Single Wall Vs Double Wall Wood Stove Pipe

Black pipe used outside will run way cooler flue temperatures than class a chimney and will potentially build up creosote quite rapidly increasing the chance of a chimney fire. For example a single wall stove pipe requires 18 inches of clearance from ceilings or walls. Single wall pipe has a minimum clearance of 18 inches whereas most double wall carries a minimum clearance of 6 inches quite a difference.

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Once these clearances are met you must convert your stove pipe to class a chimney pipe for proper venting of your stove.

Single wall vs double wall wood stove pipe.

For safety the single or double wall black stovepipe transitions to class a chimney pipe when it nears a. The roaring fire in the wood stove keeps the room toasty warm on a wet chilly night. Single wall stove pipe can be installed from a stove to within 18 inches of any combustible material. I ve recently been looking into wood burning stoves.

Many installations use a stove pipe that goes straight up through the ceiling and out the roof. Black single wall stove pipe has a clearance to combustibles of 18 double wall black pipe has a clearance of 6 whereas class a chimney pipe is generally 2. Most of these use a single walled pipe for the first room the room containing the stove and then through the second floor and attic roof sections a double wall insulated pipe is used. Double wall stove pipe on the other hand requires only 8 inches of clearance from the ceiling and 6 inches from a wall.

The double wall construction keeps the outside cooler and thus reduces wall clearances to 6 inches and ceiling clearances to 8 inches. Neither it nor double wall uninsulated pipe can be used to penetrate ceilings walls or roofs. So the question is is there a difference in the efficiency of a wood stove in particular an epa stove with single wall or double wall flue. In a vertical chimney pipe installation uninsulated pipe runs to a ceiling box designed for a flat or cathedral ceiling.

I found several but none addressed the question i have. Our double wall black stove pipe is manufactured with our substantial 24 gauge black steel outer pipe and 430 stainless steel inner liner. Ok so i did search for threads on single wall vs double wall flue pipe for wood stoves. It is true that single wall pipe radiates more heat into the room than double wall but if it s at the cost of floor space and dangerous creosote build up than in my humble opinion it s not worth it.