We are remodeling an older home and th ekitchen cabinet paint is peeling in large sections. It appears the previous owners may have painted latex over enamel and now there are large bubbles wherfe whole sections of paint can be pulled off. Other areas where it is not peeling and adheres well. What's the best way to prepare the cabinets for new paint?
It sounds more like the current top coat is not bonded to the previous coat. Sanding is the most neglected, and most important, step in the prep phase. What are they peeling down to, another coat of paint or original surface? Ideally, you want to get the whole surface down to the same level uniformly, which means stripping the remaining paint. It should scrape off fairly easily with a thin spackle blade that will get underneath it, carefully. A heat gun, used carefully, would likely take the remaining stubborn top coat off without disturbing the previous coat. Sanding it will cause the latex edges to keep lifting. If you disturb the previous coats you'll have to take it down completely or get involved in patching. You don't want patches on kitchen cabinets. Once it's level, give the surface a good sanding with 150 grit, wash them with water and tri-sodium phosphate, rinse, apply a good bonding primer, then apply the finish of your choice. BTW, an enamel can be latex or oil. Good Luck.