Tag Archives: flexible flue liner

Do you need to line your chimney? Part 2

Do you need to line your chimney?

Building regulations do not say that it is essential to fit a flexible flue liner. If a chimney can be proven to be in good order then you do not have to fit a flexible flue liner.

ChimFit say that to really try and put you off from choosing not to fit a flexible flue liner. A wood burning stove that is designed to work with a 6 inch flue will not perform as well if it were attached to a chimney of 11 inch diameter!

With a flexible flue liner fitted properly, insulated (if required) there should be no reason for a wood burning stove not to perform perfectly.

The only time ChimFit may not recommend chimney liners is if the chimney is new.

Possible problems of deciding not to fit a ChimFit recommended flexible flue liner

1. If the chimney is not in good working order then smoke and harmful Carbon Monoxide can travel into your home, this is very dangerous since Carbon monoxide can kill and does kill. Note: that’s why a Carbon monoxide detector in all bedrooms as well as the room with the stove is highly recommended by ChimFit.

2. Hot air and gas rises – cool it down and it will slow its assent, stop altogether or sink. Hot air or gas does not rise well in cold chimney spaces, especially where heat-stealing space or rough surfaces are in the chimney as they steal heat and slow down the deposits that travel with the gases. These deposits, when slowed, form tar and condensation both of which can damage the innards of the chimney. If smoke slows down too much then the flow of said smoke starts to build up and dams underneath, thus the stove begins to burn inefficiently.

What to Know When Installing Flue Liner – Chimfit

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Most of our customers here at chimfit fit their stove and or flue liner themselves. You do not have to use a professional installer if you are DIY savvy and have general competence, If you are installing the wood burning stove into an fireplace and not installing a new chimney liner then the installation is very straightforward. Installing a chimfit flexible chimney liner or complete twin wall flue system is a larger project and may involve ladders/scaffolding if your roof does not have external access, this is since it is needed for the job, is still is however technically straightforward. Our twin wall chimney system simply slots together, no specialist knowledge or skills are required.

If you are thinking of completing the work yourself then you should contact the local council Building Control, they can then inspect the work you have done and sign it off if it is up to standard. Alternatively if the work is done by a professional installer (Which we here at Chimfit recommend) who is accredited by one of the relevant Competent Persons schemes such as HETAS then they can sign off their work themselves.

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Old houses will usually have exposed brick inside the chimney so it is not a legal requirement to line these older chimneys with chimfits liner unless they are broken or leaking, there are often advantages to lining such as increased draw. Installation of a wood burning stove and/or new flue system would not usually have anything to do with the local planning authority. If your property is a Listed Building then permission may or may not be required. If you intend your new chimfit flue pipework to run up the outside of an external wall then depending on the position you may need to check with the local Planning Department.

Flexible Flue Liner

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What to look for when buying flue liners

There are many flue liners for wood burning stoves available and it can often be difficult to know what to look for. In most cases, you will need a flexible liner for a wood burning stove . These are easy to install by yourself or a professional, especially if your chimney has any kinks or bends.

Flue liners for wood burning stoves should be strong and capable of holding up under the force of being pulled down the chimney pipe. They should also be able to handle the high temperatures that they will be regularly exposed to, as well as the dampness that occurs inside chimneys.

Also want to make sure that the flue liner you are installing is the right size for your stove and/or chimney. At Chimfit, we will show you flue liners that are offered in a range of sizes; from 5″ flexible liner products up to 7″ flexible flue liner products are available and can be cut on the meter from one to a forty meter coil if required from our stockists and online shops.

Installing flue liners of wood burning stoves

As well as flexible flue liners, your chimney (if you have one) may need other items to ensure a safe and reliable install. Installing a flue liner into an existing chimney it is vital to be sure to get the chimney cleaned first as this will ensure there is no residual soot or other mess that could make difficulties whilst doing the installation. Once you have installed the flexible flue liner, it is important to that all work must be inspected as per the Building Regulations. This check ensures that all flue liners are properly installed; that they are the right size for the wood burning stove requirements.