re: What are these spots on my stucco?

Thanks guys. I appreciate it.

AIDS

Will do. Thanks.

yea I was gonna recommend the pre-mix stuff as well, unless you are on a really tight budget then just grab a cheap bottle of bleach and mix it down to about 30% and see what that does.

If that DOES work, then after you have treated the entire area's affected, you might consider some mold resistance paint, it looks like that big seam under the window needs filled in anyway. So you would want to do that first. I know it gets costly real fast, but that is one of the big disadvantages of stucco, if you don't have it well moisture sealed it's gonna wind up becoming a huge expense anyway and when you try to sell, you will get hit with it one way or the other.

I'll just give you this as an aside, my first house was all hard coat stucco and the side facing the northeast never got enough sun to keep it dried out, so I wound up running into this kind of issue as soon as some structural cracking started, I got some all weather ceramic caulk for the crack and painted the entire side with elastomeric paint. Not something I wanted to do, since the pre-dyed stucco was a very nice cream sandstone color. Once you start painting it, matching shades becomes very tricky.

The lesson I learned?


Brick.

95% of the houses here are stucco and are fine. They are block homes though. So maybe wood is the problem.