Creosote, the black or brown residue of combustion that collects within the interior surfaces of a chimney flue liner, is very flammable. If allowed to Develop up, it may catch fire, triggering cracks in "fireproof" brick, stone or clay flue liners and allow heat to succeed in nearby wood framing and https://gasfireplace35663.blogaritma.com/27760247/the-best-side-of-fireplace-inspection-near-me