Fence mold or something else...

Old 03-07-09, 01:27 PM
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Fence mold or something else...

I had a new fence put up about a six or seven weeks ago. When it was completed I noticed all of the boards have small green patches on them. I thought it was mold, but after using a pressure washer on a couple of the boards, the green patches still remain, albeit lighter in color. Is this leaching from the chemicals used to pressure treat the lumber? I want to stain the fence, but want to make sure this is not something that needs to be taken care of before hand.


Old 03-20-09, 09:32 AM
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Why stain the fence? You have a maintenance free surface that requires no work at all. Leave it that way.
Old 04-17-09, 06:05 PM
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Did I understand this right? Pressure treated wood doesn't need to be stained or painted to protect against the elements?
Old 04-18-09, 04:02 AM
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While PT wood will last longer than untreated wood, it will last even longer if a coating is maintained on it. PT should weather and dry some before any coating should be applied. 6 months before staining is the general rule but depending on application and climate conditions some PT can be stained after a few months.

I'd suggest waiting 3-6 months and then applying the stain. It might be neccesary to clean the fence at that time. After pressure washing the fence should be plenty dry enough after a couple days of sunny or windy weather.

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