https://forum.deckstainhelp.com/deck-stain-questions-and-answers/new-cedar-deck-tannin-bleed/ Deck Stain Help Forum Discussion Board en-US Sat, 14 Mar 2026 17:44:40 +0000 wpForo 60 https://forum.deckstainhelp.com/deck-stain-questions-and-answers/new-cedar-deck-tannin-bleed/#post-14913 Wed, 16 Oct 2024 17:08:26 +0000 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

1810 Looks like mold. Wait until spring, prep, and stain. It will come off.

 

]]> Deck Stain Questions and Answers Scott Paul ~ Restoring Wood & Decks Since 1993 https://forum.deckstainhelp.com/deck-stain-questions-and-answers/new-cedar-deck-tannin-bleed/#post-14913 https://forum.deckstainhelp.com/deck-stain-questions-and-answers/new-cedar-deck-tannin-bleed/#post-14912 Wed, 16 Oct 2024 16:53:01 +0000 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

1810]]> Deck Stain Questions and Answers jclaclair https://forum.deckstainhelp.com/deck-stain-questions-and-answers/new-cedar-deck-tannin-bleed/#post-14912