Staining appeared as installation was being completed, after an overnight rain. My research suggests this is tannin bleeding. Do I have a problem with the boards? Winter is coming in Illinois, and the deck gets direct sun most of the day. Should I be in a rush to address/seal or wait until spring? I intend to use a semi-transparent stain. In any case, what process should I use in terms of washing and sanding? Thank you
Staining appeared as installation was being completed, after an overnight rain. My research suggests this is tannin bleeding. Do I have a problem with the boards? Winter is coming in Illinois, and the deck gets direct sun most of the day. Should I be in a rush to address/seal or wait until spring? I intend to use a semi-transparent stain. In any case, what process should I use in terms of washing and sanding? Thank you
Looks like mold. Wait until spring, prep, and stain. It will come off.
