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Old 05-10-2009, 05:46 AM   #1
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Minor catastrophy


First off I'm a plumber and metal worker, though over the years I've done a fair bit of plaster work out of necessity (or by defualt). I seem to have a small talent for stright walls.
Doing new wall paper and paint (as a favor), some plaster repairs on a 55 year old house (for my daughter), likely built with hundred year old knowhow. The house is an early type of cinder block construction, plaster inside and out.
The inside walls have been patched with a variety of materials (over the decades). Patched again with drywall joint compound (by me), the girls got a little crazy taking the old wallpaper off (looks like they used an ax). I've found the drywall joint compound easy to work with for small repairs, sticks well and up until this last time, never had any trouble with it at all, for small patches and feathering.
The girls (my daughter and her friends) insisted on painting over the plaster and repairs with some sort of textured paint (I suggested paintable wall paper first then the paint). Some of my plaster repairs lifted, some from the last renovation. some from the renovation before that and some from the original plaster. A bummer but not something that can't be fixed.
I'd like to avoid removing all of the plaster, mainly because they are already living in the house and the mess will be extensive.
I've removed most all of the loose stuff, plan on using a soak in type of sealer/stabilizer and then a coat of adhesive (enhancer) just before I re-plaster with a gypsum based plaster (for the larger patches). Not my first choice, but something I've had reasonable results with in the past. Then plan on going back to the joint compound to feather the edges and small repairs.
The outside of the house is plastered with a heavily textured plaster, with the texture running horizontally. Not something I'd do, it looks like a giant water trap. I imagine the walls stay moist, most of the year.
Sorry about the book, but the construction isn't something you's see every day and I'd hate to waste another 3-4 days of work.

Any input would be welcomed. I can take some pictures if it would help. Mainly what I'm looking for is a hint I'm on the right track and maybe a little shove to get me back in the fray. I'm not in panic mode yet.

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Old 05-10-2009, 09:10 AM   #2
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Minor catastrophy


Not really positive on what exactly your asking and yes pics always help. From what I understand you took the wall paper down and now need to do some repairs and then you want to texture and paint? If that is the case you will need to use a primer to seal in any glue residue that may be left from the paper, not positive on the name right now but someone else will let you know. And then do your patching or skim coat the whole thing. As for texture you don't really say what kind you want. A fairly easy one to do is a knockdown. You can spray watered down joint compound on with a hopper you can get from a box store for around 75 bucks and then use a drywall knife to knock it down. And then paint.

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Old 05-10-2009, 09:46 AM   #3
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Minor catastrophy


I guess a bite of a language problem, English as a second language. In a nutshell the old wallpaper was pulled off, some plaster came with it. Not the first time, as there was evidence of prior plaster repairs. I patched the holes with drywall mud and smoothed out some of the prior repairs. I probably should have washed the walls, to remove some of the old wallpaper glue. my bad.
The girls painted the wall (directly) with some sort of textured paint, looks like it has wood chips mixed in. The paint blistered and peeled, some of my repairs came loose, some of the prior repairs came loose, some of the original plaster came loose. I've never seen anything like it.
After knocking off all of the loose stuff, we start all over again. My plan is to use a deep sealer let it dry and then a coat of primer adhesion enhancer before attempting the new repairs. I always thought drywall mud was bullet (idiot) proof, but after this I'm a little skeptical of using it again and plan on using a fine gypsum plaster
Once a mistake, twice a fool, three times an idiot. I don't want to hit the idiot stage if at all possible.
I also plan on wallpapering again and then painting. Thinking if there are any loose spots we missed the wallpaper will help hold everything together.
Mostly I have a confidence problem and need a little input to put me on the right track. If it was my house I'd remove all the plaster and start over again.
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Old 05-10-2009, 10:04 AM   #4
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Minor catastrophy


I'm not a pro painter but I did just remove wall paper from my bathroom and texture and paint it after getting some advice on this forum. It sounds like the proper prep wasn't done.

Here is a quote from a painter on this site from when I asked about painting after wall paper- If there is any paste residue whatsoever, use a specialty primer first (alkyd or Zinsser's Gardz or similar)
A regular acrylic/latex/waterbased will activate any paste and you'll have failure of one type or degree or another.

As far as the drywall coming out, did you use the premixed stuff in a bucket? How big of an area did you fill in with joint compound?

Sounds like the paint your daughter put on is activating some left over glue residue and bubbling up. Not sure what the best thing to do now would be but I wouldn't think putting wallpaper up to hold everything together would be the best solution for your daughter for long term. I would think you will eventually have some more failures of the paint and then you will have to deal with another layer of wallpaper and paint to fix any future failures form the joint compound/glue residue.

Hopefully someone else will chime in with some more experience and help you out.
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Old 05-10-2009, 03:02 PM   #5
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Minor catastrophy


Here is some good reading:

http://www.plaster-wall-ceiling-solu...questions.html Be safe, G
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Old 05-10-2009, 09:20 PM   #6
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Quote:
Originally Posted by GBAR in WA View Post
Here is some good reading:

http://www.plaster-wall-ceiling-solu...questions.html Be safe, G
Thanks for the link, pretty much the direction I was headed, nice to know I wasn't completely charging off in a wrong direction.
My problems are likely a series of mistakes. Maybe the wall was too wet, residual from the wallpaper removal. I failed to dust completely (again), before adding coats of drywall mud (I did wire brush the wall). I didn't use a bonding agent, because I'd never had any trouble with drywall mud bonding in the past. I typically, scrub down a wall (with a scrub brush) and sponge dry when it is heavy with wallpaper paste. then use a deep sealer. I skipped that step this time, because time was short and the existing plaster seemed solid, not excessively porous or appear to have excessive wallpaper paste on it (it wasn't slimy feeling when it was wet). I cut a few too many corners trying to rush the job, now I have it to do all over again.
I also failed to read the destructions for the paint, it recommended a primer coat.
I doubt I'll skip any steps this time around.

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