so, I cleaned the stove pipe before the -2°F weather... this just a week later. It did sleet though. I'm burning dry ash.. can anyone direct me to the issue? it's it that my stovepipe isn't getting hot enough? any help us appreciated!

You need Class A all fuel Chimney Pipe. Through wall and up to top.

The stove pipe you are using is called connector pipe. This is ONLY for connecting stove to chimney inside.

Only Chimney Pipe can go through walls with a proper wall thimble. This comes in kit form. Lowes sells Supervent, Home Depot sells Dura-Vent. (Home Depot only stocks in winter as seasonal item).

Creosote does not leak out.

Chimney pipe is insulated to stay hot inside. Flue gasses must stay above 250*f to the top before exiting.

Below this critical temperature, water vapor from combustion condenses on flue walls. Wet flue walls allows smoke particles to stick. Smoke particles and water is pyroligenious acid. This is primarily wood alcohol and acetic acid. In liquid form this is harmless. When baked on flue walls, this becomes the various stages of creosote.

What stove are you using?

Pictures of installation inside are required to verify if this has sufficient clearance and floor protection.

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