I’m replacing some sheet rock in a bathroom. My trouble is while painting, the old sheet rock is bubbling up and the new paint will not stick. I’ve washed that walls down and it still does this. The new sheet rock accepts the paint fine but the older bubbles. What would be causing this? How can I fix this?
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One Response
Most likely there is some kind of surface contamination on the old sheet rock. Use either an oil base primer or shellac primer to seal it. This should stop the bubbling.