Quck answer
Green mold on an outside wall can be killed by following these steps:
1. Prepare a cleaning solution by mixing equal parts of water and bleach.
2. Put on protective gloves and goggles to avoid contact with the cleaning solution.
3. Use a scrub brush or sponge to apply the cleaning solution to the affected area.
4. Scrub the mold vigorously to remove it from the wall surface.
5. Rinse the wall with clean water to remove any remaining mold and cleaning solution.
6. Allow the wall to dry thoroughly.
7. To prevent future mold growth, ensure proper ventilation and sunlight exposure to the wall.
Note: If the mold growth is extensive or persistent, it is recommended to consult a professional for assistance.
If your home’s walls are consistently damp due to rain, excessive shade, or high humidity, mold may start to appear on the outside. Green mold may indicate the presence of Cladosporium, Aspergillus, or Penicillium mold. In addition to being unsightly, mold can also damage your paint and release potentially harmful spores into the air. To get rid of green mold on your wall and eliminate these cosmetic, structural, and respiratory risks, follow these steps:
Step 1
Use a pressure washer with a fan spray to clean the wall. Make sure to cover the entire wall, not just the area where the mold is visible. This will help remove most of the mold spores from the paint and crevices. If you don’t have a pressure washer, you can use a garden hose with a sprayer attachment to rinse the wall as thoroughly as possible.
Step 2
Prepare a solution that will kill the mold. In a plastic bucket, mix one gallon of warm water with half a cup of household bleach and a quarter cup of powdered laundry detergent. Stir the mixture well and then add half a cup of trisodium phosphate, a cleaning agent that can be found in many hardware stores.
Step 3
Apply the solution to the green mold growth using a sponge. If the mold is widespread, you may want to use a garden sprayer similar to those used for herbicides or liquid fertilizers. Allow the solution to sit on the wall for 15 minutes. During this time, the bleach will sterilize the surface and kill the mold.
Step 4
Scrub the wall using a sponge. Even though the mold may be dead, there may still be some staining and residual mold growth. The trisodium phosphate and laundry detergent in the solution will help loosen any mold stains.
Step 5
Rinse the wall by spraying it down with a water hose. Allow the wall to dry completely, which may take up to 24 hours or longer depending on the climate.
