8
Moisture Encounter Plus
User Guide
Relative humidity and moisture content
The table below shows the approximate relationship between rel-
ative humidity and equilibrium moisture content of some woods.
(These figures are approximate values at a temperature of 70ºf,
and may vary for different species.)
Wood Flooring
a) Excess moisture in wood flooring or concrete sub-floors can
cause major problems.
b) For instance, if installed with excess moisture, the wood can
subsequently shrink leading to job failure.
c) If a wood floor (solid, laminated or engineered) is installed
above wet concrete the wood can absorb moisture emitting
from the concrete causing the wood to swell and buckle and
even cause structural damage to the building.
d) When vinyl or other impervious coverings are applied over
wet concrete, the result can be failure of the adhesive and
blistering of the surface.
Your Moisture Encounter Plus can be used to measure the
moisture content of the wood floor to ensure it meets
specification. Likewise it can be used to check, on a qualitative
basis, through the floor covering, to identify elevated moisture in
the substrate.
Relative Humidity
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Wood MC%
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 +
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