Investigation before repair
What the scope should cover
Separate investigation from corrective work. Discuss the cap, crown or chase cover, masonry, flashing and adjacent roof as possible inspection areas. Access and weather may limit what can be established in one visit.
What to keep after the visit
Ask for a written explanation of likely entry paths, photographs and remaining uncertainty. Agree how the result will be checked and who to contact if moisture reappears.
The question worth asking
“What finding connects this repair to the water I see indoors?”
Ask for the answer in the written scope. If the work changes after access or inspection, request a revised scope and price before approving the additional work.
Prepare without taking risks
Save dated pictures of stains and note whether they follow rain, snowmelt or appliance use. Avoid repainting until the source has been assessed.
Confirm appointment access, who will be present and what records to have ready. Preparation does not mean dismantling the appliance, climbing the roof or reproducing a dangerous symptom.
Compare companies for this particular job
- Confirm experience with your chimney type and appliance model. A company that cleans masonry fireplaces may not service every gas or pellet appliance.
- Ask who performs the work, what credentials apply to that person and how you can verify them with the issuing organisation.
- Check current insurance and any local licensing or permit requirements directly. A profile badge is not proof of every qualification.
- Compare access, materials, diagnostic work, disposal, exclusions and follow-up. A lower total can represent a smaller scope.
Read the detailed homeowner guide
The service brief helps you commission the visit. Our longer guide explains terminology, system differences, examples, FAQs and its supporting sources.
Read the full chimney leak diagnosis guideSafety background: USFA, CPSC and recognised industry resources. These buying questions are editorial guidance, not installation instructions or an assessment of your home.
Connected symptoms and examples
Make the written proposals comparable
Ask each company to answer the same scope questions. A higher or lower price may reflect different work, access or deliverables.
- Pattern
- Record rain direction, timing, snowmelt or appliance use when the moisture appears.
- Investigation boundary
- Ask whether roof, flashing, crown, cap, chase and adjacent building areas are included.
- Finding versus hypothesis
- Require the report to distinguish an observed entry route from a suspected cause.
A misunderstanding worth avoiding
A stain near a fireplace does not by itself identify the cap, crown or flashing as the cause.
A question homeowners ask
Should diagnosis and repairs be separate line items?
A clear separation helps you understand what is being investigated before you authorize a remedy. Ask what the investigation can establish, what remains uncertain and whether further access or another trade may be necessary.
The record to keep for the next visit
Keep dated photographs, the investigation report and the repair scope. Agree what to observe after the work and who to contact if the pattern returns. Avoid concealing the evidence with finishes before the cause has been addressed.
Build an evidence and follow-up recordTake the service question to your location
Use the local guide to prepare questions about access, building history and the authority responsible for your address. The service brief is national guidance; local permits and current burn restrictions must be checked separately.