I have built an upper floor on my single-story house and have demolished the old chimney to the joist level.
Now I want to extend the chimney about 4.5 meters up and out through the outer roof with an insulated chimney pipe, such as Premodul or similar.
The old flue is approximately 200 by 130mm.
Does anyone have a good solution on how to splice the chimney pipe to the old chimney?
