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Old 04-20-2008, 05:25 PM   #1
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Cleaning Painted Moulding with Sap


Our painted MDF moulding has sap seeping through the paint. Does anyone know how to clean the sap so I can seal it and repaint it?

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Old 04-20-2008, 08:13 PM   #2
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Cleaning Painted Moulding with Sap


MDF is a wood-based product, but it consists of very tiny fibers of wood adhered together, none of which are large enough to carry sap. Sap just isn't possible in MDF!

Are you sure that you don't have painted pine moulding?

What is more likely is that the MDF got sap on it from another piece of wood, if in fact what you're dealing with is actually sap.

As for removing it, your best course of action is probably to sand through the damaged paint down to bare material. Then prime, then paint.

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Old 04-21-2008, 07:37 AM   #3
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Cleaning Painted Moulding with Sap


If it truly is sap, try using some denatured alcohol to remove it. Then prime with something like Kilz before you repaint.
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