Can I use this over joint compound that was used to patch a plaster ceiling that was peeling? I've been told to not use PVA primers in this case.
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Thank you for taking the time to ask a question. Plaster, especially older lime-based or gypsum-based types, has a dense, smooth surface that doesn’t bond well with PVA primers. PVA is formulated to soak into porous paper-faced drywall, not solid plaster. If you have any other questions, please contact us directly at 1-877-825-7727 or info@cbgbrandreview.com. Sincerely, R.C., Digital Care Team
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