02:01PM | 12/30/06
Member Since: 12/29/06
1 lifetime posts
I bought my home 6 years ago. I removed the wallpaper and painted the bathroom walls but the finish is terrible. Although I sanded and sanded the paint has dimples, "fish eyes" and bubbles. I suspect there was an oil paint under the wallpaper. How can you tell before painting over a surface whether the previous paint was oil? Is there a primer that can be painted over the oil so that latex can then be used? Are there any easy solutions for my walls now or do I have to sand everything off. Thanks,


05:21PM | 12/30/06
Member Since: 09/24/06
50 lifetime posts
Take some nail polish remover or buy a product called "Goof Off".

take a white rag and dab some nail polish remover or Goof Off on the rag. Swab the wall where you want to test. Rub gently.

If it comes off, and feels sticky, then it's latex. If it shines up, it's oil.

You can buy an oil primer that you use to cover up the oil paint. You can paint latex over oil primer.

If only a few spots are bubbling up, I would just sand and scrape them away and apply oil primer. Then do another coat of latex paint.

I have the same situation in my living room. Not all the paint is peeling off. Only a few spots. Chances are that if you paint over the whole mess after properly priming, the spots underneath that are not peeling now will still hold.
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