Preventing Water Damage at Your Business
Water is the most common commercial property claim and the most preventable. Five sources cause nearly all of it, and four of the five are fixed with maintenance and a shutoff valve.
- Plumbing failures, appliance and HVAC leaks, roof leaks, sewer backup and frozen pipes cause most commercial water losses.
- Sewer and drain backup is excluded from standard property policies and needs a specific endorsement.
- Flood is never covered by commercial property — it requires NFIP or private flood coverage, with a waiting period.
- Losses from lack of maintenance or unheated premises are commonly excluded, so the maintenance record is part of the claim.
- Water sensors and automatic shutoff valves are the cheapest meaningful loss control available and some carriers credit them.
Where the water actually comes from
Supply line and plumbing failures. Braided washing machine hoses, water heater tanks, toilet supply lines, fittings above ceilings. These fail without warning and run for hours if nobody is there.
HVAC and appliance leaks. Condensate pans and lines, ice machines, dishwashers, water heaters. Slow leaks that cause mold damage before anyone notices are the expensive version.
Roof leaks, especially at flashing, penetrations and drains. Blocked roof drains on a flat roof cause ponding, which causes structural and interior damage.
Sewer and drain backup, which is both a water loss and a contamination loss.
Frozen pipes in unheated or seasonally closed spaces — one cold night in an unheated building is a total-loss-scale claim.
The controls that pay for themselves
Know and label your main shutoff, and make sure every staff member on every shift knows where it is. Time to shutoff is the single largest determinant of loss size.
Install water leak sensors near water heaters, under sinks, at HVAC units and in server rooms, and an automatic shutoff valve on the main if the building will accept it. This is a few hundred dollars against a five-figure loss and some carriers credit it.
Replace rubber appliance hoses with braided stainless on a schedule. Replace water heaters at end of life rather than at failure.
Clear roof drains and gutters seasonally, and inspect flashing twice a year.
Maintain heat above freezing in any occupied or seasonally closed space, and drain systems in genuinely unheated buildings.
Service HVAC condensate lines annually. Store nothing valuable directly on the floor in areas below plumbing.
What property insurance covers — and does not
Covered: sudden and accidental discharge from plumbing, appliances and HVAC, and resulting damage to building and contents. Damage from a covered roof loss such as wind-driven rain after storm damage.
Excluded or restricted: sewer and drain backup, which needs an endorsement. Flood and surface water, always. Continuous or repeated seepage over a period — the slow leak. Damage from lack of maintenance or wear. Frozen pipes where heat was not maintained or systems not drained. And mold, which is typically limited to a small sublimit even when the water loss itself is covered.
The mold sublimit deserves attention. A covered water loss discovered late produces a large mold remediation cost against a $10,000 or $25,000 sublimit. Speed of discovery is a financial variable, which is the argument for sensors.
Business interruption is the other half
A water loss closes the space. Property coverage repairs it; business interruption replaces the income while it is closed, and extra expense pays for the temporary location that shortens the closure.
Set the business interruption limit against a realistic recovery period — for a restaurant or a clinic, six to eighteen months rather than three — and check the waiting period. A 72-hour waiting period on a five-day closure pays almost nothing.
When it happens
Stop the water, then document before you clean. Photograph and video everything, including standing water and damaged contents, before mitigation begins.
Call your carrier immediately and mitigate promptly — you have a duty to prevent further damage, and delaying mitigation can reduce recovery. Most carriers have preferred restoration vendors who bill them directly.
Keep every invoice and every hour of staff time spent on mitigation. And produce the maintenance records: on a water claim, the difference between a paid claim and a wear-and-tear denial is usually a service history.