Creosote, the black or brown residue of combustion that collects within the interior surfaces of the chimney flue liner, is highly flammable. If permitted to Create up, it could catch fire, causing cracks in "fireproof" brick, stone or clay flue liners and allow warmth to succeed in nearby wood framing and https://chimney-cleaning-near-me15926.blogproducer.com/34312925/the-definitive-guide-to-linear-gas-fireplace