Termites, pests, wear and tear: the maintenance exclusions

A homeowners policy does not pay to repair damage from termites, other insects, rodents, rot, rust or ordinary aging. The standard ISO HO-3 treats these as maintenance problems rather than insured events and excludes them by name. The policy can still respond to what happens next: water that escapes from a pipe a rodent chewed, a fire that follows, or a sudden collapse of a floor eaten out from inside by hidden insect damage.

What the HO-3 actually excludes

In the ISO HO 00 03 05 11 form, the Perils Insured Against section for the dwelling and other structures (Coverages A and B) is open perils, subject to a list of exclusions. Paragraph 2.c.(6) lists the ones that matter here:

Separately, the form excludes mold, fungus and wet rot (with a limited exception for hidden mold behind walls from a covered water release; see does homeowners insurance cover mold?), and excludes loss to the dwelling caused by faulty or inadequate maintenance. The neglect exclusion is different: it concerns failing to protect property after a loss has already happened.

Insurance regulators and industry groups describe this the same way. The Insurance Information Institute says a homeowners policy will not cover damage from lack of maintenance, mold, or infestation by termites or other pests, and expects owners to take reasonable precautions (Triple-I). The Texas Department of Insurance says that if rodents and insects chew on your house, your policy will not pay for the repairs, and that damage that develops over time, like rotted boards or worn roofs, is not paid (TDI). Your own policy and your state's amendatory endorsements control.

The logic: insurance is for sudden events

Insurance prices risk that is unlikely and unpredictable. A termite colony, a rotting sill or a roof at the end of its life is close to the opposite: the damage is gradual, mostly foreseeable, and largely preventable by inspection and upkeep. If insurers paid for it, every premium would have to include the cost of everyone's deferred maintenance. That is why the language is all about gradual processes and why adjusters hunt for the date the damage began. The same line between sudden and gradual drives water claims; see sudden vs gradual water damage: where insurers draw the line.

What can still be covered: ensuing loss and collapse

The exclusion usually stops at the pest or the deterioration. It does not necessarily stop at everything the pest or deterioration sets off.

Ensuing loss. The HO-3 states that under its exclusions in paragraphs 2.b. and 2.c., "any ensuing loss" to Coverage A and B property that is not precluded by another provision is covered. And an express exception to the c.(6) list covers loss from accidental discharge or overflow of water or steam from a plumbing, heating, air conditioning or sprinkler system or household appliance on the premises, including the cost to tear out and replace part of the building to repair the system. The system or appliance itself is not covered. So:

• A mouse chews through a supply line, the line discharges water, and the drywall and flooring are soaked. The water damage is generally the insurer's problem, less your deductible. The pipe and the pest control are yours.
• A rodent gnaws wiring and a fire follows. The exclusion applies to the rodent damage, and the ensuing-loss clause is your basis for asking the insurer to pay for the fire. Outcomes vary, and you should expect an investigation.
• A rusted water heater tank splits. The tank is excluded as corrosion; the water damage to the building is generally covered.

Hidden insect damage and collapse. The Additional Coverage for collapse pays for an abrupt collapse caused by, among other things, insect or vermin damage "hidden from view," unless an insured knew about it before the collapse. Two conditions limit it. The collapse must be abrupt, meaning a falling down or caving in that leaves the building or part of it unfit to occupy for its intended purpose. And damage to fences, patios, decks, pavement, septic tanks, foundations and similar items is not covered unless it directly results from the collapse of a building. A sagging, termite-weakened floor that is still standing is not a collapse. See collapse coverage: what counts as a collapse.

Termite damage in practice

Say a contractor opens a kitchen wall and finds termite tunnels through the framing, a $12,000 repair estimate (hypothetical). The policy pays nothing for the repair. Treatment is your cost, and a termite service contract or bond may promise retreatment or repair; read what it guarantees, how it defines "damage," and whether it transfers when you sell.

Now say the same house has a bathroom floor with hidden insect damage that gives way one morning, dropping the tub into the room below. That is closer to the collapse coverage, and the first question will be whether anyone knew about the damage before it happened. This is why the facts of discovery matter.

Three habits protect you:

1. Treat evidence of live activity promptly. An insurer reading an inspection report that shows known termite damage left unrepaired can point to the "known to an insured" language and the maintenance exclusion.
2. Keep the inspection records. Wood-destroying insect inspection reports at purchase, annual treatment invoices and repair receipts show the history if a date of discovery is disputed.
3. Get the cause in writing. If a structure collapses or water escapes, ask the adjuster which exclusion is being applied and which facts support it.

Wear and tear on roofs and other components

Wear and tear causes the most friction on roofs. After a storm, the insurer may agree there is hail damage and still deny part of the roof as pre-existing wear. A thin line separates a storm-damaged shingle from a worn one, and a roof inspection or an independent contractor's report can matter. Older roofs are often paid on a depreciated basis or under a payment schedule, which is a settlement term, not the wear-and-tear exclusion; see roof age limits: when insurers won't cover an old roof and hail damage claims: roofs, siding and windows.

For appliances and HVAC, the mechanical breakdown exclusion applies. Appliance and HVAC breakdown: insurance or warranty? covers what insurance does and does not pay there, and homeowners insurance vs a home warranty: what each one pays for covers the contract that targets breakdowns.

What the exclusions mean for underwriting

An insurer can use the same facts at the front door. The Texas Department of Insurance warns that insurers may charge more or decline coverage if a home is in poor condition. A visible roof near the end of its life, active pest damage or a deferred repair noted in an inspection can lead to a higher premium, a required repair, or a nonrenewal. See home maintenance that keeps you insurable.

Key takeaways

• The HO-3 excludes termites, other insects, rodents, rot, rust, corrosion, wear and tear, mechanical breakdown and settling by name.
• Resulting damage may be covered: water from a pipe a pest chewed, a fire that follows, and ensuing loss in general, subject to your deductible.
• Hidden insect damage can support an abrupt collapse claim, but only if the collapse is abrupt and no insured knew of the damage beforehand.
• Keep inspection reports, treatment invoices and photos; they establish when damage was discovered and that you maintained the home.
• Check your own policy and endorsements, because insurer forms and state rules vary.