What do I do the moment I find a burst pipe?
Shut the main, then the power to the wet area if you can reach the panel from a dry position. Open a low tap to drain the pressure out of the system, move what you can lift, and call. Crews go out as soon as one is free and the line is answered at any hour.
Photograph everything before it moves: the broken pipe if you can see it, the water on the floor, the stains on walls and ceilings, and the rooms affected. If the pipe is still frozen, resist the urge to thaw it with an open flame, and do not run water to test whether it is clear until somebody is watching the line. If the frozen or broken section appears to be outside the building, the Department of Public Works has told residents to contact Water Operations about it.
Why does the damage show up during the thaw?
Because ice is also a plug. While a line is frozen the split is sealed by the ice itself, so nothing escapes. As the pipe warms the plug melts, pressure returns, and water pours from the break at mains pressure until somebody closes a valve.
That is why the worst discoveries happen on the first mild morning after a cold spell, and why a building nobody has been into for a few days can take the most water. In Worcester the thaw is a double event: burst pipes show themselves once the water runs again, and snowmelt reaches cellars at the same time, so a house can be taking water from inside and outside at once.
Which pipes freeze first in an older Worcester house?
The ones with no heat around them: lines in an unheated porch or entry, pipes against an outside cellar wall, a hose bib that was not drained in the autumn, and risers inside an exterior wall. Vacant rooms and empty apartments are where splits go longest without being found.
Much of the city housing is pre-war three-deckers and mill-village houses, built in wood up to about the mid-1920s, and the plumbing in them has been altered more than once. Pipes end up in cavities nobody would choose today, and in balloon-framed walls those cavities run between floors, so cold air moves through them freely. Late autumn is the time to deal with it: drain and disconnect the outside hose bibs, look at the unheated porch and the cellar perimeter, and keep some heat in rooms you are not using.
What moves the cost of burst pipe damage?
How long the water ran, how far it travelled, how many floors and units it reached, how much plaster and plank floor is wet, whether assemblies have to be opened, and how long the drying takes. The price is explained and approved before work starts, and reconstruction is quoted separately.
Duration dominates. A split found within the hour on a cellar floor is a modest job; the same split running for a day through two apartments wets ceilings, plaster walls, floor structure and contents on three levels. Old materials add days rather than square feet, because plaster and lath and a plank subfloor hold water and give it up slowly, and sound plaster is usually dried in place rather than cut out.
Is burst pipe damage covered by insurance?
Often, but it depends on the policy and the insurer. Standard policies generally respond to sudden water damage of this kind and generally exclude gradual leakage and seepage. Freeze claims in particular tend to turn on whether the building was heated and occupied, according to the Massachusetts Division of Insurance.
That is the sentence to remember if a property is empty over the winter, or if a unit in a multi-family building is between tenants: what you did about heat is likely to be asked about. Keep the record from the start, including photographs, the moisture log, a list of what was removed and whatever the plumber provides about the failed line. The Division of Insurance Consumer Service Unit at mass.gov takes complaints about how a claim was handled, expects you to go to the insurer first, and cannot decide facts such as the cause of the loss.
