For questions specifically relating to structures that ventilate combustion byproducts of fuel burned in an interior space, such as a fireplace, stove, or furnace.

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Gap between 6“ dia wall thimble & 6” hvac pipe

I bought a 6" dia aluminum wall thimble to vent my 6" dia hvac steel exhaust pipe through to the outside. However, the diameter of the 6" thimble is actually 6 3/4". How do I effectively insulate the ...
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1answer
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Damp patch on the chimney wall

I have a problem with condensation on the wall between my living room and the chimney and I would be grateful for suggestions as to how to tackle this. Some background: when I bought my house the ...
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Can I use the old and not used anymore furnace chimney to vent out my basement?

My chimney is not used anymore. Would it be possible or recommended to use it to vent the basement ? I would clean it and install a fan at the basement end. thanks
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Is it safe to seal the exterior of a stone chimney?

We have a 1938 stone chimney (not brick) that is severely deteriorated. We are going to repair the mortar immediately and put a cap on top, but we're unsure about weatherproofing the stone. We do want ...
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How to strengthen a giant pole made out of seven 2m long 40mm diameter plumbing waste pipes?

The problem: I have a plant growing out of my chimney. Last year I had a chimney sweep go up on the roof and remove the plant and fit a cowl/ cap onto the chimney costing over £500 including cost of ...