How to Unfreeze Frozen Pipes
This weekend temperatures plunged far below zero in Maine, New Hampshire and Vermont as residents hunkered down and tried to stay warm. Mount Washington set a record for coldest wind chill ever recorded at minus 108 degrees! As a landlord, my phone was non-stop yesterday. Unfortunately, these record low temps resulted in some frozen pipes at my apartments buildings.
The best way to deal with freezing pipes is to prevent them in the first place. But if the unthinkable
does happen, you’ll have to act fast to minimize the damage and cost of repairs.
Not all freezing pipes burst. But when one does, it’s because water expands when it freezes, adding considerable pressure on unyielding plumbing pipes. That pressure can cause a tiny leak at a joint or crack on a length of pipe, unleashing the full flow of water inside your home.
How to Identify Freezing Pipes
A water line coated in frost (or bulging like a well-fed python) is a good sign that it’s frozen, but not all plumbing pipes are visible. If the water in your faucets doesn’t flow and your toilet doesn’t refill following a flush, that’s a good sign your pipes are frozen.
How to Thaw a Frozen Pipe
Before doing anything, shut off the water supply to that section of plumbing (or the entire house if that’s the only option) because the real trouble begins after the thaw. That’s because the frozen water may be acting as a plug, preventing water from spilling out of the cracks in your pipes. When that plug is thawed, water gushes out. It’s a good idea to be ready with a mop, bucket, and towels in case there’s a plumbing leak.
It’s not the frozen pipes that makes a mess... it’s the thawing pipes that leak and spew water after a hard freeze.
Use a space heater, heat lamp, or hair dryer to thaw the frozen length of pipe. Wrapping freezing pipes with thermostatically controlled heat tape is also an effective way to quickly thaw a trouble spot.
Don’t thaw pipes using a propane torch, which presents a fire risk.
What to Do If a Pipe Bursts
If you walk in to discover Old Faithful in your basement, the first thing you should do is shut off the main water supply to minimize flooding. Next, call your plumber.
Immediately dry out by removing as much water as possible using mops, sponges, towels, and a wet/dry vacuum. To minimize mold, mildew, and other moisture-related problems, run a dehumidifier in the space until it’s very dry.
For big messes, call your insurance agent. The good news is that most homeowners insurance covers burst pipes and the resulting water damage.
A Few Words About That Main Water Shut-Off Valve
Everybody should know where the main water shut-off is. The sooner you can shut off the water, the less it will cost you down the road.
Not only should homeowners know where the valve is located, they should have it inspected the next time a plumber is on site. If your home has an older gate-style valve, it might be worth the money to have it replaced with a more reliable ball valve.
Gate valves are prone to sticking when you need them the most, so it’s a good idea to exercise them once a year by rotating them back and forth.
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