Paint Blistering: What It Is & How to Solve It Paint Problem: Blistering Blistering refers to dome shaped paint bubbles indicating loss of adhesion. It can occur in isolation or in groups. Blistering is typically caused by: Trapped moisture trying to escape through the paint. Painting at temperatures above 32 degrees. Using oil paints on wet/damp surfaces. High humidity, such as rain or heavy dew before the paint dries. Painting a warm surface in direct sunlight. Application over heavy chalk. Blistering Solution Find and remove the sources of moisture. Control moisture with adequate venting Stopping leaks and acrylic caulking Remove all blistered areas and other loose paint by scraping and sanding Power washing reccommended for large areas. Primers & Exterior Finishes Priming is essential for better adhesion, sheen uniformity, mildew control and durability. Select a top quality exterior paint in the colour and sheen of your choice. Have a paint problem and need answers? Sound off in the comment section below or contact us for more information Orlaith Hurley2017-09-21T09:18:00+01:00 Share This Story, Choose Your Platform! FacebookTwitterLinkedInRedditTumblrVkEmail 4 Comments pat murphy 20th September 2017 at 8:47 am - Reply Whats a good primer to use? Orlaith @ Pat McDonnell Paints 26th September 2017 at 9:34 am - Reply Hi Pat! We would recommend Zinsser 123 Primer – it’s the best and available in each of our seven stores! Konrad Jay 26th September 2017 at 4:44 pm - Reply Will def be using these tips thanks Orlaith and co, next blog should be about other problems handy to know cheers Orlaith @ Pat McDonnell Paints 27th September 2017 at 8:45 am - Reply Thanks Konrad, we will be updating the blog with more painting tips soon! Leave A Comment Cancel replyComment Save my name, email, and website in this browser for the next time I comment.