Dark splotches on Western Cedar

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Forum topic by danoaz posted 07-03-2014 06:31 PM 774 views 0 times favorited 1 reply Add to Favorites Watch
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223 posts in 2169 days

07-03-2014 06:31 PM

Topic tags/keywords: cedar

Is anyone here familiar with the dark splotches on Western Cedar ? It almost looks like a mold. Attached are a couple of pictures on some cedar that I planed down and put 50/50 tung oil and mineral spirits. Thanks in advance.

-- "Simplicity and repose are the qualities that measure the true value of any work of art." Frank LLoyd Wright

1 reply so far

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15 posts in 1568 days

#1 posted 07-05-2014 03:24 AM

Looks like iron stains. Reactions with the tannins in the wood. The slightestbit of iron, even in the water, can leave that type of stain. I’ve had it happen to me, sanded it out, only to re-appear with repeated exposure to water.

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