Subject: Notty Pine problem

From: Steven Cavanaugh <[email-masked]>
Date: 8 Feb 1997 13:59:25 GMT

I hope some one can help me with the following finishing problem.

Customer has a set of windows made of notty pine, they have painted them with latex 
white paint, of course in less then a year the notts have come right through as dark 
brown spots.

It is my understanding that if one has fresh wood, using shelac ( less then one year 
old) and coating the nots, this will not happen. 

With out trying to strip the latex paint, is there any way of stopping this problem.

Would a coat of varathane, followed by a oil based paint put an end to this problem by 
chance.

Any ideas would be welcome.

---

From: [email-masked]
Date: Sat, 08 Feb 1997 16:07:37 GMT

There are primer products specifically designed for such problems.
Two avail. in my area are Kiltz and BIN.  They cut with alcohol, not
paint thinner, and will seal just about anything.  I've used BIN to
seal black tar residue, and its never bled through.

---

From: Mike Glennon <[email-masked]>
Date: Sat, 08 Feb 1997 12:19:26 -0800

Howdy steve

Start stripping!!! no way around it. The shellac will work or Kilz paint 
as someone else mentioned, but pass on the varnish products since they 
will not adhere to the pitch coated and oozing knots.

Mike G. ([email-masked])
Lolo Mt.

---

From: "William M. Youngman" <[email-masked]>
Date: Mon, 10 Feb 1997 21:08:21 -0800

> Any ideas would be welcome.

Steven,  I can't give you the scientific reason, but based on my
experience, I wouldn't trust putting anything over the latex except
another latex. Latex tends to be softer than oil based paints and I
think the difference in expansion and contraction will eventually cause
the oil based product to peel and flake.  I don't know if there is a
latex product that will stop the bleed-thru.  
	Some years ago I built a pine bookcase that had a few tight knots. 
Following accepted procedure, I painted each knot with a white shellac
based primer before painting with an oil based white enamel.  The knots
still bled thru.  I know this doesn't answer your question, but maybe
will help you to know what not to do.

Bill Youngman

---

From: Jim Whisenhunt <[email-masked]>
Date: Sat, 08 Feb 1997 08:56:20 -0600

> Any ideas would be welcome.
touch up those spots with kilz. not the kilzII