How Mold Can Grow Inside The Walls Of Your Home

Are your walls showing signs of discoloration? Perhaps you might be dealing with mold infestation in your walls.

When tackling wall mold, it’s important to check inside the walls as well. If you don’t eliminate the fungi that’s growing inside your walls, infestation is likely to spread. If you’re wondering how mold can grow in this area, here’s how.

How to Detect Mold In Walls

You should suspect mold inside your walls if:

  • Flooding or other considerable water damage has occurred in your home
  • There’s a musty smell in the room without any visible mold signs
  • There’s considerable mold outside your walls

The only way to know for sure whether mold exists inside your walls is to check. Cut 12 by 12 inch inspection holes using a drywall saw every four feet, eliminate any insulation, and use a flashlight and mirror to inspect inside the walls.

Alternatively, you could call a professional tester to inspect and test different areas of your home.

Mold in Wall Cavity

The presence of mold in wall cavities is a serious problem because the fungus isn’t immediately detectable to the naked eye. Therefore, it has time to spread across huge areas.

Occupants typically become aware when they experience an increase in adverse medical symptoms upon entering certain areas of the home.

If mold establishment occurs in a wall cavity, it won’t continue to grow provided the cavity is dry. It’s important the wall cavity remains extremely dry to prevent the fungi from spreading. The degree of contamination won’t decrease, but it won’t increase either.

Sources of Mold in Wall Cavity

Mold can occur in this area because of water condensation when external air contacts the cavity of the cooled internal surface.

This is especially problematic when you decorate rooms with impermeable wall coverings, for instance vinyl wallpaper. These coverings typically trap moisture between the gypsum board and finish.

The moisture from external air passes through the external building envelope and may condense on the wallpaper adhesive. Therefore, vapor barriers must be on a wall’s warm side and shouldn’t trap moisture.

Another source of mold in wall cavities is service leak. Service leaks, for instance dripping pipes may not always be obvious. Slow leaks are especially damaging because they increase humidity in the wall cavity considerably, causing immediate visible damage on the exterior.

Removing Mold in Walls

Before beginning this task, you must cover air vents, doorways, and other openings to different parts of your home with plastic.

If you are working in a huge room, you can use huge sheets of plastic to block off a smaller section in which you’ll be working. This will prevent mold spores from spreading to other areas of your home.

Remove moldy insulation and drywall. It’s important you dampen moldy materials before eliminating them to prevent mold spores from becoming airborne throughout the process.

You should also enclose moldy materials in heavy plastic bags before taking them out of the home to prevent spreading mold spores to other areas.

If there’s mold on the wall’s wooden studs, clean them using an antimicrobial cleanser. Allow them to dry totally before applying mold sealant to ensure any remaining mold traces can’t grow further.

Don’t try to sand wooden studs to eliminate mold; professionals should do this because it increases exposure to potentially dangerous mold spores that could result in serious illness.

If you require help eliminating wall mold, or if you think sanding the wooden studs might be necessary, consider scheduling a consultation with a mold professional.

If you suspect mold infestation inside your walls, it’s imperative you tackle the issue as soon as possible to prevent further damage.

If you need assistance with mold inspection, please contact us: 905-267-8556

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