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Vinegar and bleach are effective options for removing mold from drywall. Vinegar is a better choice if you have a smaller mold issue while bleach is best if you have a larger mold problem. If the area you're cleaning has limited ventilation, using vinegar would be a better option. In that case, you could mix vinegar with baking soda to remove more stubborn mold growth.

If you suspect black mold is inside your walls, do not punch a hole in the drywall yourself to look. Call a mold inspection expert to help you. Some signs of a potential black mold infestation inside the wall include an unexplained musty, damp smell. Some people liken it to rotting vegetables. You may smell it most strongly through a wall outlet. If you and your family are experiencing constant coughing or symptoms that feel like an unexplained allergy, it could indicate black mold behind a wall.

Whether you need drywall anchors depends on your specific project, particularly where you are hanging an item. Drywall anchors are not necessary if you can drive a screw directly into a wooden stud behind the wall, as the stud provides sufficient support. However, since studs are not present everywhere in a wall, you will need to use drywall anchors if you are hanging an object in a location without a stud. For very lightweight items, picture hanging strips can also be a suitable alternative.

New plaster must be fully dry and cured before painting. The drying time for plaster ranges from 1 to 4 hours, but the curing process can take more than five days, depending on various factors, including humidity levels, temperature, the amount of plaster used, and airflow in the area. You should always apply primer before painting plaster.