"Dave In Houston" wrote:


"efgh" wrote in message
news:ZFHTi.47565$%B2.3334@edtnps82...

My method once sanding is complete is to put the shellac on the knots,
sand lightly with 220 grit, then apply latex primer, sand again lightly
with 220 grit, then apply latex paint.

Is this an interior or exterior application?
In either instance I would start by switching to an alkyd primer over
the shellac.
If it's an interior application I always use an alkyd enamel.

While I know that the OP has rejected it, for reasons that may be
right for him, I'd strongly second this suggestion. While I agree that
an alkyd enamel provides better leveling and harder/more attractive
surface, if the OP still wants to use latex as a top coat, I'd still
recommend the oil-base primer. At the very least, buy an aerosol can
of Kilz or BIN oil-based primer and spray just the knots before
brushing on your latex primer. I can't imagine a knot bleeding through
shellac + oil-based primer + latex primer + latex topcoat!
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