I have a new porch floor made of tongue and groove pine painted with S&W porch floor enamel....Problem: Sap keeps oozing up through and bubbling up the paint. I have scraped this area once already, cleaned off the sap with a product called "Goof-off", primed and repainted with two coats. Warmer weather has set in and its happening again in the same places!! Question: Is there a product made that I can put down to block the sap and paint over it?.
You can spot prime it, as 5slb6 recommended, but that likely won't solve the problem entirely. What's happening is that the deck is getting heated to the point where the sap is being boiled out of the lumber. I see a lot of decks in exposed sunlight with this problem. Unfortunately, it's one of those things that sometimes comes with the territory if you have southern yellow pine decking.
Thanks for replys...Can I assume that all the sap will eventually boil out of the lumber, at least in those spots ? If I use a pigmented shellac, will I be able to paint over it?
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