![]() ![]() Let the glue mixture dry for a couple of hours. The glue mixture may pour out of the holes, so keep damp rags handy. This step can be messy, especially if you are working on a ceiling. The idea behind using the PVA water and glue mixture is that it will make the dust and debris behind the plaster congeal so that the adhesive will adhere with the most durable bond. If the plaster cracks are very minor, I often skip this step. Fill a syringe or spray bottle with the glue mixture, and squeeze or spray it into the holes. Mix a 50/50 ratio of PVA glue and water in a small container. If your drill bit goes between the lath, use a pencil to mark that hole with an X. The masonry bit will go through the plaster and bump up against the lath. Simply incorporate the new sections into the repair. You may lose more plaster during this process, but that is normal. ![]() Using a 3/16″ masonry bit, drill holes, every 2-3 inches, approximately 1″ away from the crack on both sides and all the way around any missing chunks of plaster. I often use a shop vac and a scraper for this task.
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