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Infrared Cameras in Water Damage Inspection: How It Works

Last updated October 25, 2026

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The short answer

What Infrared Cameras Detect

Infrared cameras, also called thermal imaging cameras, read the heat signature of surfaces. When water is present, it evaporates and cools the surrounding material, creating a temperature difference. The camera displays these differences as color variations, with cooler areas often indicating moisture.

This technology works through drywall, wood, and some other building materials. It can show water that has wicked up from a leak or spread along a joist. The pros use this information to map the affected area and determine how far the water has traveled.

  • Find hidden water behind drywall and paneling
  • Trace the path of a roof leak across the ceiling
  • Detect moisture in insulation or wall cavities
  • Locate cold spots from air leaks that cause condensation
  • Check for water intrusion around windows and doors
  • Assess the extent of damage before demolition

How the Pros Use the Camera

During a water damage inspection, the pros scan the entire affected area with the infrared camera. They look for temperature anomalies that suggest moisture. They may also use a moisture meter to verify each suspicious spot, ensuring the thermal image is accurate.

The pros can then create a map of the water damage, showing its boundaries and likely source. This helps you understand the scope of the problem. It also helps the repair process, because the pros can plan the most efficient way to dry and restore the area.

In a humid subtropical climate with hot summers and spring hail and thunderstorms, roof leaks and flash floods can cause hidden damage. An infrared inspection can be especially helpful after a storm, when water may have entered through shingles or flashing. If you live in an area prone to heavy rain, consider scheduling an inspection after a storm.

Limitations of Infrared Imaging

Infrared cameras have limits. They cannot see through thick concrete or metal. They also work well when there is a temperature difference between the wet and dry areas, which is not always the case in very hot or very cold weather.

Also, the camera shows surface temperature, not the moisture content. A cold spot could be caused by an uninsulated pipe or a draft. That's why the pros confirm with a moisture meter before recommending any repairs.

If the water has been present for a long time, the surrounding materials may have reached equilibrium, meaning the temperature difference is small. In that case, the camera might miss the damage. The pros may then need to use other methods, such as probing with a moisture meter or opening a small inspection hole.

What to Expect During an Inspection

When you request a water damage inspection, the pros will walk through your home with the infrared camera and a moisture meter. They'll check the areas where you suspect a leak, as well as common trouble spots like around pipes, windows, and roof penetrations.

The inspection is non-invasive, meaning the pros usually don't need to cut into walls or ceilings. They can scan surfaces and identify problem areas without causing extra damage. After the scan, they'll explain what they found and discuss your options for repair.

You should be present during the inspection to point out any stains or musty smells you've noticed. The pros can also check your attic and crawlspace if you have them. Be prepared to give them access to all areas of your home, including closets and utility rooms.

After the Inspection: Next Steps

Once the infrared inspection is complete, the pros will summarize their findings. They'll mark the areas that show moisture and recommend a course of action. This might include drying the area, removing damaged drywall, or fixing the source of the leak.

If the leak is from a roof or plumbing, you may need to contact a roofer or plumber to make the actual repair. The pros can handle the water damage restoration, including drying, cleaning, and rebuilding. They can also help with stain removal and mold prevention.

Your insurance company may cover some or all of the restoration costs. Check your policy to see if water damage from a sudden leak or storm is included. Policies vary, and your insurer decides what is covered.

  • Dry the area with fans and dehumidifiers
  • Remove and replace soaked drywall or insulation
  • Repair the source of the leak, such as a roof or pipe
  • Clean and disinfect to prevent mold growth
  • Monitor the area for any new signs of moisture

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Frequently asked questions

Can an infrared camera see water through drywall?

Yes, an infrared camera can detect the temperature difference caused by moisture behind drywall. It won't show the water itself, but it will show a cooler area that suggests wet material. The pros use a moisture meter to confirm the reading before making any recommendations.

Is an infrared inspection worth the cost?

The cost of an infrared inspection depends on the size of your home and the extent of the suspected damage. It can save money by pinpointing the exact location of a leak, reducing unnecessary demolition. However, it's not always necessary if you can already see the source of the water.

Can I buy an infrared camera for home use?

You can buy a consumer-grade infrared camera, but they are less sensitive than professional equipment. A basic model may not detect subtle moisture differences. For a thorough inspection, it's often better to have the pros use their high-resolution cameras and moisture meters.

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