and test smoke has been detected leaking/seeping into areas other than out the top of the user chimney pot i.e. – into neighbouring/adjoining flue systems, rooms above, loft space or a neighbouring house a new chimney/flue liner will be required.
It goes without saying that having smoke leaking into areas of the house is a very high risk of carbon monoxide poisoning! (Both gas fires and solid fuel/real fires emit relatively high levels of carbon monoxide).
- Had a standard yearly chimney sweep/test and failed?
Your chimney/flue may require relining. Even when an old brick chimney has been used safely for years there are factors and circumstances that may arise that can create problems/safety issues.
- Chimney Fires
If your brick chimney has not been swept/serviced regularly, the tar/creosote laden bricks of the flue become prone to catching alight and a chimney fire ensues!
Often this chimney fire goes unnoticed, but the heat created within the burning brick chimney more often than not will compromise the integrity of the chimney/flue, thus creating a leaking and unsafe flue.
Weathering on a flue over time can also have the same negative impact as a chimney fire.
- Haven’t got a brick chimney but want to install a DEFRA stove?
Don’t worry! It is sometimes possible to have a rigid insulated steel flue system erected in order to create a new “chimney/flue system.”