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Question DetailsAsked on 7/31/2012

JP
Best way to prepare an exterior porch column that's leaking pine sap?

Hey there,

Just getting around to a way overdue project: repainting my chipped and flaking front porch columns, stair rails and balustrades. I wanted to know if anyone could tell me what's the best way to prepare a wooden column that is seeping a lot of pine sap. It's a 4-by-4-inch support column, so I don't want to replace it. After removing the excess sap and doing normal prep on the wood for paint, would a basic primer like Kilz be the best way to seal and prevent the column from seeping more sap? Is there another method or product that remedies this specifically?

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- Scrape surface sap, clean area with a naptha soaked rag, scuff with 120 grit, dust and spot prime with shellac.

Zinnser makes a great product called BIN. Use shellac only as a spot primer and top-coat within 2 days as it won't hold up w/ moisture and UV rays. Clean up shellac with denatured alcohol (or any clean alcohol). It dries in 15 minutes but can be re-dissolved with alcohol forever.

All products available at local hardware or paint store. Leftover Den-alcahol usefull for cleaning up dried latex paint, naptha is an excellent surface prep solvent/de-greaser; evaporates in less than a minute with NO residue. Chemically it is nearly identical to mineral spirits but has less petroleum oil as it is distilled from same raw product but at a lower boiling temp.

Hope this helps.

Andrew
Bluewater Painting

Answered 7 years ago by Bluewater Painting




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