How to Remove Mildew from Your Siding
By Kevin F (Kyle, TX)
My house is largely constructed with a Hardy Plank exterior. The paint on the north side of the house was quite visible with mildew, and the neighborhood association sent me a letter about either repainting or cleaning the siding.
I had to do this a few years back and found the job quite a bit of work. I purchased a product by Zinsser named JoMax. The instructions on JoMax say to mix with Bleach and water.
I had to use a vehicle brush and a ladder and do a lot of climbing and overhead work with the brush....but the JoMaxBleach works extremely well....