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Anatomy

Liner

The channel running inside the flue — clay tile, stainless steel, or cast-in-place.

All glossary terms

What is Liner?

Lining material installed on the interior of the chimney flue. Modern code requires a UL-listed liner, most often 316Ti or 316L stainless steel, built to contain heat and gases. A cracked or missing liner amounts to a fire hazard and a code violation at once; relining is the standard fix.

Related terms:FlueStainless Steel Liner

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We work on liner every week across DFW. CSIA-certified, written quotes, financing available.

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Active leak, animal in flue, post-fire damage, or smoke event? Real humans on the line 7 AM to 12 AM every day — replies in under 2 minutes. Tech dispatch within 2 hours during business hours, subject to crew availability after-hours.

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