Relative Humidity
Wood MC %
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
3 to 5
5 to 6
6 to 8
8 to 9
9 to 11
11 to 13
13 to 15
16 to 19
20 to 22
25+
22
MOISTURE ENCOUNTER 5 USER GUIDE
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MATERIALS - WORKING WITH YOUR MOISTURE
ENCOUNTER ME5
WOOD AND WOOD PRODUCTS
SCALES 1 & 2
a. Acceptable levels of moisture content depend on
the climate conditions and we advise you check
the levels acceptable in your area. The table below
shows the approximate relationship between the
ambient relative humidity and equilibrium moisture
content in wood. (These figures are approximate
values at a temperature of 70º F, and may vary for
different species.)
b. As a rule of thumb and depending on the climatic
conditions:
• Exterior wood is generally considered safe for
painting when the moisture content is 14% or
below.
%MC