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.
- 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.
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