This appears to me that your log home was washed but not rinsed properly. They are only dirty drip stains as it shows on the soffit as well.
"Yay for no growths! You can likely remove those spots with a little bit of mineral spirits applied right there. It should dissolve the surfactant. That said, it could leave spots if the underlying wood had yellowed over time. Do a quick test to see…"
"Thanks so much for getting back to me. Just returned back home from vacation and felt the spots. They are soft and rubbery feeling. I'm guessing then it's surfactant leaching that has been stained over. Feel relieved that is not some type…"
This was new to me so I ran it by our R&D team. A couple possibilities they came up with:
1) It could be surfactant/dispersant leaching. (Both are materials found in stain.) Could have happened if it was applied in a humid…"
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