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Mold on walls – drywall or plaster

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While drywall is porous, plaster is not.

This means that mold will grow on the drywall, and often times on both sides since it is an organic porous material; in fact the rich carbon paper back that holds the gypsum together is the preferred food source for Stachybotrys to grow and decompose given enough moisture.

If you have visible mold on the exterior of the drywall, is almost certain a larger amount of mold growth is present in the back of the drywall.

There are no products that can guarantee the successful cleaning of mold on the drywall due to the porosity of the material. Often times, it must be cut off and removed.

Mold on plaster walls on the other hand are cleanable since it is not a food source, and not porous. The mold is usually feeding on your paint and dust. However plaster walls can contain paper backing and if moisture penetrates the back of the plaster, the walls will need to be removed.

You must always consult with a mold remediation specialist to ensure you can determine the extent of the contamination.

Call us for a free inspection at 416-791-8020.

 

 

Mold on Drywall

I found mold in the basement – what should I do?

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If you find mold that is less than 10 Sq. Ft, on your basement drywall, this can typically be remedied by yourself without having to call a remediation company. However, it is always best at minimum to consult with a mold specialist, because like the picture above shows, sometimes the small amount of mold visible on the exterior of the drywall is much larger on the inside of the drywall. Without experience and the proper equipment, you cannot make the right decisions on how to proceed.

Example: the amount of mold found in the above image located in the customers’ basement was the initial complaint.

As you can see, the amount of mold found in the basement was much larger (see image below). In fact in this case it extended to the perimeter of entire basement and the moisture was traveling for a long period of time eluding the owners. So always call a mould remediation company to ensure safety.

 

What not to do:

  • Attempt to clean the mold in the drywall by using bleach or vinegar; not only you are feeding the problem but mold will return stronger.
  • Paint over the mold, same reasons as above
  • Not doing anything will compound the problem and allow the mold in the drywall to multiply.