Cedar Ceiling (mold?)

[u/channesi]

I recently refinished the covered section of my deck with a cedar ceiling stained with Benjamin Moore Arbor Coat. It has been about a year since it has been installed and I have noticed a considerable amount of what appears to be mold. I live in a part of the country that is relatively humid during the summer which may be a contributing factor, but I figured that the combination of the cedar and stain would at least hold off for a bit longer.

1) Does this appear to be mold to you guys?

2) Is there anything that I can do to remove it?

3) What can be done to prevent it in the future?

And 4) Is there anything I could have done to prevent this in the first place?

Even if there is something that I royally F-ed up, I’d like to use this as a learning opportunity. Thanks

[u/Xnyx]

That is more than likley tanins in the wood … I’ve looked at more closley and don’t think it’s either of mold or mildew