How to clean mold from a stained and sealed deck?
We have a fairly new deck, treated pine. Waited 6 months before having it stained and sealed which was this last spring. The contractor cleaned the deck with a non bleach brightener and used Sherwin Williams Superdeck, oil-based semi-transparent stain. In the last 6 weeks we have had a lot of rain and sticky aphid droppings from the above trees. Now we have lots of mold and a sticky deck. I lightly power washed it a couple of weeks ago, and it looked good that day. The next day the stickiness was back and with more rain, now it's even worse. I think I'm going to have to hire someone since I am a female and not sure I can handle the job. It's a very large deck and I just am not sure what to use and wondering if it needs to be cleaned and re-sealed? I've read that OxiClean is good to use diluted with a stiff deck brush. Any advice would be appreciated . . . .
You need to remove the SD and that requires stripping and brightening the wood. A cleaner will not work. Use the Restore A Deck Stripper/Brightener kits.
BTW, SD has an issue with this. Switch to a better brand when done: https://www.deckstainhelp.com/the-5-best-deck-stain-reviews-and-ratings/