Stove flue size in document j page 30.
What size flue liner do i need for a woodburner.
Fireplace flue size specifications relation of fireplace size to flue opening dimensions table of required chimney flue size and flue dimensions for masonry fireplaces.
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For open fires with a standard opening up to 500mm x 550mm the minimum required flue diameter is 200mm round or 175mm square.
The building regulations say that the flue diameter or cross sectional area must not be smaller than the size of the stove outlet which generally makes great sense.
In the case of 125mm flue outlets generally on stoves with 5kw output and below ideally the liner should be one size larger 150mm as this diameter will make it suitable for burning high volatile fuels such as coal or replacing the original stove with a larger output stove at a later date.
It is essential that the venting for any type of wood burning fireplace or stove include a flue of the appropriate diameter for the appliance.
When buying a woodburner a key consideration is making sure you get the right size flue liner for your stove.
That would be a square opening approx 33mm x 33mm.
A chimney that is 6 inches in diameter has a 28 3 square inch usable area also called the cross section through which to remove the combustion byproducts.
While it is not a legal requirement to have your chimney lined if you do choose to do so then there are regulations you must follow to make sure you do it safely.
Different appliances need different sizes of flue liner so it is important to get the correct flue liner.
This article series provides information about masonry fireplaces.
If you need to convert round liner dimensions to oval or rectangular try our liner shape calculator for ordering multiple sections of liner pipe try our chimney liner and flue pipe length calculator.
There is no standard size for wood burning stove flue liners.
The recommended minimum diameters for stoves is as follows.
If you are hoping to keep the budget for your wood burning stove to a minimum you may be asking yourself.
The purpose of prividing extra ventilation for larger stoves is simply to ensure there is enough oxygen being supplied into the room to allow.
One of these is the size of flue liner you use with your stove.
Understanding flue liner sizes.
For larger open fires like inglenooks which operate with a fire opening greater than 500mm x 550mm the flue size should be at least 15 of the free unobstructed area including the sides if open.
A stove rated at 7kw would need 550mm x 2 1100mm.
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What size flue liner do i need.
The size of the vent would normally need to be a minimum of 550mm per kw above 5 kw.
To provide adequate draft and safe venting of combustion products the chimney flue for a fireplace has to be adequate in size or cross sectional area.
You might be surprised to learn that getting a flue liner for your stove is actually one of the most important things you can do to keep your stove in top working condition.
