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Hardwood Head 10-22-2012 11:57 PM

Sealing pine knots before painting
I am going to be painting some exterior knotty pine siding and want to seal the knots so they do not bleed through. I am going to use a shellac based primer to spot prime the knots, then a coat of latex stain blocker primer on the entire surface before my finish coat. Will this do the trick? Any other sugestions for sealing the knots?

joecaption 10-23-2012 12:11 AM

If you just used shellic on the knots then the shellic based primer you would save a step.

chrisn 10-23-2012 03:40 AM

Good to go:thumbsup:, despite what Mr, Joe says.
Bin is not an exterior primer, it IS OK to spot prime with

smalpierre 10-26-2012 07:40 PM

XIM 400 for exterior

chrisn 10-27-2012 03:34 AM


Originally Posted by smalpierre (Post 1038609)
XIM 400 for exterior

XIM is a fine primer but not labeled for sealing pine knots

Matthewt1970 10-27-2012 10:04 AM

Shellac is what you want for the knots but my next step would be a full coat of oil primer.

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