Is Your Chimney Safe? A Homeowner's Guide to Annual Chimney Inspections in Dorset
From what a standard sweep and inspection covers, to when you need a full CCTV survey — this guide explains the process clearly so you know exactly what you're getting and why it matters.
In this article
Why an Annual Inspection Is Not Optional
Most people know they should have their chimney swept once a year. Fewer realise that a good sweep includes a basic safety inspection — and that this inspection, while useful, has limits. A standard visual sweep check can spot obvious structural problems and confirm that the flue is drawing, but it cannot see inside the liner or assess the full length of the flue.
For many properties in Poole, Bournemouth and Dorset — where Victorian and Edwardian homes are the norm — the chimney flue may be 100+ years old and never had a proper inspection at depth. The risks that come with an unknown-condition flue are real: carbon monoxide through liner cracks, chimney fires from undetected creosote, and structural failure from advanced deterioration.
This guide explains what a standard inspection covers, when a CCTV survey is the right next step, and how to make sure the person carrying out your inspection is genuinely qualified to do so.
Key fact: A CCTV flue survey is not the same as a standard sweep and inspection. Most annual sweeps do not include a camera survey. If your property has a complex, unknown or long-unserviced flue, ask specifically for a CCTV survey — it typically costs £80–£150 in addition to the sweep.
Typical inspection costs (Poole & Dorset)
- Sweep + visual inspection£60 – £100
- CCTV flue survey (standalone)£80 – £150
- Sweep + CCTV survey combined£130 – £220
What a Standard Chimney Inspection Covers
A sweep from a HETAS-registered engineer should always include these elements as a minimum. If your sweep does not include all of these, ask why.
Visual external check
The stack, pots, cowls, flaunching and mortar joints are visually assessed from ground level and, where access is safe, from the roof. Spalling, cracks, loose pots and failed pointing are identified.
Smoke draw test
A smoke pellet or draw test confirms that air is moving correctly up the flue and that there are no backdraught or blockage issues. This is a basic safety check that should be part of every sweep.
Flue check
The accessible parts of the flue are inspected for condition using a torch and mirror where possible. For a thorough assessment of the full liner, a CCTV survey is required — this isn't included in a standard sweep.
Structural assessment
The chimney breast, fireplace opening or stove installation is assessed for any visible structural concerns — cracking, movement, damaged lintels or inadequate fireside protection.
Appliance condition
The condition of the stove, register plate, door seals and rope gaskets is checked. These items wear out over time and affect both efficiency and safety. We'll note anything that's due for replacement.
Certificate issued
At the end of the inspection and sweep, a written certificate is issued detailing the findings, the date, and any recommendations. This is your insurance document and your record for future reference.
When Do You Need a CCTV Flue Survey?
A camera survey sends a small waterproof camera through the full length of the flue, recording video evidence of the liner condition from top to bottom. Here are the situations where it is genuinely necessary.
You're buying a property with a chimney or stove
You have no sweep history and no knowledge of what the flue contains. A CCTV survey before exchange gives you objective evidence of condition and a potential negotiating point if remedial work is needed.
You've had recurring issues — smoke, leaks or blockages — that sweeping hasn't resolved
A recurring problem usually has a structural cause. CCTV will show whether there is a crack, a displaced flue brick, a collapsed section, or a restriction that a sweep brush cannot reach.
You want to install a new stove or change fuel type
Before installing any new appliance, the liner must be assessed. A CCTV survey confirms whether the existing liner is the correct grade and size for the new appliance, or whether it needs relining.
The property has no history of sweeping or the history is incomplete
Without knowing what the flue has been used for or when it was last serviced, a visual survey alone is insufficient to confirm it's safe to use.
HETAS vs. Guild of Master Sweeps — What's the Difference?
Both HETAS and the Guild of Master Sweeps are widely recognised industry bodies in the UK. Both require members to demonstrate competence and adhere to professional standards. Certificates from both are accepted by most home insurers.
HETAS (Heating Equipment Testing and Approval Scheme) is the government-recognised body for solid fuel heating. HETAS registration covers both sweeping and appliance installation — so a HETAS engineer can legally carry out a stove installation and self-certify the work under Building Regulations.
The Guild of Master Chimney Sweeps is a sweeping-specific membership organisation with its own training and audit programme. Guild members are qualified sweeps but may not carry HETAS installation certification.
If you need only a sweep and inspection, either body's registered engineers are appropriate. If you also need stove installation or any work that requires Building Regulations self-certification, you need a HETAS-registered engineer.
What to do if problems are found
- 1. Read the sweep certificate advisory notes carefully. "Advisory" items are not urgent — "Do not use" means exactly that.
- 2. If you have been told not to use the appliance, do not use it until the issue has been rectified and re-inspected.
- 3. Get a written quotation for any recommended repair work. You are not obliged to use the same company that performed the sweep.
- 4. Once repairs are complete, book a follow-up inspection to confirm the issue has been resolved and obtain an updated certificate.
Booking in Poole or Dorset: We cover Poole, Bournemouth, Christchurch, Wimborne, Wareham and the surrounding area. We typically book within 1–2 weeks, with faster availability in late summer before the autumn rush. Call us or use the contact form to arrange a sweep and inspection.
Book your chimney inspection
HETAS-registered inspections across Poole, Bournemouth and Dorset. Written certificates issued on the day. CCTV surveys available where needed.