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Painting, Ask Danny Published 03/11/2008 by Danny Lipford

Is there a product that will cover up the knot holes in knotty pine should I decide to paint the wood a light color? - Judy
Judy,
Large knots, like those found in knotty pine, can pose a problem when painting, since the resin in them has a tendency to bleed back through the finished surface. To prevent this, spot prime any knots first with an oil based or pigmented shellac primer that is designed to prevent bleeding. If there are a lot of knots, prime the entire surface to give it a more even texture. If the boards have been varnished, lightly sand them and wipe off any dust before priming so the primer will adhere well. More information on primers is available on our website at A Homeowner’s Guide to Paint Primer.
Good luck with your project,

April 15th, 2008 at 1:34 pm
I have had good luck painting 50+ year-old knotty pine by priming with two coats of Kilz Premium water-based primer and two coats of Benjamin Moore paint. A small bedroom that was once a dark cave now has a very cottagey look.