Colour Fading
Causes
- Water and moisture seep through the cracks of the concrete wall and dissolve the alkali in it. The paint is caused to fade by the dissolved alkali.
- The concrete wall has high alkali component so it can cause the coating to fade.
- Fading or poor colour retention can be appeared visually as chalking. Fading occurs more quickly in exterior environments where the painted surface is exposed to high levels of sunlight. Which might be occurred on new mensory wall that moisture content and alkalinity of the walls are still high.
Solution
Step 1
Surface preparation
Nippon Paint Vinilex Wall Putty
- Scrub and clean all stains on the surface by using a plastic brush, damp cloth, or high-pressure water jet.
- If the surface has cracks with a width of less than 2 millimeters, large cracks must be repaired with Nippon Paint Vinilex Wall Putty.
- The surface must be completely clean and dry without any dust before painting.*
*After scrubbing, if the paint coating is still in good condition, you do not need to repaint.
Step 2
Primer
Nippon Paint Ultra Block Sealer
- Ultra-resistant to alkali and salt.
- Highly-resistant to moisture and can effectively maintain the top coat.
- Prevents mold and algae.
Nippon Paint Quick Sealer
- Good Alkali and efflorescence resistance.
- Good humidity resistance. Protect paint film from blistering.
- Good adhesion
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.