First identify the system: masonry chimney/fireplace, factory-built fireplace/chimney, connector, appliance and fuel type. Then identify the exact component and surrounding construction.
Next locate the controlling sources: adopted code, applicable standard, listing/label and manufacturer instructions. Record the edition or document revision used.
Finally document the actual condition with measurements and photographs. If identification or access is insufficient, state that limitation and recommend the appropriate next step rather than manufacturing certainty.
Use the official source
VerifySweep summarizes concepts for professional education. It does not reproduce or replace copyrighted code or standard text. Consult the official publication for exact requirements.
Educational content only. Codes, standards, listings, manufacturer instructions and local amendments can change which requirement applies to a specific installation.