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Frozen sewer pipe repair on Long Island
In a hard freeze, the sewer line leaving a home or business can ice up and stop drains cold. JET locates the frozen section, thaws it with controlled methods and repairs pipe the cold has damaged. Available 24/7.
Signs your sewer line has frozen
Frozen sewer lines show up during or just after stretches of very cold weather, often where pipe is exposed or shallow.
Drains stop in cold snap
Fixtures that drained fine until the temperature dropped, then slowed or stopped, point to ice in the line.
Toilet won't drain
A toilet that fills and holds water after a cold night may be backed up behind a frozen section downstream.
Line runs through cold space
Pipe in an unheated crawl space, garage or along an outside wall is the most likely to freeze.
Same spot every winter
A line that freezes in the same place year after year often has a low spot, poor slope or too little cover over it.
Thawing and repairing frozen sewer lines
Thawing has to be done carefully. Ice expands, and pipe that has been frozen may already be cracked or separated.
Why sewer lines freeze
Waste lines usually carry water in short bursts, so a little standing water in a sag or a slow trickle from a fixture can freeze between uses. The risk is highest where pipe runs through unheated space, sits shallow under the yard, or has a low spot that holds water.
A frozen sewer line can also hide another problem. A partial clog or a belly in the pipe holds more water, which gives the cold more to work with.
What to do while you wait
- Stop sending water down the drains. With the line frozen, it has nowhere to go and will back up into the lowest fixture.
- Keep the building heated, and open cabinet doors on outside walls so warm air reaches the pipes.
- Never use a torch or any open flame on a pipe. It is a fire hazard and can damage the pipe.
- Don’t pour boiling water or chemical drain cleaners into the drain. Boiling water can soften or crack plastic pipe and fittings, and chemicals sit in the line once it backs up.
- Call (631) 260-3640 if the line stays stopped, or if you can’t find or reach the frozen section.
How JET thaws a frozen line
The technician first works out where the freeze is, using the layout of the line, what is backing up and, when helpful, a camera inspection. Then the frozen section is thawed with controlled methods suited to the pipe material, so flow returns without adding stress to the pipe.
Once water is moving, the line is run and checked to confirm it drains properly.
When frozen pipe needs repair
Ice in a pipe can crack it, push joints apart or break a fitting. After thawing, the line is checked for leaks and damage. Cracked or separated sections can be repaired, and pipe that has collapsed or is badly damaged may need to be replaced.
If cleaning or damage repair turns out to be the bigger job, see blocked sewer line repair.
Lowering the chance it happens again
If a line freezes repeatedly, there is usually a reason, such as exposed pipe in a cold space, a low spot that holds water, or shallow pipe under the yard. Once the line is open, JET can point out the likely cause and the options for that section, from insulating exposed pipe to correcting a sag.
Keeping heat at a steady temperature during cold snaps, day and night, also helps pipes in heated parts of the building.
Need help right now?
Backups, odors, wet spots, clogged drains, and main line problems should not wait. JET responds 24/7 across Long Island.
Call 24/7: (631) 260-3640Related sewer services
Other help for winter sewer and drain problems.
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Read reviews on Google"We needed our cesspool emptied asap due to an overfill and Jack got here within the hour and did an awesome job and was very professional."
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Frozen sewer pipe FAQs
Don't see your question? Call (631) 260-3640.
Can a sewer line really freeze on Long Island?
Yes, during extended cold. It is most likely where pipe runs through unheated space, sits close to the surface, or holds water in a low spot.
Can I thaw a frozen sewer pipe myself?
If you can safely reach an exposed section indoors, gentle warmth such as warm towels or a hair dryer can help. Never use a torch or open flame, and call a professional if the frozen area can't be found or reached.
Should I keep flushing to push the ice through?
No. More water just backs up behind the frozen section and can overflow at the lowest fixture.
Will the pipe be damaged after it thaws?
It may be. Ice can crack pipe or loosen joints, so the line is checked once flow returns and any damage is repaired.
Is frozen sewer pipe service available after hours?
Yes. JET provides 24/7 service, which matters in a cold snap when the line can't wait until morning.
Get a frozen sewer line thawed and checked
Drains stopped after a cold night? Call JET Cesspool Service at (631) 260-3640 for frozen sewer pipe repair on Long Island.
(631) 260-3640Request a free estimate
For a backup or overflow happening now, call (631) 260-3640 instead.