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Old 10-23-2012, 03:41 PM   #1
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knots


I made 3 door frames in my house useing pine wood 20 years ago, painted it several time back then and the knots bled through. Last years I painted it 4 times in Bear white latex again and damb those knots still show so how long do knots need to dry out and what can I do about sealing them after 20 years??

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Old 10-23-2012, 05:05 PM   #2
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I made 3 door frames in my house useing pine wood 20 years ago, painted it several time back then and the knots bled through. Last years I painted it 4 times in Bear white latex again and damb those knots still show so how long do knots need to dry out and what can I do about sealing them after 20 years??

Bin primer
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Old 10-23-2012, 05:43 PM   #3
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I've always had success with Zinsser
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Old 10-23-2012, 06:07 PM   #4
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Note that BIN is a shellac based primer and will have strong vapors. Be sure you have adequate ventilation and a respirator if sensitive when using it.

Shellac itself probably would have blocked stains from the knots way back when but BIN is your best bet now.

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Old 10-23-2012, 06:50 PM   #5
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And also don't forget it takes ammonia to clean your brushes and tools, or clean up spills or drips.
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Old 10-23-2012, 07:35 PM   #6
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Yup, Zinsser. Have used it for a number of problem areas, including our own cabin, which we trimmed out with local pine, plenty of knots, and the paint looks great.
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Old 10-26-2012, 07:36 PM   #7
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And also don't forget it takes ammonia to clean your brushes and tools, or clean up spills or drips.
I use denatured alcohol. It's what they say to use - it is a shellac based primer.

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