Venetian Plaster is cracking and bubbling

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Old 12-11-06, 09:14 AM
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Venetian Plaster is cracking and bubbling

We used an oil based primer. Parts of the wall look fine and other parts the plaster has small bubbles or looks like crackling. What is wrong?
 
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Old 12-11-06, 10:25 AM
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need more info!

what brand or formula of venetian plaster did you use? or did you just use joint compound? how did you apply it (how thick). how many layers? etc....
 
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Old 12-11-06, 10:39 AM
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We used American Tradition Signature VP. We noticed it after the first coat on a practice board dried. We were on the second coat application when we started seeing it on the wall as well as it dried.
 
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Old 12-11-06, 10:59 AM
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and the directions say to use an oil based primer?
 
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Old 12-11-06, 11:03 AM
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No, but the product is acrylic so it should be compatible. This is a bathroom. I think maybe it was too thick. We are going to sand down those spots and reapply.
 
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Old 12-16-06, 03:08 PM
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acrylic is water based. WHat primer did you use? I'm with Annette, how thickly did you apply each layer?
 
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Old 12-18-06, 01:08 PM
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I've had good results with American Signature VP, but only after some trial and error. I'm guessing you applied too thick, which isn't hard to do considering the consistency of bad pudding. Sand the cracked parts and skim coat over, a couple of times should do it. then burnish.
 
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Old 12-26-06, 03:44 PM
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I agree, i think you just applied it too thickly in those areas. VP should always be applied in several thin coats.
 
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