Frozen copper pipe cracked and water coming out of the hole

How to Thaw Frozen Pipes

Frozen pipes can be a real issue during the winter months. Pipes that run outdoors or along the home’s outer walls are the most vulnerable to freezing temperatures. Unfortunately, simply keeping the interior of your home warm isn’t enough protection for pipes that run close to exterior walls.

Water pipes running from the main water line into the home are pressurized to ensure adequate water pressure to shower, flush the toilet, and perform many other everyday tasks. This also means there is a lot of pressure behind the water if the pipes freeze and burst. A lot of water can enter your crawlspace or between the walls very quickly if your pipes happen to freeze and burst. Let’s examine how to thaw frozen pipes in the wall without tearing the wall apart to access them and the types of tools you’ll need.

Prepare to Thaw the Pipes

The water from your faucet won’t run if the water is frozen in the pipes. Turn the water off at the supply line if you suspect it is frozen. Turn the affected faucets on so the pressure can escape as the ice thaws. Follow the pipes from the inactive faucet until you find the frozen area. You should be able to identify the frozen area by the frost or ice. Some frozen areas may simply appear as small bulges in the pipes instead of showing signs of frost or ice.

frozen pipes

Burst pipes will be much easier to find because they will likely be dripping with water, especially if you’ve already turned the water off at the supply line. If the pipe burst happened several hours ago and has been slowly leaking, you may see small frozen rivulets or icicles. A more recent burst may still spray water; there’s pressure in the line.

Frozen Pipes in the Wall or Ceiling

Frozen pipes in the wall or ceiling present unique challenges. You obviously don’t want to tear out the wall or ceiling to expose the frozen pipe and thaw them. Here are a few ways to thaw pipes in the wall or ceiling as long as they haven’t already burst:

  • Turn the thermostat up and wait. This can be quite the waiting game because the cold is still radiating through the outer layer of the wall to keep the pipes cold, but your heat pump or furnace is working hard to warm the walls and, therefore, warm the pipes within them.
  • Use an infrared lamp to heat the wall section where the frozen pipe is located. Heat lamps are a second choice, but infrared lamps are more efficient because theyn’tn’t heat the air. Infrared lamps direct their energy toward warming the wall and frozen pipe instead of warming the air that touches the wall.
  • You may have to tear out a section of wall or ceiling to reach a frozen pipe. This should be considered a last resort and a way to prevent the pipe from bursting and destroying the wall or ceiling anyway.

Pipes at Risk for Freeze

The Pipes along an exterior wall will most likely freeze during freezing weather. Pipes protected by insulation between the floors of your multi-story home or otherwise well-insulated are at a much lower risk of freezing during winter. Here is a small list of pipes that are more susceptible to freeze:

  • Pipes that are in an outside wall.
  • Pipes that are under the sink on an outside wall.
  • Pipes that are in an unheated crawlspace or utility room.

How to Avoid Frozen Pipes

The best way to avoid having to thaw frozen pipes in the wall is to keep them from freezing. Moving water doesn’t freeze as quickly as water that is still inside the pipes. Leave your faucets on just enough to create movement in the pipes so the water has less chance of freezing. Here are a few more ways to avoid frozen pipes this winter.

  • Leave the water slowly trickling from all faucets in the house. The water doesn’t do much to your water bill, and the pipes shouldn’t freeze because the water is constantly moving.
  • Open base cabinets under the sink in the kitchen and bathrooms. This allows warm air to circulate under the sink, keeping the pipes warmer than average.
  • Electric pipe heat tape is an excellent choice to prevent frozen pipes. This ribbon-style wrap with built-in heating elements wraps around the pipes to keep them above freezing.
  • Wrap unprotected pipe with insulation wrap designed to hug the pipes and prevent freeze.
  • A small portable heater placed under the sink, in the crawlspace, or in other areas prone to freezing will help keep the pipes from freezing.
  • A heat lamp, such as an infrared or incandescent light, can be mounted or hung in areas where the pipes may freeze. The lamp can be turned on and off as needed to prevent freezing.
  • Turn the heat up in your home during cold snaps. Homeowners generally avoid turning the heat up during a cold snap to avoid costly utility bills. A warmer home will help keep the pipes within the walls from freezing.

Tools for Thawing Frozen Pipes in a Wall

We mentioned several tools and supplies to prevent or thaw frozen pipes in the wall. We have everything you need to address frozen pipes and ensure that thdon’tn’t become frozen again.

frozen pipes

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