Painting over oil-based paint?
Bob Dempsey
Hello!
We recently purchased a new house. The builder used oil-based high-gloss
paint on all the interior trim work. Now, we would like to paint this
trim different colors. We want to use regular semi-gloss paint that is
not oil-based. We were told that we have to prep the oil-based paint in
some way before painting over it. What do we have to do for this prep
work?
Thanks for any information!
Michel Gagnon
In article (Dans l¹article) <4uar9m$e...@hpavua.lf.hp.com>,
dem...@lf.hp.com (Bob Dempsey) wrote (écrivait) :
You could use some primer like 1-2-3 from Zinsser, then paint.
1-2-3 is a latex primer that sticks on almost any surface and helps latex
to bond evenly afterwards.
--
Michel Gagnon
mga...@total.net
Montréal (Québec, Canada)
Niel Loeb
In article <mgagnon-0708...@news.total.net>, mga...@total.net
(Michel Gagnon) wrote:
> In article (Dans ląarticle) <4uar9m$e...@hpavua.lf.hp.com>,
> dem...@lf.hp.com (Bob Dempsey) wrote (écrivait) :
>
> >We recently purchased a new house. The builder used oil-based high-gloss
> >paint on all the interior trim work. Now, we would like to paint this
> >trim different colors. We want to use regular semi-gloss paint that is
> >not oil-based. We were told that we have to prep the oil-based paint in
> >some way before painting over it. What do we have to do for this prep
> >work?
>
> You could use some primer like 1-2-3 from Zinsser, then paint.
>
> 1-2-3 is a latex primer that sticks on almost any surface and helps latex
> to bond evenly afterwards.
Does it really? I tried a similar product on my oil-based trim and even
the special primer didn't stick.
I have been told by several paint stores to do the following, and I did it
and it worked:
Simply rough up the trim with sandpaper.
--Niel
--
Turner Broadcasting Company is not Turner Broadcasting Corporation.
Alan_Browning
In article <4uar9m$e...@hpavua.lf.hp.com>, dem...@lf.hp.com says...
>
>Hello!
>
>We recently purchased a new house. The builder used oil-based high-gloss
>paint on all the interior trim work. Now, we would like to paint this
>trim different colors. We want to use regular semi-gloss paint that is
>not oil-based. We were told that we have to prep the oil-based paint in
>some way before painting over it. What do we have to do for this prep
>work?
>
How fresh is the coat that is on there now? When switching from alkyd to latex, I
would think that you would at least want to let it cure. If your trim can be
sanded easily (ranch casing and baseboard) I would do it lightly with medium
sandpaper - you only need to remove the shine, not sand to bare wood. If sanding
isn't easy you can wipe the trim with Deglosser, which is a very smelly, toxic
liquid that softens the paint so that the next coat will adhere. Since you are
changing the trim color, you will need to put on two coats. Go to the paint store
(not the Home Depot or other discount department store where the help doesn't know
sh*t from shinola) and have them select the proper primer for the job. Have them
tint it to match the top coat. If you are painting many different colors this will
be more expensive because you'll need a tinted primer for each color. You could
leave the primer white, but you'll probably need two top coats to get it looking
good, so that equals more semi-gloss and more labor - might be just as expensive.
Whatever you do, don't get a lesser quality paint to save money. Think of the
value of your labor that is going into this enterprise. The paint cost will be a
fraction of that amount. If you get a lesser quality paint you could be doing it
all over again sooner or just not like how it comes out now. Oh yeah, get good
quality nylon-poly brushes - the kind that have the little cardboard covers that
fold around them to protect and shape the bristles. Once again, a little more
money, but worth it considering the effort you are about to put in to this. Was
that too much info?
Helen N. Lovisek
In a previous article, dem...@lf.hp.com (Bob Dempsey) says:
>gov!bcm.tmc.edu!cs.utexas.edu!howland.erols.net!vixen.cso.uiuc.edu!sdd.hp.com!col.hp.com!news.dtc.hp.com!lf.hp.com!dempsey
>From: dem...@lf.hp.com (Bob Dempsey)
>Newsgroups: misc.consumers.house
>Subject: Painting over oil-based paint?
>Date: 7 Aug 1996 19:37:26 GMT
>Organization: Hewlett-Packard Little Falls Site
>Lines: 12
>Message-ID: <4uar9m$e...@hpavua.lf.hp.com>
>NNTP-Posting-Host: dempsey%@hpavla.lf.hp.com
>X-Newsreader: TIN [version 1.2 PL2]
>
>Hello!
>
>We recently purchased a new house. The builder used oil-based high-gloss
>paint on all the interior trim work. Now, we would like to paint this
>trim different colors. We want to use regular semi-gloss paint that is
>not oil-based. We were told that we have to prep the oil-based paint in
>some way before painting over it. What do we have to do for this prep
>work?
>
>Thanks for any information!
>
>
>
Ask at the hardware / paint store for a product that you paint over oil
paint when you want to switch to latex.
--
Helen Lovisek wi...@freenet.victoria.bc.ca
bh...@torfree.net
JOE_H...@lamg.com
Here at the 4-building apartment complex I manage, we use a two-step
technique when we want to paint latex paint in a room that has
previously
been painted with oil-based paint.
1. The walls, ceiling, moldings, etc. are quickly and lightly sanded
just to
roughen up the surface which improves adhesion.
2. Then we apply a coat of KILZ as a primer.
When that's thoroughly dry, the latex is applied. Even in bathrooms,
with
their exposure to steam from the shower, the latex lasts for years
without
peeling.
Good Luck, JOE
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