Log Burners.

[MWB]

How long would it take for a chimney to become sooted/clogged up after burning wet/green wood?

I have an enclosed multi-fuel.

[seadogg]

Sooting isn't the main problem. After a time creosote deposits build up as gases condense in the flue. These can create a real fire hazard but you would be O.K for several months if the wood was burned quickly in the stove. Ideally the chimney should be lined to slow down cooling in the flue..

Best is to avoid green wood altogether. A bit of water on well seasoned wood is not so bad but try to keep green wood for 3 years in a dry place.

[MWB]

Thanks, seadog.

It's just that I had the chimney cleaned about a month ago then started burning wet wood. The fire has smoke coming out the front even with the door closed now. I didn't think it would take such a short amount of time for the chimney to block up.

Am getting it cleaned again & will burn only coal until the wood dries out.

[coccinelle]

Your chimney mightn't be blocked up, but probably can't cope with getting rid of the amount of smoke caused by wet wood. You'll know once you start burning the coal if the chimney is blocked as it'll do the same thing.
Our wood burner smokes when we have high winds as the fire can't be drawn from above.