Emergency Frozen Pipe Water Damage in Selden, NY

When a frozen pipe becomes an emergency

A pipe that is only frozen is a plumbing problem. A pipe that has split is a flood waiting for the temperature to rise. If you hear dripping, see a bulge in the pipe, or notice frost on a line that is also leaking, shut the main valve right now and call.

Thawing can start the water without warning. A split the length of your thumbnail can release gallons a minute once the ice plug gives way, so leave the faucet open and watch the area.

Why ice splits metal and plastic

Water expands about 9 percent as it freezes. That alone does not usually crack a pipe. The real damage comes from trapped pressure: ice blocks the line, the water between the ice plug and the closed faucet has nowhere to go, and the pipe wall gives way a few inches or feet from the ice itself.

That is why the split is often in a spot that looks fine when you inspect it. Once the plug melts, the pipe starts delivering water into whatever surrounds it. A different cause of failure, with a similar flood, is described on our burst pipe page.

Where pipes freeze first

Thawing a pipe without making things worse

1. Open the faucet served by the frozen line so melting water can escape.
2. Apply gentle heat with a hair dryer or a heating pad, starting near the faucet and moving back toward the ice.
3. Never use a torch, propane heater or open flame on a pipe.
4. If you cannot reach the frozen section or it is behind a wall, stop and call a licensed plumber.
5. Once water flows, check along the pipe for wet spots and drips.

Empty houses and winter absences

Long Island gets nor'easters, and a cold snap that follows a power outage can drop a house below freezing. In Middle Island, 30.1 percent of households are single-person according to the 2020 Census, so a pipe may split while the only occupant is away. If you leave for a week, ask a neighbor to check the house, and see our page for Middle Island water damage if you live there.

What we do after the thaw

Crews pump out standing water, then use moisture meters and a thermal imaging camera to find water inside the wall cavity. A pipe that split in a wall can wet the cavity from the split down to the floor plate, even when only a small stain shows. Drying follows with air movers and LGR dehumidifiers, as laid out on our structural drying page.

Because supply water is clean at the start, wall materials often dry in place when we reach them quickly. Insulation and padding rarely do. Details on opening and repairing the wall are on our drywall repair page.

Decision guide for a frozen line

What drives the price

• Water category, which is clean at first and worse the longer it stays.
• How far the water traveled inside walls and floors.
• The materials it reached, such as plaster, hardwood or carpet.
• Days of drying equipment needed.
• Rebuild work once the structure is dry.

Call us and the scope and price are laid out before any work begins.

Insurance notes

A split from freezing is often treated as a sudden loss, but policies may have conditions, such as heat being maintained in the house. Ask your insurer how your policy applies, and keep photos and records of any repair. We document moisture readings and a written scope to support your claim.

Stay safe while you wait

• Close the main valve if any pipe is leaking.
• Keep the heat on and open cabinet doors under sinks.
• Stay away from outlets and cords where water is spreading.
• Switch off power to wet rooms only when the panel is dry and safe to reach, and phone 911 or the utility before anything else for gas or electrical danger.
• Do not stand under a sagging ceiling.