How To Test For Mold In Walls

How to Test for Mold in Walls

If you suspect that there is mold growing in your home, it is important to test for mold in your walls. Mold can cause serious health problems, and it can also damage your home. In this article, we will discuss how to test for mold in walls.

Signs of Mold in Walls

Before you start testing for mold in your walls, you need to know the signs of mold growth. Some of the signs of mold in walls include:

  • Discoloration or water stains on the walls
  • Musty odor in your home
  • Warping or buckling of the walls
  • Peeling or bubbling paint or wallpaper

Tools Needed to Test for Mold in Walls

Now that you know the signs of mold in walls, it’s time to gather the necessary tools to test for mold. Here are the tools you will need:

  • Mold test kit
  • Protective gear (gloves, goggles, and mask)
  • Flashlight
  • Utility knife
  • Plastic bags

How to Test for Mold in Walls

Here are the steps to test for mold in walls:

  1. Put on your protective gear.
  2. Use a flashlight to inspect the walls for any signs of mold.
  3. If you see any mold growth, use a utility knife to cut a small section of the wall (about 1 inch by 1 inch).
  4. Place the sample in a plastic bag.
  5. Repeat steps 3 and 4 in different areas of the wall.
  6. Follow the instructions on the mold test kit to collect samples from the wall.
  7. Place the samples in the designated containers provided by the kit.
  8. Send the samples to a laboratory for testing.


Q: How long does it take to get mold test results?

A: It usually takes about a week to get mold test results.

Q: How much does it cost to test for mold in walls?

A: The cost of testing for mold in walls varies depending on the size of the area being tested and the type of test being done. It can range from $50 to $500.

Q: Can I test for mold myself?

A: Yes, you can test for mold yourself using a mold test kit. However, it is recommended that you hire a professional if you suspect that there is a large amount of mold in your home.


Testing for mold in walls is an important step in keeping your home and your family safe from the harmful effects of mold. By following the steps outlined in this article, you can test for mold in your walls and take the necessary steps to get rid of it.