CHAPTER 1 - ).( 
EXPOSURE 
VARIES, 
EVEN 
WITHIN 
THE 
SAME 
NEIGHBORHOOD 
Different orientations, elevations, and site conditions 
create different aging patterns. 
Even on the same street, two buildings can experience very 
different environmental conditions. A shaded, well-ventilated 
property may retain moisture longer, while another with 
unobstructed sun and constant trade winds may experience 
more intense UV exposure and salt deposition. 
This is why a one-size-fits-all 
maintenance schedule 
does not work in Hawaii. 
FACTORS THAT CREATE DIFFERENT EXPOSURE 
e 
ORIENTATION 
e 
ELEVATION 
South and west-facing $Urface$ 
Higher elevations are cooler 
receive the most $Unlight 
and cloudier; lower elevations 
throughout the day. 
are warmer and drier. 
e 
WIND EXPOSURE 
0 
RAINFALL PATTERNS 
Trade winds influence how 
Some areas receive frequent 
quickly surfaces dry and how 
rain while others stay much 
salt is deposited inland. 
drier year-round. 
e 
VEGETATION & SHADE G 
PROXIMITY TO OCEAN 
Tree$ and landscaping trap 
Clo$er propertie$ experience 
moisture and limit airflow, 
higher salt exposure and 
ex1ending drying times. 
corrosion risk. 
e 
TEMPERATURE 
0 
BUILDING DESIGN 
Small temperature difference$ 
Eave$, overhang$, ventilation, 
affect drying rate$, material 
and drainage all influence 
movoment, and coating life. 
moisture and sun exposure. 
'' 
STEWARDSHIP INSIGHT 
Buildings are shaped by the environments 
they experience every day. 
When we understand our environment, 
we can protect our buildings for generations. 
COMMON MICROCLIMATES ON O'AHU 
LJ 
, , , 
I 
, 
' 
I , 
-0-
, 
I ' 
WINDWARD COAST 
Higher rainfall, higher humidity, 
lush vegetation. Greater potential 
for biological growth and wood 
moisture concerns~ 
LEEWARD COAST 
lower rainfall, higher sun exposure, 
faster fading and oxidation, 
higher salt deposition in coastal 
communities. 
UPLAND AREAS 
Cooler temperatures, mote cloud 
cover, and slower drying times. 
May experience wind-driven rain 
at higher elevations. 
URBAN & INLAND AREAS 
Heat island effects. limited airflow, 
and dust accumulation can 
increase surface soiling and 
coating stress. 

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