Water Heater Failure, Mold, and the $5,000 Sublimit
In Sparks, a duplex owner has an HO-3 with dwelling coverage of $420,000 and a mold sublimit of $5,000. On January 12 a water heater in the upstairs unit bursts. Water soaks laminate flooring, baseboards, and the lower kitchen cabinets. The insured calls a restoration firm, which dries the structure but finds visible mold five days later behind the cabinets. The insurer pays $14,200 for tear-out and drying but denies all mold remediation and the cabinet replacement. The denial letter says the mold is excluded and the cabinets had "pre-existing wet rot" because the insured mentioned brown stains near the heater "for a few months." The insured says there was no leak before the burst. The estimate for mold is $7,800; cabinets are $6,400. The policy excludes constant or repeated leakage and has a $5,000 mold sublimit.
1. Is the mold remediation covered, and how should the adjuster respond to the insurer's reliance on "pre-existing wet rot"?
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The burst water heater is a sudden and accidental discharge, so the resulting water damage is covered. Mold is excluded as a general matter, but this policy has a $5,000 mold sublimit, which is a grant of limited coverage for mold resulting from a covered peril. The insurer should pay mold remediation up to $5,000, not zero, unless it can prove the mold came from excluded repeated leakage. The insurer's "pre-existing wet rot" assertion is not enough: brown stains and a statement about "a few months" do not establish constant seepage. The insurer bears the burden of proving an exclusion. The adjuster should demand the engineer's moisture readings, photos, and a breakdown separating pre-existing rot from new water damage.
2. Should the $6,400 cabinet replacement be paid? What if the policy had no mold sublimit and contained an absolute mold exclusion?
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The cabinets should be paid if they were damaged by water from the burst. Coverage depends on causation, not on the presence of some older staining. The insurer must prove that the cabinets were already rotten before January 12 and allocate any pre-existing damage. If the policy had an absolute mold exclusion and no sublimit, mold remediation would likely be excluded, but tear-out needed to access or repair covered water damage may still be covered. The adjuster should separate remediation from access and argue that the exclusion applies to mold itself, not to covered building damage. A contractor's report with moisture mapping and dated photos is the best evidence.
3. What documentation should the adjuster assemble before demanding payment?
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The adjuster should obtain the restoration firm's daily moisture logs, thermal images, photos showing the burst heater and affected cabinetry, the mold remediation protocol, and the cabinet estimate. The adjuster should also get a written statement from the insured about when the stains were first noticed and whether there was ever standing water. A causation report from a licensed contractor or engineer should distinguish new damage from old. The adjuster should send the insurer a written coverage demand citing the sudden-discharge coverage and the mold sublimit, and ask for a written coverage position within a reasonable time. Keeping a claim diary of dates and documents supports a later unfair-practice complaint if the insurer continues to deny without evidence.