Small leaks, long time, large repair

A burst pipe announces itself. An appliance leak does not, and that is why it frequently costs more. A supply hose weeping behind a washing machine, a dishwasher seeping at the door gasket, or a tank heater rusting through at the bottom can run for weeks into a cabinet base or a wall cavity before anything shows on a finished surface.

How a tank water heater actually fails

A conventional tank is a steel vessel with a glass lining and a sacrificial anode rod inside it. The anode corrodes on purpose so the steel does not, and when it is used up the steel starts to go. Corrosion works from the inside out at the bottom of the tank, where sediment collects and holds water against the metal, so the first sign is usually a small amount of water on the floor under the unit with no visible source, or a rust-stained drip at the drain valve.

The failure that follows is not a drip. When the shell finally opens, the tank empties, and the cold supply keeps feeding it until someone closes a valve. If the heater sits in a closet, a garage or a utility room without a pan and a drain, that volume goes straight into the floor assembly. In a slab house it runs to the low point and under the cabinets. In a house on a crawl space it goes through the subfloor and lands underneath. On an upper floor it goes into the ceiling below and follows the joists.

Two inexpensive things change the outcome. A drain pan under the heater, piped to somewhere the water can be seen or discharged, converts a flood into a puddle. A shutoff valve on the cold inlet that actually turns, tested once a year, means the tank stops feeding the moment it is discovered rather than whenever someone finds the main.

1. You callOne number per county. The dispatcher takes the address, the ZIP and a short description of what happened.
2. A local crew calls backAn independent restoration contractor already working that county rings you directly and sets a time.
3. They look, then scope itNothing is priced from a phone call. The crew walks the building, takes readings, and writes a scope you can hand to your adjuster.

The other five that leak

Most appliance losses come from a short list, and each has a characteristic failure and a characteristic hiding place.

• Washing machine supply hoses: rubber ones fail at the crimp and can let go entirely; braided stainless hoses fail at the fitting. Both sit behind a machine nobody moves, against a wall cavity.
• Icemaker lines: small-diameter tubing run through a wall or under a floor to a refrigerator, often with a saddle valve on the original installation, weeping a few ounces a day into the cabinet wall behind the unit.
• Dishwasher door gaskets and drain connections: water runs down the front of the cabinet base and into the toe kick void, where it swells particleboard from the bottom edge up.
• Toilet supply lines and wax rings: a failed ring leaks only when the fixture is used, so the subfloor around the flange rots slowly and the first symptom is a floor that feels soft or a toilet that rocks.
• Refrigerator and freezer defrost drains: they clog and overflow onto the floor beneath a heavy appliance that never gets pulled out.
• Reverse osmosis and filter housings under a sink: a cracked housing or a loose fitting drains into the cabinet, and the cabinet bottom hides it until the finish lifts.

Why the damage outruns the volume

The total water from a slow leak is often a fraction of what a burst pipe releases, and the repair is frequently larger. Time is the reason. A clean-water loss found the same day is dried and the material is kept. The same water present for six weeks has kept cellulose material continuously above the moisture level that supports growth, has swollen and delaminated any particleboard it touched, and has soaked into framing that will take considerably longer to dry than a fresh wetting would.

Slow leaks also spread along paths nobody inspects. Water under a cabinet run travels the whole length of the run through the open toe kick. Water at a wall cavity wicks up the wallboard and down into the bottom plate. Water on a subfloor under sheet vinyl has nowhere to evaporate and simply stays, until the seams lift or the floor gives underfoot.

Local water, local pressure, local buildings

What comes through the meter has some bearing on how supply components age. Mountain Home draws raw water from Norfork Lake through an intake about a quarter mile from its treatment plant, running around pH 7.9 and 3.12 NTU turbidity. Marion pumps four wells in the Wilcox Group Aquifer and buys additional treated water from West Memphis Utility, disinfecting with chlorine averaging 1.47 parts per million. West Memphis has supplied its own water from groundwater wells since 1940. These are ordinary treated supplies, and the point is not that any of them is hard on plumbing; it is that mineral content and disinfectant load are what work on a rubber gasket and an anode rod over a decade, and they differ across the footprint.

Pressure and system age matter more. Van Buren Municipal Utilities has provided water and sewer to the city since 1893, and the age of any distribution system shows up as pressure variation at the house. Mountain Home has approved $20 million in bonds for a redundant Lake Norfork intake and pump station specifically because the only pump station serving its 1080 pressure zone was built in 1969 and is a single point of failure. Pressure swings are exactly what finds a weak supply hose.

Then there is who is home. Baxter County's roughly 23,105 housing units include a substantial share of second homes and seasonal housing around Bull Shoals and Norfork lakes. A supply hose that lets go in an occupied house is a wet floor. The same hose in a house that is checked once a month is a different job entirely, and it is one of the few restoration problems that a hardware-store part and a closed valve genuinely prevent.

What gets dried and what gets replaced

Clean supply water caught quickly is the most forgiving loss there is. Wallboard, framing and most flooring can be dried in place if the cavity is opened and the readings come down. The cabinet is the usual exception: a particleboard base that has been sitting in water swells and delaminates, and no amount of drying restores its thickness or its holding power for a screw.

The judgment call is almost always about how long it ran. Material wet for hours dries. Material wet for weeks has usually changed, and the honest answer is to open the assembly, look at the framing and the subfloor, and decide from what is there rather than from the appliance that caused it.

Before you call

The rest is decided at the address, by someone standing in the room.