07:32AM | 04/17/03
Member Since: 04/16/03
2 lifetime posts
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?.


04:32PM | 04/17/03
Member Since: 07/28/02
1356 lifetime posts
You can SPOT prime with pigmented shellac to block the sap.


05:57AM | 04/21/03
Member Since: 11/19/02
59 lifetime posts
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.


08:22PM | 04/21/03
Member Since: 04/16/03
2 lifetime posts
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?


01:13AM | 04/22/03
Member Since: 07/28/02
1356 lifetime posts
Yes you can paint over the pigmented shellac.


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