A chimney liner may be defined as a clay ceramic or metal conduit installed inside a chimney intended to contain burning products direct them to the outside atmosphere, and protect the chimney walls from heat and corrosion
Building regulations do not always dictate that a chimney must be lined; however, there are a lot of conditions that must be met in order to safely avoid the use of a chimney liner, some of which can be quite complicated and drawn out to calculate. As a result, the vast majority of fitters will automatically recommend a lining be put in place prior to the installation of a gas stove or wood burners
But what exactly is the problem? Why are chimney liners needed at all? The truth is there are a number of reasons why it is recommended a liner be installed. Below are some of the main ones –
Carbone monoxide is extremely dangerous when it builds up in an enclosed space. It often isn’t detected until it’s too late, hence it’s name – the silent killer.
If there is a fault with your stove or wood burning device then there is a possibility that carbon monoxide will be allowed to build up. If the chimney itself is not sound then there is a distinct possibility that the carbon monoxide will increase either in your property, or in your neighbour’s property. Even relatively small doses carbon monoxide can be fatal so it’s extremely important to safeguard against it. By having a properly fitted lining you can ensure that the seal on your chimney is secure, and any gas build-ups are safely disposed of.
Smoke is an inevitable side effect of using a fuel or wood burning device, and for the most part, it is not necessarily an issue – especially if your chimney is suitably lined. As smoke rises it begins to cool and this process is significantly sped up by chimneys, which have cracks and holes in them or jagged internal surfaces.
When the smoke cools it becomes heavier, often causing it to come back down the chimney, leaving dirty deposits around the fireplace. Tar and dangerous gases can also find their way into the room below causing potential health complications.
By installing a lining this process can be avoided as the smoke will be able to travel up the chimney in one process.
Installing a lining
Chimney lining installation is a specialist process. It is therefore important that you make sure you have an expert on hand to perform the task for you. They will be able to ascertain your precise requirements based on your chimney height, outlet and stove burner. This will ensure that you have the right level of protection, and that all regulations are met so that your installation can be approved.
Limits the chimney temperature and increases its lifetime
A chimney lining system prevents the masonry and joints of the chimney from overheating. The liner also safeguards the chimney from the corrosion that may be introduced by the acidic flue gases produced as combustion by-products. Functioning as a preventive measure against corrosion and overheating, chimney lining systems play crucial role in increasing the lifespan of chimneys. If your chimney doesn’t have a flue liner installed into it, then it is frequently exposed to the heat and gases produced by a fireplace or a wood heat stove, which severely damage the structure of the chimney over time. A damaged chimney can cause gas leakages, reduce efficiency and increase threats of fire in your home.
Reduces fire threats to your home
A chimney flue liner functions as a barrier between the chimney and the fire. If the chimney is exposed to heat and gases, it can easily catch fire and even its surroundings or woodwork too can spread fire speedily in the home. And thus, experts strongly recommend installing a chimney liner and preventing chimney as well as your home from fire scenarios that may occur due to overheating of the chimney.
Increases energy efficiency
Installing a chimney liner can considerably boost energy-efficiency of your chimney, as it let the fire burn more efficiently which reduces the heat-loss quotient. The liner also ensures optimal air-flow inside the chimney, which reduces fuel consumption, and in turn you can save a considerable amount of energy per year.
Reduces the hassles of heating stove maintenance
Instead of cleaning the brick-mortar work, the chimney liners are a lot easier and faster to clean and maintain which in turn keeps chimney efficient. It is recommended that you hire a professional for chimney sweeping, instead of doing it on own.
Available in a great variety of types and materials
Some most commonly used types of chimney liners include metal liners, ceramic liners and clay-tile liners. You will also find both flexible and rigid liners available. A liner from a quality material, if manufactured from a reliable and reputed company, ensures the chimney remains crack-proof and heat-proof.
Its also most economical with an installation cost of roughly about $100 per foot of chimney height