Cause Colors will fade slightly when exposed to intense sunlight. As the coating ages, the fading can become more noticeable. Slight fading is acceptable provided it is gradual and uniform so as not to be noticeable. Excessive chalking of the paint film will cause colors to appear lighter.
Solution When substrate is in good condition except for fading, remove dirt and chalk. Topcoat with a house paint which is color-fast. Latex topcoats have especially good resistance to color fading.
