A twin wall flue system is the key to fitting a wood burner without a chimney. Simply speaking, it is a series of connectable stainless steel pipes that can carry your stove fumes outside. They comprise a stainless steel pipe wrapped in thick insulation and encased by a second outer tube. This keeps the temperature inside the flue warm enough to allow the fumes to draw through the pipe and deposit them outside.
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You have two options on how you install a twin wall flue:
Externally - with this option, you connect the pipe to your stove and have it exit through an external wall. It then runs up the side of your building to empty at a safe distance - usually near your roof.
Internally - you will still connect it to your stove, but you run it through the inside of your house, through your ceilings, and out of the roof to empty.
Which one is best for you depends on your circumstances. If you choose the external option, you will have a visible steel pipe along the side of your building.
