How to Replace Drywall that has Black Mold
Mold growth can occur on drywall, especially in damp or humid areas such as the area for the water heater. Black mold generally cannot be removed once it appears on drywall and the only thorough solution to removal of mold is the removal of the drywall it has infested. Do not take chances with mold as it can cause long-term respiratory problems. If mold growth is severe and spread out, it may be a good idea to consult a professional for its removal. Does this Spark an idea?
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Things You'll Need
- Utility knife
- Measuring tape
- Straight edge
- Drywall screws
- Drill
- Joint compound (mud)
- Trowel or taping knife
- Sand paper
- Primer
- Paint
Instructions
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1
Cut out the section of drywall. Using a utility knife, cut out the section of the damaged drywall. Make sure that the section being removed covers at least two studs. Studs are the wooden beams behind the wall, where the drywall is attached. Cut out a larger piece even if the damaged area is smaller in order for the ends to cover two studs.
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2
Cut out a new section. Using a tape measure, measure the length and width needed to fill the gap in the wall. Cut the section out with a utility knife. Make sure that the new section fits snugly into the gap before screwing it in.
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3
Screw in the drywall. Use drywall screws to screw the new section of drywall into the middle of each stud. If there are multiple studs in between the sections, screw into those studs as well. Screw into the length of the stud.
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4
Apply mud. Spread joint compound, also known as "mud," onto the drywall using a trowel or taping knife. Apply several thin coats rather than one thick coat. Smooth out. Let the mud dry for 24 hours.
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Finish. Smooth out the mud with medium coarse sand paper. Apply primer and paint.
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Tips & Warnings
When dealing with mold, wearing a face mask and work in a well-ventilated area.
