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I painted my bathroom woke up the next morning and half the paint from the top of the window wall has dripped back of again leaving really big tear marks down the wall. I have really limited money and was advised to use PVA on the wall to seal it, then paint over that once dry to get the paint to sick. Has anyone tried this and did it work?

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So you were painting directly on a newly drywalled bathroom? I don't understand what happened. –  DMoore Feb 21 at 19:57
    
Was there any silicone caulking or anything like that you were trying to paint over? –  Steven Feb 21 at 20:08
    
Did you prime the wall first, clean the wall, remove any dust and dirt, and make sure it was completely dry? –  BMitch Feb 21 at 20:12
    
yes i sanded and sugar soaped waited till it dried and just applied white paint as the color i am putting on is lighter. no silicone or anything i just think the wall is that damp :/ i wish there was a way to put up a picture so u guys can see it –  user20039 Feb 21 at 20:34
    
no it wasn't a newly plastered wall –  user20039 Feb 21 at 20:35

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My guess would be that you didn't prime and that you tried to paint over oil paint with a latex paint or some incompatible combination of paints like that.

You should figure out what type of paint was used for the original coat and purchase a suitable primer to go on top, and then apply your new color. If you really aren't sure, someone at a paint store can recommend a primer that is suitable for a range of scenarios.

Based on the picture I would probably avoid a paint-primer combination product.

Primer is typically pretty cheap so aside from the additional labor and time, it should not add considerable costs to your project.

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