Piping quetion

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jj3500

Member
Hearth Supporter
what is the primary reason double wall is used outside the house for woodstove piping? Why can't we use single wall throughout the entire length? Or is it a preference?

thanks
 
Insulated pipe outside the house will keep the smoke from cooling too fast. If it cools too fast, you won't get good draft but you will get good creosote.
 
^^^what he said. If that pipe was subjected to a nice frosty winter day, you would have creosote ice cubes to play with.
 
You can't pass single-wall pipe through a wall or ceiling penetration...it's a CTC issue. At that point you transition properly from whatever connector pipe (stovepipe) you're using to Class A (insulated) chimney for the rest of the run to daylight. Rick
 
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