Chimney inspections are graded into three levels, each progressively more thorough. Level 1 is the standard visual inspection included in every annual service. Level 2 is triggered when something changes — a new appliance, a property sale, a chimney fire. Level 3 is the most invasive, required when serious damage is suspected and components must be removed to assess it fully. Most Melbourne homeowners only ever need Level 1; knowing when Level 2 applies is the practically useful knowledge.
Level 1 — Routine Visual Inspection
A Level 1 inspection is a thorough visual examination of all readily accessible parts of the chimney, conducted without special tools, cameras or removing any building components.
It covers the firebox (condition of firebrick and mortar), the damper (operation and condition), the visible interior of the flue (checking for creosote level, debris and obvious liner damage), the cap and crown (checked from accessible points), and the exterior masonry and flashing (for cracks, water damage and structural deterioration).
This is the level included in every professional annual chimney service. It is appropriate when the chimney has been used normally, there have been no changes to the appliance or fuel type, and there are no known events or problems. For the vast majority of Melbourne homeowners booking a seasonal clean, Level 1 is what they are getting and what they need. See what a chimney sweep does for the full service picture.
Level 2 — Detailed Accessible Inspection
Level 2 goes further than a visual check, covering accessible areas that are not part of a standard service and may include a camera inspection of the flue interior.
It covers all Level 1 areas plus accessible attic, crawl space and sub-floor areas where the chimney passes through, the roof area around the chimney, and the flue interior via camera when a standard visual cannot adequately assess condition. The camera scan is particularly valuable for detecting liner cracks, gaps between tiles, and evidence of past chimney fires that are not visible from the firebox.
Level 2 is required or strongly recommended in four situations: buying or selling a home with an existing chimney; after any chimney fire, even a minor one, to assess structural damage; when changing the appliance (e.g. fitting a wood heater where none existed, or converting from wood to gas); and when a Level 1 inspection finds something that cannot be fully assessed without greater access. It provides a written report, which is often required for insurance or conveyancing purposes.
Level 3 — Invasive Structural Inspection
Level 3 is the most comprehensive and the least common inspection. It covers everything in Levels 1 and 2, but may require removing components — masonry, liners, plasterboard, roof material — to access areas that cannot otherwise be properly examined.
It is used when Level 2 reveals evidence of serious structural damage or concealed problems that cannot be assessed without access. The clearest trigger is a severe chimney fire where the full extent of liner and structural damage must be determined before the chimney can be used or repaired. It is rarely needed for a well-maintained chimney, but when it is needed it is the only reliable way to understand the full scope of damage and what repair or rebuilding is required.
Because Level 3 involves removing structural or building components, it is more invasive and more expensive than Levels 1 or 2, and must be followed by appropriate repair. It is typically recommended by the professional conducting a Level 2 who finds evidence that warrants it.
When Each Level Applies — Practical Guide
Here is a practical summary for Melbourne homeowners.
Level 1 — book annually, before winter (February to April). This is your standard service. If your chimney has been used normally, nothing has changed, and there have been no incidents, this is the right level every year.
Level 2 — book when: you are buying a home with a chimney; selling a home and want a condition record; you have had a chimney fire or suspected chimney fire (see chimney fire causes and what to do); you are fitting a new appliance; your Level 1 revealed something inconclusive; or you are making an insurance claim that requires documented inspection.
Level 3 — when recommended by your technician following a Level 2 that revealed serious structural concerns. Not something you self-diagnose or request speculatively.