woodburning stove external flue

[halfax]

i am going to fit a woodurning stove.
what can i use for external flue?
it will be on an outside wall, can i carry on with just with enameled pipe.
i am told you only need twin wall if passing through internal spaces.
thanks for any advice

 

[stuart45]

The idea of using an insulated flue when external is that it keeps the flue gases warmer. This way you get a better updraught. A cold flue will not draw properly.

 

[Estrella]

For external it has to be twin wall flue, about £80 + vat a metre.