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| Flue Design |
The details of the flue design for your stove will be as individual as your home, however there are
general types of installation which follow certain patterns. |
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| Insulated Internal Flue System |
An internal flue system runs directly from the stove, up through any ceilings and floors, and through the roof. This is not as much work as it seems, although there are issues;
- The flue must be properly insulated at every point that it intersects part of the structure, ceilings, floors (not to mention carpets or laminate on upper floors), and roofing beams. In fact for aesthetics and safety, it is usually best to ensure that double skinned, insulated flue throughout.
- At the point where the flue exits through the roof, it is necessary to ensure that the flashing is fitted correctly, without this the seal will not be properly weather proof
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| External Insulated Flue System |
| An external flue system runs from the stove, out through the nearest wall and up.
This is usually the most expensive method of fitting a flue, not to mention the fact that it results in lower efficiency of the flue as it is cooled by the outside air.
The expense comes from needing angled joints, these also mean that the flue needs cleaning more often as they are where soot and creosote build up.
The other key issue with an external flue is the look of the thing. Although less intrusive inside, it does require a hole to be cut through the wall. |
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| Lined Chimney Flue |
| If your home already has a chimney then fitting the stove into the hearth or inglenook is probably the preferred thing to do, both in terms of ease of installation as well as cost.
A flexible chimney liner will probably be vital to ensure the safety of the installation, but these are very simple to install and will be invisible after the installation is complete.
Aside from the liner itself, it is best to fit a register plate to keep out draughts as well as a chimney pot with a bird guard and rain cowl, your chimney may already have one of these and it may be possible to re-use your existing chimney pot. |
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| Flues on Extensions |
If you are looking for a stove to use in an single floor extension to a two storey house, then be aware that if the flue rises less that 2.3m from the main house then it must run to about the line of the roof.
If you are looking to have an extension built and would like a stove to be fitted in it once it is completed, then you may like to consider building a pumice lined chimney. Pumice is ideal for flue lining as it is volcanic in origin, making it far less susceptible to the temperatures and corrosive nature of flue gases. |
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