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Old Plaster Ceiling won't hold Paint after Refinishing

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Old Plaster Ceiling won't hold Paint after Refinishing Deano 12-16-2006
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Posted by Deano on December 16, 2006, 8:16 am


Hi, we have an old plaster ceiling in the kitchen in one of my rental
houses. At some point, it had been covered over with lath and ceiling
tile, which has been removed. Once corner had some old water damage
from an upstairs bathroom. I used joint compound over all the holes
and did a lot of sanding...then used Kilz for primer as well as a
glossy ceiling paint. Not four months later, the ceiling is
peeling...apparently the joint compound is peeling away from the
original plaster finish.
Any advice will be appreciated, thanks

Dean in Cincinnati
dherbert53@aol.com


Posted by Doug Miller on December 16, 2006, 9:10 am


>Hi, we have an old plaster ceiling in the kitchen in one of my rental
>houses. At some point, it had been covered over with lath and ceiling
>tile, which has been removed. Once corner had some old water damage
>from an upstairs bathroom. I used joint compound over all the holes
>and did a lot of sanding...then used Kilz for primer as well as a
>glossy ceiling paint. Not four months later, the ceiling is
>peeling...apparently the joint compound is peeling away from the
>original plaster finish.
>Any advice will be appreciated, thanks

Had the original plaster been painted? Most houses that are old enough to have
plaster walls and ceilings are old enough that the paint used on them is
almost certainly oil-based -- and joint compound won't stick to that too well.

And was the original plaster clean? Joint compound doesn't stick to dirt too
well, either.

For that matter, are you sure that the water damage is in fact old, and not
ongoing? If that corner is still getting wet, *nothing* is going to stick
there very long.

To repair it, you're certainly going to have to remove the peeling joint
compound. What you do after that depends on why it's peeling. If the existing
plaster is simply dirty, washing it should be enough. But if it's been
painted, you may need to remove the whitecoat layer and apply joint compound
directly to the browncoat.

Either way, I'd use the "setting type" joint compound, not the premixed stuff.
(It'll stick better.) Get the sandable kind, like this:
http://www.hardwareandtools.com/invt/6272157
(Get it at a brick-and-mortar hardware store, or a place like Home Depot or
Lowe's, though, not from these guys. Their price is pretty far out there.)

And if you discover *new* water damage, obviously you need to find and fix the
cause of that before attempting any repairs.

--
Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.

Posted by on December 16, 2006, 9:57 am



>Hi, we have an old plaster ceiling in the kitchen in one of my
rental
>houses. At some point, it had been covered over with lath and
ceiling
>tile, which has been removed. Once corner had some old water damage
>from an upstairs bathroom. I used joint compound over all the holes
>and did a lot of sanding...then used Kilz for primer as well as a
>glossy ceiling paint. Not four months later, the ceiling is
>peeling...apparently the joint compound is peeling away from the
>original plaster finish.
>Any advice will be appreciated, thanks
>
>Dean in Cincinnati
>dherbert53@aol.com


Hi Dean,

I agree with all of Doug's comments. I would like to add that we
normally prime the plaster surface before we patch. I like the
Zinsser oil base (it will adhere to anything used before it). The
primer also seals the surface and allow for a better patch. The only
other reason that the patch would peal off is if you still have a
moisture problem or that you still had moisture in the brown coat.
Brown coats can hold moisture for months. Any patch over the brown
coat in this form will also result in the problem that you listed
above.

-Lee


Posted by yourname on December 16, 2006, 12:19 pm


look up calcimine





flb51notthis@comcast.net wrote:
>
>
>>Hi, we have an old plaster ceiling in the kitchen in one of my
>
> rental
>
>>houses. At some point, it had been covered over with lath and
>
> ceiling
>
>>tile, which has been removed. Once corner had some old water damage
>
>>from an upstairs bathroom. I used joint compound over all the holes
>
>>and did a lot of sanding...then used Kilz for primer as well as a
>>glossy ceiling paint. Not four months later, the ceiling is
>>peeling...apparently the joint compound is peeling away from the
>>original plaster finish.
>>Any advice will be appreciated, thanks
>>
>>Dean in Cincinnati
>>dherbert53@aol.com
>
>
>
> Hi Dean,
>
> I agree with all of Doug's comments. I would like to add that we
> normally prime the plaster surface before we patch. I like the
> Zinsser oil base (it will adhere to anything used before it). The
> primer also seals the surface and allow for a better patch. The only
> other reason that the patch would peal off is if you still have a
> moisture problem or that you still had moisture in the brown coat.
> Brown coats can hold moisture for months. Any patch over the brown
> coat in this form will also result in the problem that you listed
> above.
>
> -Lee
>

Posted by DK on December 16, 2006, 3:12 pm



>Hi, we have an old plaster ceiling in the kitchen in one of my rental
>houses. At some point, it had been covered over with lath and ceiling
>tile, which has been removed. Once corner had some old water damage
>from an upstairs bathroom. I used joint compound over all the holes
>and did a lot of sanding...then used Kilz for primer as well as a
>glossy ceiling paint. Not four months later, the ceiling is
>peeling...apparently the joint compound is peeling away from the
>original plaster finish.
>Any advice will be appreciated, thanks
>
>Dean in Cincinnati
>dherbert53@aol.com

What you have is thick layer of cooking grease on the plaster. You
have to degrease.


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