[Karen Wright]

I painted my pine furniture with water based kilz, then painted the furniture with white oil based paint and the knots are bleeding through that paint.

 

[Gymschu]

You need to prime with Cover Stain oil base from Zinsser or oil-based KILZ...............basically, you need pigmented shellac as a primer. Any water-based primer is going to draw out the tannins/oils in the wood. The shellac seals out the tannins.

 

[jsheridan]

You need to prime with Cover Stain oil base from Zinsser or oil-based KILZ...............basically, you need pigmented shellac as a primer. Any water-based primer is going to draw out the tannins/oils in the wood. The shellac seals out the tannins.

Gymschu, with all due respect, you have me confused. You're telling Karen to use two different primers. Karen, spot prime the knots with Zinsser BIN, a white pigmented shellac. Then touch up with the finish. Just out of curiosity, how long did take for the knots to burn through?

 

[chrisn]

one word, period BIN

 

[Gymschu]

Sorry about the confusion..............just be sure to use what Chris and Joe have pointed out. I have so many cans of primer laying around that I just grab what I know works........I don't always remember (I'm old) exactly.......I still get B-I-N and Kilz mixed up.......anyway a white pigmented shellac will seal out those knots and give a good surface for applying a finish coat or two......nuff said.

 

[chrisn]

Sorry about the confusion..............just be sure to use what Chris and Joe have pointed out. I have so many cans of primer laying around that I just grab what I know works........I don't always remember (I'm old) exactly.......I still get B-I-N and Kilz mixed up.......anyway a white pigmented shellac will seal out those knots and give a good surface for applying a finish coat or two......nuff said.

me too:laughing:

 

[Will22]

Shellac is the best primer for knots.

 

[chrisn]

Shellac is the best primer for knots.

really?:huh:

 

[jsheridan]

I've never used it, but the old timers, one of which I just had this discussion with the other day, claim nothing beats aluminum paint for sealing knots. Would make sense, as I'd like to see tannin burn through metal pigment. Just sayin'.

 

[Gymschu]

Joe, I once had an oldtimer tell me aluminum paint was the best primer for peeling paint areas on wood...........tried it.......paint was peeling a year later.

 

[jsheridan]

Gymschu, I've never heard that one, and don't know if I would buy that one. Did he see you coming?:laughing: Might have been some tom foolery, playing a joke on the new guy.
However, aluminum for knots is all the rage, if painting techniques could be called a "rage", in the pro forums with the old heads, of whom I think we mingle. It seems like it could be more effective, and they say the knots will never return, but why put yourself out of a job, besides, I like the quick dry/topcoat of BIN.