Common Causes of Thatched Property Fires
Fire is the risk that defines thatched property insurance. The material itself, whether water reed, combed wheat reed, or long straw, is combustible in a way that tiles and slates simply are not, and once a thatched roof catches fire, the speed at which a fire can spread and the depth of material make containment extremely difficult.
Among the causes of domestic fires starting are chimneys and heating appliances. Embers and sparks escaping from flues are a leading cause of thatched property fires, particularly from wood-burning stoves and open fires. Electrical faults are the other significant cause, and older properties with ageing wiring are disproportionately represented in fire claims data. Fire represents a fraction of thatched property claims by number, but an overwhelming share of the cost.
Why Insurers View Thatched Properties Differently
Standard home insurers price fire risk on the assumption that the roof is made of non-combustible material. A thatched roof changes that calculation entirely. The thatch itself can act as fuel; the depth of material, particularly on older properties where successive re-thatching layers have built up, and the proximity of chimneys to combustible roofing material will impact underwriting decisions.
This is why thatched property insurance is placed with specialist insurers, assessed against a detailed risk framework, and subject to policy conditions which may not apply to standard home insurance. Those conditions are not designed to be a burden on the policyholder; they exist to help protect you and your home.
Chimney Maintenance and Sweeping Requirements
How Often Should a Chimney Be Swept?
For thatched properties with open fires, solid-fuel stoves, or AGA-type ranges, the policy condition attached to the John Albion scheme requires biannual sweeping. These are not suggested timings; they are policy conditions, and where the condition isn’t met, the insurer is not liable for smoke or fire damage arising from the use of that chimney.
Where a wood-burning or multi-fuel stove is in use, the stove should also be serviced annually before winter use.
Using a HETAS-Registered Chimney Sweep
The sweep must be a professional chimney sweep or a member of the National Association of Chimney Sweeps (NACS) as the qualifying standard. In practice, a HETAS*-registered sweep is also widely accepted. What matters is that the sweep is a qualified professional, not a general tradesperson who happens to offer sweeping as a service.
For properties with wood-burning stoves, a CCTV survey of the flue and liner is required at the point of new business and periodically thereafter, typically every five years unless concerns are identified that warrant an earlier inspection.
* HETAS (Heating Equipment Testing and Approval Scheme) is the official body for solid fuel heating and associated trades
Keeping Records for Your Insurer
Every sweeping visit should be documented. A dated certificate from the sweep, confirming the chimney has been cleaned along its full length and noting any observations about the condition of the flue, is the standard form of evidence. Keep these records from year to year. If a chimney-related claim arises and you cannot demonstrate compliance with the sweeping schedule, your insurer will investigate whether the condition was met before assessing the claim.
Chimney Liners and Flue Inspections
Our quote (and the renewal process) includes specific questions about whether chimneys are lined and insulated. An unlined flue on an older property can crack or degrade, creating a significant fire risk in any property and an acute one in a thatched building. If you plan to re-line an existing flue or install a new liner to serve a stove or appliance, please let us know before you proceed.
Find out more about thatched property insurance
Smoke and Heat Detector Requirements
The Difference Between Smoke and Heat Alarms
A smoke detector responds to airborne particles produced by combustion. A heat detector responds to a rise in temperature. For thatched properties, both types have a role, and the distinction matters because they perform differently in different environments.
In a kitchen, a smoke detector would trigger almost every time the grill is used; a heat detector is more appropriate. In a loft space, where a fire can take hold in the roof structure before smoke reaches the ground floor, early detection is essential, and a combined system is strongly recommended.
Recommended Locations for Detectors
The John Albion scheme requires at least one heat or smoke detector on each floor of the home, including one in the loft or as close to the loft hatch as possible. All detectors must be interlinked so that an alarm triggered in the loft activates the whole system. Additional detectors in rooms with higher ignition risk are sensible.
The loft detector is non-negotiable for thatched properties. In the early stages, a fire in the roof space may not produce visible smoke on the ground floor. By the time it does, the structural damage may be severe, and evacuation may be significantly more difficult.
Read more about Thatch Property insurance
Typical Insurer Requirements
Interlinked smoke and heat detectors, including in the loft, are a standard condition of policies we arrange. Recessed light fittings on the upper floor must be fitted with a fire-protection cover compliant with BS476: Part 23. External electrical lighting must not be located within 50 centimetres of the thatched roof unless it is a non-heat-producing type such as LED.
Testing and Maintenance
All fire detection and prevention equipment must be kept in full working order and maintained in accordance with the manufacturer’s guidelines. Detectors should be tested regularly and replaced according to the manufacturer’s recommended schedule, typically every 10 years.
Electrical Checks and EICR Certificates
Why Electrical Faults Are a Major Fire Risk
Electrical faults could cause domestic fires, and in thatched properties, the consequences of an electrical fire are significantly more severe than in standard construction. Older thatched properties often have ageing wiring that has not been formally inspected for many years, and the proximity of electrical installations to combustible roof materials means that a fault that might cause localised damage in a modern property can result in a total loss in a thatched one.
What Is an EICR?
An Electrical Installation Condition Report (EICR) is a formal assessment of the condition of the fixed electrical installation in a property, including the wiring, consumer unit, sockets, switches, and associated components. It is carried out by a qualified electrician registered with a competent person scheme and results in a report grading the installation against the current edition of BS 7671, the wiring regulations. The report will identify any observations requiring action and grade them C1 (danger present), C2 (potentially dangerous) or C3 (improvement recommended).
How Often Should Electrical Inspections Be Carried Out?
The John Albion policy condition requires electrical wiring to be inspected at least once every ten years, or more frequently if an approved electrical contractor advises it. The approved contractors are those registered with NICEIC, NAPIT, ECA, BSI or STROMA. At a practical level, many qualified electricians recommend a five-year cycle for older properties, and the age and condition of the wiring are the determining factors.
Keeping Evidence of Compliance
You must provide a copy of the test report to the insurer once the inspection is complete. This part of the record-keeping process is essential and shouldn’t be overlooked.
Where an EICR has not been completed, and the electrical wiring and circuits contributed to a fire, the insurer shall exclude the fire claim until a satisfactory report has been received and all recommendations implemented. In other words, failure to complete the required inspection can result in a fire claim being declined.
What to learn more? Speak with the team: 01603 788050
What Happens if You Breach Policy Conditions?
Common Conditions Applied to Thatched Properties
The conditions attached to a specialist thatched property policy go beyond the standard terms of a household insurance contract. In addition to the chimney sweeping, detector and electrical wiring conditions already covered, the following are common conditions for thatched properties:
- Inspection – the thatched roof itself is inspected once every ten years by a qualified thatcher, and that specific fire precautions are always maintained in the home. Insurers prefer that a 60-minute fire barrier be under the thatch, but it is not essential.
- The fire precautions condition requires at least one fire blanket in the kitchen, at least one foam, water, or water-mist extinguisher in the kitchen, and at least one extinguisher on every other floor. Dry powder extinguishers are no longer recommended for enclosed spaces and should be replaced with an approved type as soon as possible.
There are also restrictions on activity in and around the property.
- Bonfires and incinerators must not be lit within 100 metres of the home.
- Barbecues, fire-pits and chimineas must not be operated within 5 metres.
- Naked flames and tools producing naked flames must not be used in the attic or loft space, or within 5 metres of the thatched roof.
How Non-Compliance Can Affect a Claim
Breach of a policy condition can result in a claim being declined in whole or in part. The policy conditions are contractual terms that form part of the insurance contract. Where a condition is breached, and that breach is relevant to the cause or extent of a loss, the insurer is entitled to decline the claim or reduce the settlement.
Some common scenarios are chimney sweep records that cannot be produced, overdue EICR inspections, or fire precaution equipment that is not in place.
It is worth being clear on one point: an insurer need not prove that the breach caused the loss in every case; they may be entitled to decline coverage where the condition was not met, regardless of the specific causal chain.
The Importance of Accurate Disclosure
The proposal form and statement of facts form the basis of the insurance contract. Where information provided at inception or renewal is inaccurate or incomplete, the insurer has grounds to void the policy or decline a claim. If you are in any doubt about whether something is relevant, the right approach is to disclose it. Our experienced team will know what to do.
Practical Fire Safety Checklist for Thatched Property Owners
Copy and print this guide to help you check you’re in a good spot from an insurer’s point of view, in terms of thatch fire prevention.
| Chimneys and Heating Systems | Complete | Date |
| Chimneys swept by a qualified professional at least twice annually (between July–October and January–March) | ||
| Wood-burning or multi-fuel stoves serviced annually before winter use | ||
| Chimney flues inspected by CCTV survey as required (typically every five years for stoves) | ||
| Chimney liners intact, insulated and fit for purpose | ||
| Sweeping certificates retained and dated | ||
| Electrical Safety | ||
| EICR completed within the last ten years (or more recently if advised) | ||
| EICR carried out by a contractor registered with NICEIC, NAPIT, ECA, BSI or STROMA | ||
| All C1 and C2 observations from the EICR addressed and documented | ||
| Recessed heat-producing light fittings on upper floors fitted with BS476: Part 23 fire protection covers | ||
| External lighting within 50 centimetres of thatch replaced with non-heat-producing LED type | ||
| Fire Detection | ||
| Interlinked smoke and heat detectors on every floor, including the loft | ||
| Detectors tested monthly | ||
| Detectors replaced on the manufacturer’s recommended schedule | ||
| Property Maintenance | ||
| Thatched roof inspected by a qualified thatcher at least every ten years | ||
| 60-minute fire barrier under the thatch confirmed and maintained | ||
| No bonfires or incinerators within 100 metres of the property | ||
| No barbecues, fire-pits or chimineas within 5 metres of the property | ||
| No naked flames or heat-producing tools used in the loft space or within 5 metres of the thatch | ||
| Seasoned firewood stored outside, sheltered but ventilated, at least 2 metres from stoves and fireplaces | ||
| Documentation | ||
| Chimney sweeping certificates (current and previous years) | ||
| EICR with completion date and any remedial work certificates | ||
| Thatch inspection report | ||
| CCTV flue survey report (where applicable) | ||
| Fire precaution equipment maintenance records |
Ready to get a quote? Click here
What To Do Immediately After a Thatched Property Fire
Step 1: Ensure Everyone’s Safety
Get everyone out of the property immediately, including pets. Do not re-enter the building for any reason until the fire service has confirmed it is safe to do so. Thatched property fires can reignite hours after they appear to be extinguished, and the fire service will typically remain at the scene for an extended period.
Step 2: Contact Emergency Services
Call 999. The fire service should attend any thatched property fire, even one that appears minor. A fire that begins in or near the thatch can spread rapidly, and early intervention by the fire service is essential.
Step 3: Notify Your Insurer
Contact John Albion as soon as you can safely do so. The claims contact number is 01603 852045. You are required under the terms of your policy to notify the insurer as soon as reasonably possible after an incident likely to lead to a claim. Prompt notification allows the insurer to instruct a loss adjuster and, where necessary, to arrange emergency weatherproofing or alternative accommodation.
Step 4: Protect the Property from Further Damage
Once the fire service has confirmed the property is safe to approach, take reasonable steps to prevent further damage, for example, covering exposed areas with tarpaulins to protect against weather ingress. Keep receipts for any emergency work carried out; these costs may be recoverable under the policy. Do not authorise any permanent repair work until the insurer’s loss adjuster has inspected the damage and given authorisation to proceed.
Step 5: Gather Evidence and Documentation
Photograph the damage as thoroughly as possible before any temporary repairs are made. Retrieve your policy schedule, chimney-sweeping records, EICR, and any other maintenance documentation. Your insurer will ask for these and having them readily available will help the claims process. It’s wise to keep an electronic record of these documents, if you can, in case paper records are lost or damaged.
Frequently Asked Questions
How often does a thatched roof need to be inspected?
The John Albion policy condition requires a formal inspection by a qualified thatcher at least once every ten years, or more frequently if the thatcher advises it. In practice, many owners have their roof assessed informally more regularly as part of routine maintenance discussions with their thatcher. A roof in poor condition is a material fact that should be disclosed to your insurer, and a formal inspection report provides the documented evidence that the condition has been met.
Will my insurer require a HETAS sweep certificate?
Yes, the insurer will require a certificate from a member of the National Association of Chimney Sweeps or a professional chimney sweep. HETAS-registered sweeps are widely accepted in practice. What your insurer is looking for is evidence that the sweep was carried out by a qualified professional, not a dated receipt from a general tradesperson. Ask your sweep for a formal, dated certificate at every visit and keep it on file.
Can I install a wood-burning stove in a thatched property?
Yes, but your insurer must be notified before work begins, not after. We require advance notice of any changes to heating arrangements involving a chimney for burning wood or coal. Full details of the proposed chimney use and liner specification must be provided in advance. Installing a stove and informing the insurer retrospectively could invalidate your cover for the period between installation and notification.
Will my insurance be invalid if I miss a chimney sweep?
If the chimney sweep condition is breached, the policy states that the insurer is not liable for smoke or fire damage arising from the use of that chimney. In practice, the condition requires sweeping twice annually between specific calendar windows. Missing a sweep does not automatically void the entire policy, but it does create a specific exclusion for fire and smoke claims related to that chimney for the period when the condition was not met.
Does having a thatched roof make insurance more expensive?
Yes. The fire risk profile of a thatched property is materially different from that of standard construction, and the reinstatement costs, particularly for listed properties or those with thatched roofs, are significantly higher than a standard property rebuild. Premiums reflect the genuine complexity of the risk, which is why thatched property insurance is placed with specialist insurers rather than the mainstream market. The right policy at an accurate sum insured is considerably more valuable than the cheapest available option at a sum insured that does not reflect the true rebuild cost.
Do all insurers require a spark arrestor?
Spark arrestors are a more complicated subject than they might appear. While they offer a degree of ember containment, many specialist insurers are cautious about relying on them because a spark arrestor that isn’t cleaned and maintained properly can become blocked, reducing flue draw and potentially creating a greater hazard than no arrestor at all. For that reason, we prefer that they not be fitted, but other insurers may take a different position. Read more about spark arrestors and insurance here.
Protecting Your Thatched Property
If you own a thatched property, understanding and complying with your insurer’s fire safety requirements is essential. Regular maintenance, documented inspections and adherence to policy conditions can help keep your home protected and ensure your cover remains valid.
Speak to the John Albion team at Jensten Insurance Brokers (East) Limited for advice on arranging suitable insurance for your thatched property. Give the team a call on 01603 788050; they’d love to help you. If you want to know more about preparing your home before you get a quote, read this list of 7 things to consider when insuring your thatched property.