Before painting, try to determine why peeling has occurred, is it due to leaks, damp, or poor ventilation? Addressing the root cause is crucial to prevent future peeling.

Step 1 - Use a scraper to remove any loose, flaking, and poorly adhered paint, and rake out any cracks. Feather any paint edges with a fine grade sandpaper to make smooth. If the whole ceiling is affected then scrape all back to bare plaster.

Step 2 - If old (well adhered) paint remains, using a paint brush or roller, apply one full coat of Zinsser Peel Stop to stripped areas, paying close attention to paint edges. Allow to dry fully.

Step 3 - Make any necessary repairs. Fill any cracks and small surface defects with a suitable plaster filler. Where the old paint has been stripped back to bare plaster in patches, a fine surface filler can be used to even the surface before painting, allow all fillers to dry fully, before sanding smooth and removing any surface dust with a damp cloth.

Step 4 - Once the surface has been fully prepared, prime with one full coat of adhesion primer such as Zinsser Bullseye 123 or Benjamin Moore Stix to seal the area and help prevent future peeling. If applying to bare plaster, you may need to thin the primer by up to 20% with clean water. Follow instructions on the tin.

Step 5 - Apply two full coats of a high quality or moisture-resistant ceiling paint in kitchens and bathrooms, allowing adequate drying time between coats. Follow the paint manufacturers instructions for application.

Additional Tips:

Ventilation - Improve ventilation in the affected area to reduce moisture build up. Use extractor fans in bathrooms and kitchens.

Professional help - If you are unsure about the painting process, consider hiring a professional decorator. They have the experience and tools to handle the job effectively.

Important considerations:

Ventilation - Ensure proper ventilation during the cleaning and painting process.