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Posted by Steve on May 15, 2007, 11:23 pm
alt.home.repair:
> Since nobody replied I guess I'll answer your question. Definitely do
> not use a latex primer. The water based product may "soften" the
> surface of the mdf and cause it to swell slightly. Not enough to cause
> real damage, but enough to make it a little rough. An oil primer,
> "cheap" will work, will seal the surface quickly and give you a good
> bite for your favorite topcoat.
I've been building custom shelves for a couple of years from MDF, and I
always use latex Kilz. I've never had a problem. I put on one coat of
Kilz, which dries in a couple of hours. I then sand it smooth and put on
two finish coats of latex paint. Depending on the paint, I can get a
mirror finish.
There's nothing wrong with using the oil-based primers, but strong smells
are triggers for my wife's migraines, so I avoid them.
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