Causes and Cures for Dark Patches on Painted Timber
Posted by Peter Brady on Mon 2nd October 2006 at 06:00 AM, Filed in Decor
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CAUSES
1. Usually the result of imperfections in the timber such as knots.
2. Knots can ooze resin which stains and distorts the paintwork.
CURES
1. Remove paint by using chemical stripper or heater, then sand down knot. Use an epoxy sealant on the knot. Let it dry, sand down a little and repaint.
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I don’t think you need to use something as complicated as and “epoxy sealant”. Lightly sanding the area where the knot is bleeding through and then applying a coat or two of shellac and then repainting the area should solve the problem.
Posted by Michael Ratcliffe on Thu 13th March 2008 at 12:39 PM | #