The results of this cleaning method can last anywhere from six months to a year, depending on the climate and the specific conditions around your home. In areas with high humidity or lots of shade, you might find algae returning sooner.
It’s a good idea to inspect your siding periodically and repeat this cleaning process as needed. Regular maintenance will help keep your home looking its best and prevent the algae from taking hold again.

10. Easy Preventive Habits To Keep Algae From Coming Back

To prevent algae from returning, consider a few simple maintenance habits. Trim back any trees or bushes that are creating excess shade and preventing sunlight from reaching your siding. Ensure your gutters and downspouts are functioning properly to direct water away from your home.
Regularly clean your siding with a mild detergent and water to remove any dirt or organic material that could feed algae growth. These preventive measures can significantly reduce the frequency with which you need to employ the vinegar solution.

11. When This Hack Isn’t Enough And What To Try Next