Sweep your chimney!!

[Stubby]

I'm guessing that they've been burning wet wood too! But it was clean halfway down but like this to the top! I'm no expert but I reckon that's not been cleaned properly for a while. Please correct me if I'm wrong!

 

Some how I don't think you are wrong !!

[Jonny Burch]

From what I can see it looks like just wood.

[difflock]

However to play the devils Advocate.

If there was still a sufficient cross section left to ensure sufficient air flow and not reasonably assuming the build up was thermally insulating, was there a chance that the flue had reached a state of equilibrium.

In its coked up state being sufficiently insulated enough to get hot enough fast enough to prevent further deposition.

just a thought.

M

[likeitorlumpit]

He needs more regular chimney fires methinks:001_smile: