CHAPTER 2 - )( ---
HOW 
EXTERIOR 
COATINGS 
ACTUALLY 
FAIL 
Understanding the Science Behind 
Weathering, Aging, and 
Protective Performance 
A 
KEY TAKEAWAYS 
v 
After reading this chapter, you will understand: 
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Why exterior coatings are much more 
than decorative finishes. 
How modern coating systems protect 
the materials beneath them. 
Why all coatings eventually 
weather and deteriorate. 
The environmental processes that 
contribute to coating failure in Hawaii. 
How recognizing early signs of deterioration 
can help extend the life of a building's exterior. 

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