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Woodworking >> General Woodworking

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JPierre



Reged: Jan 21 2008
Posts: 2
Hiding Knots in Pine
      #10168 - Mon Jan 21 2008 06:43 PM

Hi folks,

Is there a product that «Really» seals Knots in Pine that will be painted? I've used oil base primer (1 coat) and 3 coats of Latex paint, both of best quality and months later, Trace of knots started to reappear on my work! I'm desperate!

A Shellac maybe?

Any Idea? Thanks

JP Maher


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calvinAdministrator



Reged: Apr 30 2002
Posts: 2391
Loc: NW Ohio
Re: Hiding Knots in Pine [Re: JPierre]
      #10170 - Fri Jan 25 2008 03:30 PM

I see terry has advised you in the other thread.

Shellac primer is the ticket, however heat seems to even bypass that technique. I've installed new "barn siding" on top of rafters to finish porch ceilings. Seems even with an air passage above via furring, the heat from the roof is enough to cause some knots to bleed through the shellac primer.

--------------------
Remodeling Contractor just outside the Glass City

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CAGIV



Reged: Jan 02 2003
Posts: 30
Re: Hiding Knots in Pine [Re: JPierre]
      #11377 - Sun Nov 23 2008 01:53 AM

We typically will seal knots in painted pine with a 2lb cut shellac and then primer over it.

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