Powdery/Chalky Surfaces
Causes
- The paint was applied when the cement was not completely cured, so the alkali in the cement destroys the paint coating. The adhesive substance deteriorates and turns the paint into dust.
- The paint coating has deteriorated with service life.
Solution
Step 1
Surface preparation
- Scrub and clean the old paint with water and a plastic brush.
- The surface must be completely clean and dry without any dust before painting.
Step 2
Primer
Nippon Paint Excel Primer
- Small molecules give excellent adhesion.
- Fix chalky and powdery surface.
Step 3
Topcoat
Nippon Paint Weatherbond
- Durable against harsh weather.
- Excellent UV reflection. Reduce substrate temperature to save energy costs.
- Excellent adhesion and durability for 15+ years.