Water Heater Leak in Massachusetts

In a lot of older Massachusetts houses the water heater sits in the basement next to the boiler, the washer and years of stored belongings, and in many homes it shares a wall with a finished family room or a basement bedroom. When a tank fails, water spreads across the slab, runs under the bottom plates of framed walls and soaks into carpet pad on the far side, where nobody sees it. Basements in Massachusetts stay cool for much of the year, and a slab that soaks up water in January dries slowly. In apartment buildings and triple-deckers, a heater in a closet on an upper floor can send water through the ceiling of the unit below.

At one hour, most of the water is on hard surfaces near the heater, and extraction can stop it before it reaches finished rooms. By 24 hours it has wicked several inches up drywall, soaked through cardboard boxes and spread under carpet. At 48 hours mold can start on damp drywall and pad, and stored items begin to smell. After a week, wood framing, trim and subfloor can swell or stain, and much more drywall, pad and stored material has to be removed.

Water from a water heater starts out as clean water, so a lot can be dried in place when the crew starts quickly. A concrete basement slab, painted block or poured walls and bare wood framing all dry well with dehumidifiers and air movers. Carpet that was soaked for only a short time can often be extracted and dried in place, sometimes lifted at one edge so air can move underneath. Drywall that is damp but still firm can be dried with air directed along the wall, and small holes may be drilled near the bottom to vent the cavity. Solid wood furniture and plastic storage bins can be wiped down and kept.

Some materials usually have to go. Carpet pad soaks up water like a sponge and is often removed, especially if the water sat overnight. Drywall that has gone soft or wicked water more than a few inches up is cut out above the wet line, along with wet insulation behind it. Particleboard shelving, laminate furniture and cardboard boxes swell or fall apart and are thrown out. If the leak went unnoticed for days or weeks, the water is no longer treated as clean, and more porous material is removed for that reason.

Water heater leaks show up across Massachusetts, but older housing raises the odds. In Greater Boston, Somerville has a median home built in 1938, and more than half of its homes are older than 1940, so many basements hold aging heaters and connections. In Central Massachusetts, Worcester homes have a median build year of 1951 and include many triple-deckers, where a leak in one flat can reach the flats below. On the SouthCoast, New Bedford has a median home built in 1938, and its mill-era houses often keep the heater in a crowded basement beside stored belongings.

The same help reaches MetroWest and the South Shore. Framingham has many 1950s to 1980s homes with finished basements built around a small utility room, and Brockton homes, most of them owner-occupied, often have heaters near finished space too. On Cape Cod, a third of housing units sit empty for part of the year, so a heater leak can run unnoticed. When you call, say where the heater is and which rooms got wet, and you are connected with a local crew that can usually come out the same day.