BIN primer, or some other alcohol based shellac primer is the only thing I know that will keep the knots from eventually bleeding through. I find that stained & polyed surfaces usually have at least some bleed through if you use just latex primer. My minimum recommendation is to BIN the knots and any visible sap streaks, preferably twice. Then once the knots are binned, apply Zinsser 1-2-3 as Faron suggested. If you get bleeding anywhere through the 1-2-3, Bin the whole thing before topcoating with good acrylic paint.

You are ready to apply the finish paint

been paint contracting for 33 years....I will take the old -timers anyday over a fresh-faced kid salesman at benny moore or sherwin.....YOU NEED TO ALWAYS USE AN OIL BASE PRIMER OUTSIDE. ...except for masonry......the oil base freezes the wood and makes it durable.......Yes, i like the v.o.c. laws, but there is no substitute for an oil- based primer.....for a deck I would use oil stain as a primer, not alkyd on walking areas. Its too soft......that old painter was right...good luck with your deck, and listen to us pro's and old timey painters, we've been there.

1. Yes. I have used that primer on PT decks, lasts many years as a good exterior wood primer. Flood it on and backroll it to work it into the pores completely. 2. No. Most of the painted decks we do are finished with a non-skid paint. I do not recommend this coating for residential use. It is high cost, high maintenance, and ugly to boot! Perhaps someone knows of a good solid color deck paint.