A chase cover and a chimney cap are different parts.

First, identify what the report is describing

A chase is the enclosure around a chimney system. CSIA’s homeowner guide describes the chase cover as the metal pan covering the top of the chimney structure and lists it separately from the chimney cap. A report using “cover” or “cap” loosely can leave you unsure which part is involved.

Ask the provider to identify the component on a labeled photograph or diagram of your system. Is the finding about the broad chase cover, the rain cap or another part nearby? The word “top” is not enough to define a replacement scope.

Source: CSIA Homeowner’s Guide, third edition (PDF), factory-built systems section; checked October 27, 2026. This background does not establish the construction or condition of your own chimney.

Why a rust finding needs context

CSIA’s professional Level 2 factory-built fireplace guidance calls for examining a chase pan for rust, low spots and pinholes. It also notes that water entry can call for further investigation of moisture damage. The guidance discusses the rain cap, storm collar and flashing as other components to assess.

Ask the professional what was observed, where it was observed and whether anything remains inaccessible. A roofline photograph can help locate a concern, but it cannot by itself establish the condition of the enclosed area.

Source: CSIA Level 2 factory-built fireplace inspection guidance (PDF), revised April 5, 2019; checked October 27, 2026. It is a professional reference, not instructions for a homeowner roof inspection.

Do not treat all replacement parts as interchangeable

CSIA’s homeowner guide emphasizes identifying the manufacturer and model before ordering replacement parts for a factory-built system. Keep any existing manual and installation paperwork available for the assessment.

If the model is unknown, say so in the enquiry. Ask the provider how it will be established and how the proposed replacement will be checked for suitability. Do not select a part from its appearance or dimensions alone, and do not climb onto the roof or dismantle equipment to identify it.

Use a five-question proposal check

Before approving work, ask for answers you can keep with the report:

• Which part? The proposal should identify the component and the system it belongs to.
• Which finding? Ask for the observation, its location and the supporting photograph or report reference.
• Which proposed replacement? Ask what is being specified and how suitability for the system has been established.
• Which related work? Ask whether nearby components or investigation of water damage are included or excluded.
• Which completion record? Ask what documentation will describe the work completed and any remaining recommendations.

These questions do not establish that replacement is necessary. The professional assessing the system determines the conclusions and the appropriate scope.

Keep a leak enquiry attached to the findings

If you requested service because of dripping or a stain, ask how the report addresses that original concern. Record what is confirmed and what remains uncertain. A proposed top-component replacement should not leave you guessing whether further assessment is recommended.

Our chimney leak guide helps organize observations to share. For a masonry chimney, a different terminology question may apply: our cap versus crown guide covers that distinction. Ask the provider which explanation applies to your system.

Use our inspection report guide to connect the findings, limitations and proposed next steps in one record.

Start with the records you already have

For a New York chimney inspection enquiry, include your ZIP code, the fireplace type if known and a brief description of the concern. Mention any report that refers to a chase cover, cap or rust, and share the manufacturer or model if it appears in your records.

Ask Brickhaven to confirm the available assessment scope. You do not need to choose a replacement before starting the conversation; begin with a clear identification of the system and the finding.

Your questions, answered.