At what moisture level does mold grow in drywall

Mold is a common problem in homes and businesses, and it can be especially damaging to drywall. When drywall becomes severely moldy, it must be replaced to prevent further damage to the property and the health of its occupants. Here is what you need to know about replacing severely moldy drywall:

At What Moisture Level Does Mold Grow in Drywall?

Mold can grow on drywall at any moisture level, even as low as 30%. However, mold growth is most likely to occur when the moisture content of drywall is above 50%. High humidity, leaks, and flooding can all cause the moisture content of drywall to increase, creating an ideal environment for mold growth.

How to Remove Moldy Drywall

Removing moldy drywall is a serious task that should be performed by a qualified professional. The following steps outline the general process for removing moldy drywall:

• Locate the source of the moisture and eliminate it.
• Isolate the affected area to prevent the spread of mold spores.
• Remove all moldy drywall. Cut out a 12-inch perimeter around the visible mold to ensure all mold is removed.
• Dispose of the moldy drywall in a sealed plastic bag.

How to Replace Moldy Drywall

Once the moldy drywall has been removed, it needs to be replaced with new drywall. The following steps outline the general process for replacing moldy drywall:

• Install new drywall. Use mold-resistant drywall to prevent future mold growth.
• Tape and mud the joints. Use mold-resistant joint compound to seal the joints and prevent moisture from penetrating.
• Sand the drywall. Smooth the surface of the drywall before painting.
• Paint the drywall. Use a mold-resistant paint to further protect against mold growth.

Conclusion

Replacing severely moldy drywall is an important task that should be performed by a qualified professional. By following these steps, you can help prevent further damage to your property and the health of its occupants.