How Do I Treat Mold With Kilz?

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It is necessary to kill the mold spores before applying Kilz to the affected area. Diluted chlorine bleach can effectively kill mold spores. After the mold has been treated with bleach, Kilz can be applied to help prevent future mold infestations and to cover stains left by mold. The process of killing and covering mold may require several days.

  1. Eliminate the cause of the mold

    Water leaks and condensation are common causes of mold. These issues should be remedied by making the necessary repairs before treating the mold, and rotted wood or drywall should be replaced as needed.

  2. Clean the area with bleach

    Mix 1/2 cup of bleach with a quart of water, and clean the area thoroughly with the mixture to kill any mold spores. Allow the mixture to remain on the wall until it dries to ensure mold spores in the area are eliminated.

  3. Apply the Kilz

    Paint the area with Kilz according to the directions on the packaging. Allow the primer to dry, and check the affected area to determine whether the stains have been covered. If necessary, apply a second layer of Kilz to the affected area, and then apply mold-resistant latex paint over the primer if desired.