Inspection service guide
Chimney Leak Diagnosis
Follow evidence across the cap, crown, flashing, masonry, chase and nearby roof before choosing a repair.
What the service involves
Start with a defined scope
Leak diagnosis connects timing and location of moisture to possible entry paths. The cap, crown, flashing, masonry, chase cover, condensation and adjacent building components may all be relevant. Diagnosis should precede a broad repair recommendation.
Routine maintenance, condition assessment and repair are separate scopes even when one company can perform more than one. Ask the professional to distinguish what is included today from work that would require a separate authorization.
When to discuss it
Reasons a homeowner may request this service
- Stains appear after rain or snowmelt
- The firebox smells damp
- Masonry shows efflorescence or spalling
- Prior sealing did not resolve the symptom
Scope checklist
Details that can change the work
- Symptom timing and moisture map
- Exterior termination and masonry
- Roof-to-chimney interfaces
- Attic or interior evidence
- Test limitations and repair priorities
Before hiring
Questions to ask the professional
- Which entry paths were considered?
- What evidence supports the proposed repair?
- Could another roof or building component be involved?
- How will recurrence be documented?
Clear answers
Leak diagnosis questions
Does every chimney sweep company provide leak diagnosis?
No. Company scopes, equipment and qualifications vary. Confirm the exact service, technician experience and service area before booking.
How should I compare proposals for leak diagnosis?
Give each provider the same property details and requested outcome. Compare observations, included work, access, materials, documentation, exclusions, price basis and warranty.
Can this page tell me what my chimney needs?
No. This is general preparation guidance. A qualified professional must assess the appliance and chimney on site.