Bubbling and blistering create unsightly blemishes on painted surfaces. The bubbles can be small and only in a few locations, or they can be expansive. Removing bubbles from paint can be difficult. You should prevent bubbles in the first place by planning well and using the proper materials.
Paint the room on cool, dry days. Paint that dries in the hot sun is more likely to bubble and blister. Try to paint on days that are cooler than 90 degrees Fahrenheit. Likewise, paint that becomes damp before it has finished drying thoroughly can bubble. This can happen it it rains right after the room is painted. Check your weather forecast.
Sand any rough edges on the surface using a fine sandpaper. Rough edges may be found around cracks or other blemishes that have been repaired. If you paint over latex paint, you will want to sand the entire surface so the paint sticks better.
Clean the wall thoroughly before painting. This will make sure the paint can adhere to the walls surface without interference. Use a mild soap and water solution. You can use dishwashing liquid for your soap. Rinse the wall once it has been washed and allow it to dry.
Apply a primer to the entire surface. This will ready the surface for the paint. Use an alkyd primer for oil-based paint, acrylic for latex paint and tinted shellac for surfaces that are difficult to paint, such as metal and paneling.
Paint the room after the primer dries. Paints are either oil-based or latex. You can paint a latex paint over existing oil-based paint, but do not paint an oil-based paint over latex paint as this will cause bubbling and blistering.
Use fans or a dehumidifier in moist rooms to prevent paint from peeling, particularly when you will add to the moisture by cooking or using the shower.