Question: Many homeowners are beset with mildew attacking inner and outer walls of their abodes. I am one of those. Would you please publish a list of inexpensive paint additives for water-based latex and oil-based paints and how to use them. Practical procedures for treating and painting mildewed walls by a nonprofessional.
Answer: You need to air your problems.
That is, you need better ventilation, because that's the only absolute cure I know for this unsightly fungus.
Indoors, the installation of overhead fans, adding windows to closed-in areas or leaving doors open may help eliminate the problem. But, keep in mind that you can't avoid mildew when water is standing or moisture is always present.
On outdoor walls, the cause may be improper ventilation in the foundation or attic areas of the house, trapping in the walls the moisture that manifests itself in the form of mildew on the outside.
Barry Davis, manager of Par Paint Co., 1801 W. Sunset Blvd., speaks frankly about paint additives to reduce mildew and points out that most, if not all, of these products can only add mildew resistance to the paint. Further, if the moist conditions that brought about the mildew in the first place continue to exist, the mildew will return.