how to clean house exterior from mildew?

1. Mix a solution of one part bleach to three parts water.

2. Apply the solution to the affected areas.

3. Let it sit for 10-15 minutes.

4. Gently scrub with a soft-bristled brush.

5. Rinse thoroughly with water.

6. Repeat if necessary.

7. Prevent future growth by improving ventilation and sunlight exposure.