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Why You Should Never Use Bleach On Mold.

Usually, when most homeowners notice mold, they get out the bottle of bleach thinking a few sprays will solve the problem.

Image result for don't use bleach on mold

It’s no wonder.

One of the most popular blogs, The Huffington Post, continues to perpetuate the myth that spraying bleach will take care of your mold problem. Even information on The Center For Disease Control (CDC) website still suggests using bleach to kill mold.

The truth is, using chlorine bleach to kill mold is probably one of the worst things you can do. On porous surfaces like drywall or hardwood floors, it won’t work to kill mold or keep it from coming back. Why? Because mold spreads its roots (called mycelia and hyphae) deep into porous surfaces.Image result for mold on wall

Simply spraying a bleach solution on the surface won’t kill mold spores at their roots. It will actually feed their roots.

  • Bleach encourages toxic mold growth on porous surfaces because it provides excess moisture. Bleach contains about 90% water. When you apply bleach to a surface, the chlorine quickly evaporates leaving behind a lot of water. Then, when the water soaks into porous surfaces like wood, it encourages mold growth. So, bleach can actually make your mold problem worse. Bleach only removes the color from mold. After you spray bleach, only the surface appears clean. But the problem is, the mold’s roots, or hyphae, continue to grow.
  • Chlorine bleach is extremely harmful to surfaces. For example, when you use bleach is on wood, it starts to weaken it by breaking the fibers. When you spray bleach on metal, it starts to corrode it almost immediately. Thus, using bleach to kill mold creates problems with the structural integrity of a home.
  • Bleach is extremely corrosive. When you spray bleach and it evaporates, it releases chlorine gas. It irritates and eventually causes damage to the skin, lungs, and eyes.
  • The corrosive nature of bleach is even worse when it’s mixed. Bleach should never be mixed with acids, because it causes dangerous fumes.Remember: Mixing cleaning compounds containing ammonia with bleach and ammonia produces deadly gasses that can kill with just a few breaths.

 

 

Kristine Allcroft, PhD. “9 Reasons You DON’T Want to Use Bleach to Kill Mold” Web Blog post. PuroClean, 3 Sep. 2016

Images provided by Google.

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