Trace & access · Loss-adjuster format · All UK insurers
Insurance Claim Leak Detection London
Loss-adjuster-format survey reports for escape-of-water claims. Radiometric FLIR images, moisture-mapped floor plan, WRC drain reports where required. Accepted by Aviva, Direct Line, LV=, Zurich, Allianz, RSA, Admiral, Churchill, AXA and More Than.
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Insurance trace and access — the process behind the £5,000 benefit
Every mainstream UK household insurance policy includes a trace-and-access allowance within escape-of-water cover — typically £5,000, ring-fenced for locating and accessing the source of a hidden leak. The idea is straightforward. When a leak causes damage but the leak itself is hidden behind walls, under floors, or in ceiling voids, the cost of finding it is separately compensated from the cost of repairing the water damage. That separation matters because the trace can be expensive on complex leaks — full-method surveys, multi-visit investigations, opening structures for confirmation — and insurers do not want policyholders skimping on the diagnosis and ending up with an under-scoped repair.
The mechanism is a written engineer report. The loss adjuster reviews the report against the policy trace-and-access allowance and authorises the spend — typically refunding the survey fee the policyholder paid upfront, plus authorising the follow-up repair scope. Where the report is written to the specification loss adjusters expect (radiometric FLIR images, moisture-mapped floor plan, method log, engineer credentials), the authorisation is routine and settles within 2–4 weeks. Where the report is thin — a colour thermal picture, no floor plan, no engineer certificate — the loss adjuster comes back with follow-up questions that delay the claim by weeks and can result in the trace-and-access spend being disputed.
Our reports are written specifically to what loss adjusters at Aviva, Direct Line, LV=, Zurich, Allianz, RSA, Admiral, Churchill, AXA and More Than expect. The format has evolved from repeated experience across hundreds of London claims. Every report includes the seven elements the loss adjuster needs to authorise the spend without follow-up: annotated moisture-mapping floor plan, radiometric FLIR .jpg with companion CSV files, tabulated moisture readings, sequential method log, pipe material identification, itemised recommended remedial scope, and engineer credentials (WaterSafe, G3, public liability). Because these are all included as standard, on the majority of our claim surveys the loss adjuster authorises the spend on the first read.
Every insurance-claim survey we deliver is by a Water Regulations 1999 competent engineer (UK Certification Ltd certificate 136356 issued 8 September 2025, expiry 18 August 2030) with G3 unvented hot water certification (certificate 136359, same date range). Public liability £5,000,000 via SiriusPoint through Eaton Gate MGU, policy BE26ACTT000000018221, period 07/05/2026 to 06/05/2027.
The six-stage claim workflow — damage discovered to repair authorised
The end-to-end process from noticing the damp patch to the insurer authorising trace-and-access and reinstatement.
Damage discovered — do not open walls or ceilings yet
You spot the damp patch, the buckled floor, the ceiling drip. Instinct is to open the ceiling to see where the water is coming from. Wait. Insurers expect the leak to be located by a competent engineer using non-destructive detection methods before any structural opening — opening the ceiling yourself will not accelerate the claim and may complicate the trace-and-access spend authorisation.
Report the damage to your insurer for a claim reference
Open the claim with your insurer as soon as the damage is visible. You do not need to have located the leak to open a claim — the claim reference is what the loss adjuster uses to authorise the trace-and-access spend for the leak detection survey. Most standard household policies include trace and access as a component of escape-of-water cover, typically £5,000 ring-fenced for locating the leak.
AK survey with the full method suite
Acoustic listening, thermal imaging, moisture mapping, plus CCTV on wastes where drainage is a suspect. The engineer follows the disciplined survey protocol (isolation → baseline → conditioning → sweep → confirmation) and records every reading in a survey file. All FLIR images are radiometric with embedded metadata plus companion CSV files. Every survey visit produces a written report within 24 hours.
Loss-adjuster-format report emailed to you and the insurer
The written report includes: annotated moisture-mapping floor plan with the leak location marked, radiometric FLIR images, method log showing every step, pipe-material identification, recommended remedial scope with costed itemised quote, engineer credentials (WaterSafe, G3), insurance certificate. Formatted specifically to what loss adjusters at Aviva, Direct Line, LV, Zurich, Allianz, RSA expect. You email it to your insurer with the claim reference.
Loss adjuster reviews and authorises trace-and-access
The loss adjuster reviews the report against the policy terms. Trace and access is authorised — this typically covers the survey fee retrospectively (you paid it upfront, insurer refunds it) plus authorisation for the follow-up repair scope. Where the loss adjuster wants to interview the survey engineer directly we make the engineer available by phone or on-site.
Repair, drying, reinstatement
AK completes the leak repair (usually a same-visit continuation of the survey once the leak is located and the customer authorises the repair scope). Drying (dehumidifiers, air movers) and reinstatement (ceiling replastering, flooring replacement, redecoration) are handled by an approved damage-management contractor coordinated by the insurer. Full property back to normal in weeks not months, with the paperwork in order.
Loss adjusters — how each mainstream UK insurer handles trace and access
Every survey report we issue is formatted to what the loss adjuster at the mainstream UK insurers expects. Here is how each major insurer typically handles trace and access on an escape-of-water claim.
Aviva
Standard trace and access £5,000 (higher on the "Home Plus" product). Report must include moisture readings, method log, and pipe-material identification. Our reports accepted as-issued without follow-up questions on all recent claims.
Direct Line
Standard trace and access £5,000 (£10,000 on the "Home Plus" product). Requires leak location marked on a floor plan plus photographic evidence of moisture patches. Our reports include both as standard.
LV=
Trace and access £5,000 (£10,000 on "Home Plus"). Loss adjuster typically pre-approves our engineer's recommended repair scope from the written survey report — no separate repair estimate required.
Zurich
Trace and access £5,000 standard, £10,000 for high-value homes. Prefers the loss adjuster to interview our engineer once the survey is complete — we make the engineer available by phone or on-site.
Allianz
Trace and access £5,000 (product-dependent). Requires a WRC-compliant CCTV report on any drainage-related leak — included as standard on our surveys where drainage is a suspect.
RSA / More Than
Trace and access £5,000 standard on More Than. Prefers itemised cost breakdown separating detection from repair — our invoicing structure supports this by default.
Admiral
Trace and access £5,000 standard household policy. Accepts our written survey report and radiometric FLIR images without further verification.
Churchill
Trace and access £5,000 standard. Common insurer for London terraces and mansion block leaseholds — process routine.
AXA
Trace and access £5,000 or higher depending on product tier. Loss adjuster often requests our engineer certificates (WaterSafe, G3, public liability) with the survey report — supplied by default.
What is in the report — the seven elements loss adjusters need
Every insurance-claim report we produce includes the seven elements below. Together they are what the loss adjuster needs to authorise trace and access without follow-up questions.
Annotated floor plan
Property floor plan with the leak location marked, XY offsets from a fixed reference (wall corner, doorframe), and the survey scan trajectory annotated. Standard PDF format that loss adjusters can print and file.
Radiometric FLIR images
Every thermal image saved as a FLIR .jpg with embedded temperature metadata plus a companion .csv file of raw pixel readings. The loss adjuster can re-analyse the images in their own copy of FLIR Tools weeks after the survey.
Moisture mapping readings
Protimeter Surveymaster capacitance and pin readings at every point of interest, tabulated with location references. Shows moisture spread pattern for the loss adjuster to assess the water damage scope.
Method log
Sequential log of every survey step: system isolation, pressure test result, baseline captured, conditioning time, acoustic sweep result, thermal sweep result, moisture confirmation. Timestamps on every entry.
Pipe material identification
The leak-side pipe identified by material (copper, MDPE, PEX, lead, cast iron), diameter, and installation vintage where determinable. Loss adjusters need this to price the reinstatement scope.
Recommended remedial scope
Itemised repair scope with fixed-price quote — separate line items for detection, repair, drying scope estimate, and reinstatement scope estimate. Supports the loss adjuster in setting the trace-and-access authorisation.
Engineer credentials
Copy of WaterSafe certificate (Water Regulations 1999), G3 certificate (unvented hot water), and public liability insurance certificate. Required by nearly every UK household insurer on a trace-and-access claim.
Cost — insurance claim leak detection surveys
Every claim survey is quoted in writing before the engineer travels. The survey fee is normally refunded through the trace-and-access allowance on your household policy.
| Scope | Price (inc. VAT) | Includes |
|---|---|---|
| Insurance claim leak detection survey (single-family home) | £350–£500 | Full method-suite survey, loss-adjuster-format report within 24 hours, engineer credentials, insurance certificate. Trace-and-access refundable through the claim on most household policies. |
| Complex or multi-storey property survey | £450–£650 | Extended survey time, multi-zone thermal, comparative moisture mapping across floors |
| Communal riser / mansion block claim survey | £550–£800 | Riser sweep, freeholder-format report, per-floor pinpoint. Multi-leaseholder claim coordination. |
| Repeat survey / second opinion for existing claim | £400–£550 | Independent full-method survey where a first survey (by another firm) was inconclusive. Loss-adjuster-ready report regardless of previous outcome. |
| Emergency response survey (active leak, insurer instructing) | £450–£600 | Same-day dispatch, engineer on site within four hours, verbal briefing to loss adjuster on the day |
| Full trace + repair (all-in same visit) | Detection + repair separately quoted | Standard practice: survey fee (refunded under trace-and-access) plus repair fixed-price. Both itemised for the loss adjuster. |
Real London insurance-claim leak surveys
Three recent claim surveys, anonymised. Insurer, method, and trace-and-access outcome.
Aviva claim — Fulham Victorian conversion ceiling drip
Escape-of-water claim following a ceiling collapse in a first-floor lounge below an upstairs shower room. Loss adjuster authorised £3,000 trace and access. Full-method survey identified the leak at a soldered elbow inside the ceiling void, 1.8m from party wall — a slow drip over 4–5 weeks that eventually saturated the ceiling. Access hatch cut, elbow re-soldered same visit. Report submitted with radiometric FLIR images. Aviva refunded survey fee (£450) plus authorised £2,100 for drying and reinstatement.
Direct Line claim — mansion block communal riser leak
Fourth-floor flat reporting ceiling damp affecting three adjacent flats vertically. Loss adjuster on a shared-block claim (multiple policyholders) requested a coordinated survey. Riser thermal survey plus contact acoustic identified the leak at the fourth-floor landing behind plasterboard. Freeholder-authorised access, repair completed. Report distributed to all three affected policyholders via the loss adjuster. Direct Line settled all three claims from the single AK survey.
LV= claim — Wimbledon town-house underfloor heating leak
Escape of water reported under a ground-floor kitchen tiled floor. UFH loop pressure test confirmed a leak in the screed. Tracer gas survey pinpointed the leak location within 250mm. LV= loss adjuster pre-approved the recommended repair scope (single tile lift, keyhole screed opening, PEX push-fit repair, tile relay) from the written survey report — no separate repair estimate required. Repair completed within seven days of survey. LV= refunded £550 survey plus authorised £1,850 for the repair and screed reinstatement.
Insurance-claim leak detection across every London borough
Same loss-adjuster-format survey report across all 32 London boroughs plus the M25 fringe. Click a borough for a page tailored to local plumbing patterns.
Frequently asked questions about insurance-claim leak detection
What is a trace-and-access claim on my household insurance?
Do I have to pay for the survey upfront and claim it back?
Which insurers accept your reports without further verification?
What is a radiometric FLIR image and why does the insurer need it?
What if the insurer's own loss adjuster wants to interview your engineer?
Can you do the survey and the repair on the same visit?
What if I have a listed building or a Conservation Area property?
What if there is a dispute between me and the insurer over the claim scope?
What certifications do your leak detection engineers hold?
Do you carry public liability insurance?
Related plumbing services
Leak detection — main hub
Full explanation of every detection method and when each applies.
Acoustic leak detection
The first-pass method — used on every insurance-claim survey.
Thermal imaging leak detection
Radiometric FLIR method — the images loss adjusters require.
No find, no fee guarantee
Applies alongside insurance-claim surveys.
Book an insurance-claim leak survey
Loss-adjuster-format report within 24 hours. Trace-and-access refundable on most standard UK household policies.
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