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Chimney Standard
Anatomy

Liner

The barrier between combustion products and the building structure. A breach takes the flue out of service.

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All glossary terms

What is Liner?

Clay tile, listed metal, or a cast-in-place system. It contains combustion products, presents a correctly sized smooth surface, and resists chemical attack from the fuel. Establishing a breach requires an internal scan; a verdict without one is an opinion. A confirmed breach is not a scheduling item.

Related terms:FlueStainless Steel Liner

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Other terms in the glossary

Creosote
Condensed wood-smoke residue on the flue wall, graded by stage — and the stage is the finding that matters.
NFPA 211
The consensus standard governing chimneys, fireplaces, vents and solid-fuel appliances.
Inspection Levels
Three defined scopes — and the standard specifies when each is required, not which you prefer.
Flue
The passage carrying combustion products out — one appliance, one flue, correctly sized.
Crown
The sloped masonry cap on top of the chimney — the surface that fails first and costs most.
Chimney Cap
A required termination component with a specification — free area, mesh opening, material.
15+
Years in the field
NFPA 211
Checklist
48h
Written report
< 2hr
Response
Ready when you are

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Flat fee confirmed when you book. Same-week scheduling. A pass/fail verdict within 48 hours.

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Licensed & Insured Same-Week Scheduling Photo-Documented Findings
Emergency

24/7 Response

Chimney fire, storm hit, active leak, or a flue you're not sure about? We answer 7 AM to midnight and the assessment ends in a written safe-to-use verdict — including a do-not-use notice when the evidence supports one. After-hours dispatch runs subject to crew availability.

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