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Homeowner Forum / Construction / June 2005



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Coat outdoor particle board?

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Doggus - 28 Jun 2005 14:09 GMT
Rebuilt the door on my barn and now want to paint it the traditional
red with white trim.  I based the door out of particle board.  If I
prime the door and paint it I can still see the particle board pattern
under the paint.  What can I use to 'float' the door so I can get a
smooth paint job outdoors?  I'm assuming it's NOT OK to use joint
compound or spackling (for use on indoor drywall) out of doors where
the weather can possible get to it.

Any Ideas?
butch burton - 28 Jun 2005 14:42 GMT
Don't use standard particle board on an outdoor application - there is
a grade used for out door signs that is weather resistant - use that
and it is smooth as well.  Don't think you will be able to keep regular
particle board from falling apart even if you paint it all over.
forgot the name of the stuff but somebody here will know the name.
RicodJour - 28 Jun 2005 15:47 GMT
> Rebuilt the door on my barn and now want to paint it the traditional
> red with white trim.  I based the door out of particle board.  If I
[quoted text clipped - 3 lines]
> compound or spackling (for use on indoor drywall) out of doors where
> the weather can possible get to it.

Unless you got something specifically meant for exterior exposure, you
can expect that door to swell at the edges and start falling apart.
Particle board does not deal with moisture at all well.

Since you've already built the door, it's damage control time.  Seal
the endgrain with epoxy (thin stuff, not the clay-like stuff).  Then
paint the crap out of it.  Pay particular attention to the cut edges
and especially the bottom edge.  Once the door is in place you won't
know if that edge is giving up the ghost until you start seeing the
swelling at the bottom.

There are spackles that are meant for exterior work - an of those will
do the job.  You will want to prime the door first, then spackle and
lightly sand, then spot prime the spackle prior to top coating.

R
m Ransley - 28 Jun 2005 19:05 GMT
Particle board for an exterior door! thats funny, no way is it worth
waisting you time to get it smooth, when it rains or over winter and
spring it will swell and pop off anything you use. Paint it, when the
glue fails and its all soft redo it right with real wood.
steveki - 29 Jun 2005 02:09 GMT
If you so decide to re-do the door.  You should use double sided MDO (medium
density overlay) plywood.  It is smooth and handles the weather well.  You
will find this at good lumber yards.  Be sure you get the double sided, they
make single sided which is not applicable for a door.

> Particle board for an exterior door! thats funny, no way is it worth
> waisting you time to get it smooth, when it rains or over winter and
> spring it will swell and pop off anything you use. Paint it, when the
> glue fails and its all soft redo it right with real wood.
Doggus - 29 Jun 2005 03:45 GMT
Humm...the reason I used particle board was, the old door was made out
of the same crap.  Lasted many years for me, don't know how long the
previous owner had it on there.  The mini-donkies finally ripped it off
the hinges and it was wearing really bad at the bottom where it was
rubbing the base board.  Oh well, I'll fix it right next time.
 
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