What Perils Are Not Covered on a Homeowners Policy?
Flood, earthquake, and routine wear or neglect are standard exclusions, along with sewer backup and pest damage unless added separately.
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What this means for a claim already in motion
If an adjuster has already looked at the damage, the first thing to check is which exclusion they're pointing to, because that changes what happens next. A denial for flood or earthquake usually ends there, since those need separate policies entirely. But a denial for "wear and neglect" or "long-term moisture" is often an argument about cause, not a fixed fact. Insurers sometimes label gradual damage as neglect even when a sudden event, like a burst pipe or storm, started it. That's worth pushing back on, since the triggering event may be covered even if the end result looks like wear. Your declarations page and the exclusions section of your policy will say exactly what's excluded for you. If the adjuster's reasoning doesn't match that wording, you can ask for a reinspection or a second opinion before accepting the offer.
Policies covering the same house can differ in how they word these exclusions, and that wording is often what decides a disputed claim. One insurer's sewer backup add-on or water damage definition can be broader than another's, and a denial under one policy might have been a paid claim under a different one. Comparing coverage now, before the next loss, shows where those gaps sit.
What happens if the damage falls on both sides of an exclusion
Some losses do not fit neatly into one category. A storm knocks a tree branch into the roof, water gets in, and by the time anyone notices, there is mold along the ceiling. The storm and the branch are covered. The mold might not be, depending on how long the water sat and what your policy says about resulting damage. The insurer is making two decisions here, not one. First, what caused the loss. Second, how much of the damage followed directly from that cause versus from something else, like delayed repairs or existing moisture.
Adjusters are trained to separate these pieces, and the report should say where the line falls. If it does not, ask. A reasonable question is what portion of the damage is attributed to the covered event and what portion is attributed to the exclusion. Insurers sometimes pay for the opening the branch made and the drywall immediately behind it, but deny the mold remediation as a separate, excluded problem. Whether that split is fair depends on how fast the damage was reported and whether anything could have been done to stop it from spreading. That is why documentation from right after the event matters more than photos taken weeks later.
If part of the claim is covered and part is denied, you do not have to accept the split as final. You can ask the adjuster to walk through their reasoning in writing, and you can bring in your own contractor or public adjuster to give a second estimate that separates the causes differently. Some policies also have an appraisal clause, a process where both sides bring in independent estimators to settle a disagreement on the amount of a covered loss. This does not help if the dispute is about whether something is covered at all rather than how much it costs.
Keep in mind that even a partial denial affects what you pay out of pocket, not just what gets fixed. If the mold remediation in the example above is denied, that cost comes to you directly, on top of any deductible already applied to the covered portion. Reading the exclusions section and asking how resulting damage is handled, before a loss happens, is the only way to know in advance how a mixed-cause claim like this would likely be split.
What if the damage doesn't fit one clean category
Some claims involve more than one cause, and insurers end up making two separate calls instead of one. A pipe freezes and bursts while a family is away for two weeks. The water damage from the burst is one issue. The mold that grew while nobody was home to catch it is another. The policy may cover the first and exclude the second, even though both came from the same event.
A fair question to put in writing is what percentage of the loss is tied to the covered cause and what percentage is tied to the excluded one. The adjuster's report should show that split, and it often doesn't unless you ask for it directly. Insurers sometimes pay to replace the pipe and the flooring directly under it, then deny the mold remediation as a separate, maintenance-related problem. Whether that holds up depends on how quickly the damage was found and reported, and whether your policy treats mold as a resulting loss from a covered peril or as its own exclusion regardless of cause.
Freezing pipes bring in another layer, since most policies only cover burst-pipe damage if you kept the house heated or shut off and drained the water system while it was vacant. If neither happened, the insurer may deny the whole claim as a maintenance failure instead of splitting it. That is a different argument than a mixed-cause dispute, and it helps to know which one you are actually having before you push back.
If you disagree with how a claim has been divided, you can ask the adjuster to explain the reasoning in writing and bring in your own contractor for a second estimate that draws the line differently. An appraisal clause, where each side brings in an independent estimator, can resolve a disagreement over the dollar amount of a covered loss. It won't settle a dispute over whether something is covered at all. Either way, a denied portion of the claim still comes out of your pocket on top of any deductible already applied, so it helps to read how your policy defines resulting damage before you are in the middle of one.
Before you respond to the offer
Find the exclusions section on your own policy and read how it defines resulting damage. That wording, not the adjuster's summary, is what any appeal or reinspection request should point back to.
