Chimney terms, defined
Plain definitions of the chimney words that come up on estimates, inspections and supplier calls, written for chimney sweeps. Each term says where it matters on the job and links the Koira calculator, cost guide or template that goes with it.
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ChimneyChimney capA chimney cap is a metal cover over the top of the flue, with a hood to keep rain out and mesh to keep animals and sparks in check.ChimneyChimney crownThe chimney crown is the sloped cap of concrete or mortar across the top of a masonry chimney, around the flue tiles.ChimneyChimney damperA damper is the plate that closes the flue when the fireplace is not in use, either just above the firebox or at the top of the chimney.ChimneyChimney height ruleThe chimney height rule sets how far a chimney must rise above the roof and above anything nearby, so it drafts and its sparks clear the roof.ChimneyChimney linerA chimney liner is the clay tile, cast in place or stainless steel lining inside a chimney flue.Shared with RoofingCounter flashingCounter flashing is the upper piece of a paired flashing.ChimneyCreosoteCreosote is the tar like residue that wood smoke leaves on the inside of a flue.Shared with RoofingCricketA cricket is a small peaked roof built on the uphill side of a chimney or other wide roof penetration.
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ChimneyFireboxThe firebox is the chamber of a fireplace where the fire burns, lined with firebrick that can take direct flame.Shared with RoofingFlashingFlashing is thin sheet metal or membrane worked into a roof or wall wherever the surface is broken: at walls, chimneys, valleys, skylights and pipes.ChimneyFlueThe flue is the passage inside a chimney that carries smoke and combustion gases from the fireplace, stove or furnace up and out of the house.
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More for chimney sweeps: free chimney tools, templates and guides and how the trade runs on Koira. Or browse the whole glossary.