You have to use double walled pipe when going through walls and floors and what not because the double wall and the space between the pipes cools enough that it can come in contact with wall materials.
Should i use double or triple wall stove pipe.
Once the venting reaches the wall or ceiling it must be converted to class a chimney pipe.
Using a heat shield on a single wall stovepipe allows you to reduce the clearances from 18 to 6 to the wall and 9 to the ceiling.
Double wall stovepipe has get this two walls.
Inside the enclosure building codes require a 2 inch clearance around the double or triple wall chimney pipe.
Many think stovepipe can run from the wood stove right up through the ceiling and roof.
Ul standard 103 requires pipe capable of safety operating with an internal temperature of 1 000 degrees fahrenheit and withstanding a maximum temperature of 1 700 degrees fahrenheit.
Most of the double wall stove pipe allows for 6 clearance from wall combustibles and 8 from ceiling combustibles.
Any new installation i do i always recommend using a double wall stovepipe as opposed to a single wall.
Then convert to triple wall pipe through the attic and out the chimney.
This keeps it better insulated thus keeping the flue gases warmer.
Double wall black stove pipe has a 6 from combustibles and isn t very hot to the touch.
To the bottom of the ceiling box since this generates heat that is radiated into the room rather than confined to the pipe.
Single wall black stove pipe needs to be at least 18 from combustibles will radiate more heat than double wall black stove pipe desirable in most cases costs way less and can be cut to length if needed.
For example a single wall stove pipe requires 18 inches of clearance from ceilings or walls.
Double and triple wall insulated pipe is listed as class a vent pipe and must meet either ul standard 103 or 103ht.
While a double wall class a chimney pipe is adequate for most installations wood.
Standard practice is to use single wall stove pipe usually black from the stove.